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CIVIL ENGINEERING (219 journals)                  1 2 | Last

Showing 1 - 200 of 219 Journals sorted alphabetically
ACI Structural Journal     Full-text available via subscription   (Followers: 20)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 3)
Acta Structilia : Journal for the Physical and Development Sciences     Open Access   (Followers: 3)
Advances in Civil Engineering     Open Access   (Followers: 43)
Advances in Structural Engineering     Full-text available via subscription   (Followers: 34)
Agregat     Open Access   (Followers: 1)
Ambiente Construído     Open Access   (Followers: 1)
American Journal of Civil Engineering and Architecture     Open Access   (Followers: 36)
Architectural Engineering     Open Access   (Followers: 5)
Architecture and Engineering     Open Access  
Architecture, Civil Engineering, Environment     Open Access   (Followers: 1)
Archives of Civil and Mechanical Engineering     Full-text available via subscription   (Followers: 3)
Archives of Civil Engineering     Open Access   (Followers: 13)
Archives of Hydro-Engineering and Environmental Mechanics     Open Access   (Followers: 2)
ATBU Journal of Environmental Technology     Open Access   (Followers: 4)
Australian Journal of Structural Engineering     Full-text available via subscription   (Followers: 7)
Baltic Journal of Road and Bridge Engineering     Open Access   (Followers: 1)
BER : Building and Construction : Full Survey     Full-text available via subscription   (Followers: 10)
BER : Building Contractors' Survey     Full-text available via subscription   (Followers: 2)
BER : Building Sub-Contractors' Survey     Full-text available via subscription   (Followers: 2)
BER : Survey of Business Conditions in Building and Construction : An Executive Summary     Full-text available via subscription   (Followers: 3)
Berkeley Planning Journal     Open Access   (Followers: 6)
Bioinspired Materials     Open Access   (Followers: 5)
Bridge Structures : Assessment, Design and Construction     Hybrid Journal   (Followers: 14)
Building & Management     Open Access   (Followers: 2)
Building and Environment     Hybrid Journal   (Followers: 16)
Building Women     Full-text available via subscription  
Built Environment Project and Asset Management     Hybrid Journal   (Followers: 15)
Bulletin of Pridniprovsk State Academy of Civil Engineering and Architecture     Open Access   (Followers: 6)
Canadian Journal of Civil Engineering     Hybrid Journal   (Followers: 14)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 6)
Case Studies in Nondestructive Testing and Evaluation     Open Access   (Followers: 11)
Case Studies in Structural Engineering     Open Access   (Followers: 10)
Cement and Concrete Composites     Hybrid Journal   (Followers: 20)
Challenge Journal of Concrete Research Letters     Open Access   (Followers: 3)
Challenge Journal of Structural Mechanics     Open Access   (Followers: 5)
Change Over Time     Full-text available via subscription   (Followers: 2)
Civil and Environmental Engineering     Open Access   (Followers: 8)
Civil and Environmental Engineering Reports     Open Access   (Followers: 8)
Civil and Environmental Research     Open Access   (Followers: 19)
Civil Engineering = Siviele Ingenieurswese     Full-text available via subscription   (Followers: 4)
Civil Engineering and Architecture     Open Access   (Followers: 24)
Civil Engineering and Environmental Systems     Hybrid Journal   (Followers: 3)
Civil Engineering and Technology     Open Access   (Followers: 13)
Civil Engineering Dimension     Open Access   (Followers: 12)
Civil Engineering Infrastructures Journal     Open Access   (Followers: 1)
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Composite Structures     Hybrid Journal   (Followers: 291)
Computer-aided Civil and Infrastructure Engineering     Hybrid Journal   (Followers: 11)
Computers & Structures     Hybrid Journal   (Followers: 37)
Concrete Research Letters     Open Access   (Followers: 7)
Construction Economics and Building     Open Access   (Followers: 4)
Construction Engineering     Open Access   (Followers: 11)
Construction Management and Economics     Hybrid Journal   (Followers: 21)
Constructive Approximation     Hybrid Journal  
Construindo     Open Access  
Curved and Layered Structures     Open Access   (Followers: 3)
DFI Journal : The Journal of the Deep Foundations Institute     Hybrid Journal   (Followers: 1)
Earthquake Engineering and Structural Dynamics     Hybrid Journal   (Followers: 17)
Enfoque UTE     Open Access   (Followers: 4)
Engineering Project Organization Journal     Hybrid Journal   (Followers: 7)
Engineering Structures     Hybrid Journal   (Followers: 13)
Engineering Structures and Technologies     Open Access   (Followers: 3)
Engineering, Construction and Architectural Management     Hybrid Journal   (Followers: 10)
Environmental Geotechnics     Hybrid Journal   (Followers: 5)
European Journal of Environmental and Civil Engineering     Hybrid Journal   (Followers: 10)
Fatigue & Fracture of Engineering Materials and Structures     Hybrid Journal   (Followers: 19)
Frontiers in Built Environment     Open Access   (Followers: 1)
Frontiers of Structural and Civil Engineering     Hybrid Journal   (Followers: 6)
Gaceta Técnica     Open Access  
Geomaterials     Open Access   (Followers: 3)
Geosystem Engineering     Hybrid Journal   (Followers: 2)
Geotechnik     Hybrid Journal   (Followers: 4)
Géotechnique Letters     Hybrid Journal   (Followers: 8)
GISAP : Technical Sciences, Construction and Architecture     Open Access  
HBRC Journal     Open Access   (Followers: 2)
Hormigón y Acero     Full-text available via subscription  
HVAC&R Research     Hybrid Journal  
Indonesian Journal of Urban and Environmental Technology     Open Access  
Indoor and Built Environment     Hybrid Journal   (Followers: 3)
Infrastructure Asset Management     Hybrid Journal   (Followers: 3)
Infrastructures     Open Access  
Ingenio Magno     Open Access   (Followers: 1)
Insight - Non-Destructive Testing and Condition Monitoring     Full-text available via subscription   (Followers: 36)
International Journal for Service Learning in Engineering     Open Access  
International Journal of 3-D Information Modeling     Full-text available via subscription   (Followers: 3)
International Journal of Advanced Structural Engineering     Open Access   (Followers: 17)
International Journal of Civil, Mechanical and Energy Science     Open Access   (Followers: 2)
International Journal of Concrete Structures and Materials     Open Access   (Followers: 15)
International Journal of Condition Monitoring     Full-text available via subscription   (Followers: 2)
International Journal of Construction Engineering and Management     Open Access   (Followers: 10)
International Journal of Engineering and Geosciences     Open Access  
International Journal of Geo-Engineering     Open Access   (Followers: 3)
International Journal of Geosynthetics and Ground Engineering     Full-text available via subscription   (Followers: 4)
International Journal of Masonry Research and Innovation     Hybrid Journal   (Followers: 1)
International Journal of Pavement Research and Technology     Open Access   (Followers: 6)
International Journal of Protective Structures     Hybrid Journal   (Followers: 6)
International Journal of Steel Structures     Hybrid Journal   (Followers: 2)
International Journal of Structural Engineering     Hybrid Journal   (Followers: 9)
International Journal of Structural Integrity     Hybrid Journal   (Followers: 2)
International Journal of Structural Stability and Dynamics     Hybrid Journal   (Followers: 7)
International Journal of Sustainable Built Environment     Open Access   (Followers: 5)
International Journal of Sustainable Construction Engineering and Technology     Open Access   (Followers: 8)
International Journal on Pavement Engineering & Asphalt Technology     Open Access   (Followers: 7)
International Journal Sustainable Construction & Design     Open Access   (Followers: 2)
Journal of Applied Research in Water and Wastewater     Open Access   (Followers: 1)
Journal of Bridge Engineering     Full-text available via subscription   (Followers: 13)
Journal of Building Engineering     Hybrid Journal   (Followers: 2)
Journal of Building Materials and Structures     Open Access   (Followers: 2)
Journal of Building Performance Simulation     Hybrid Journal   (Followers: 6)
Journal of Civil Engineering     Open Access   (Followers: 1)
Journal of Civil Engineering and Construction Technology     Open Access   (Followers: 16)
Journal of Civil Engineering and Management     Open Access   (Followers: 7)
Journal of Civil Engineering and Science     Open Access   (Followers: 10)
Journal of Civil Engineering Research     Open Access   (Followers: 8)
Journal of Civil Engineering, Science and Technology     Open Access   (Followers: 1)
Journal of Civil Society     Hybrid Journal   (Followers: 5)
Journal of Civil Structural Health Monitoring     Hybrid Journal   (Followers: 4)
Journal of Composites     Open Access   (Followers: 79)
Journal of Composites for Construction     Full-text available via subscription   (Followers: 13)
Journal of Computing in Civil Engineering     Full-text available via subscription   (Followers: 23)
Journal of Construction Engineering     Open Access   (Followers: 9)
Journal of Construction Engineering and Management     Full-text available via subscription   (Followers: 18)
Journal of Construction Engineering, Technology & Management     Full-text available via subscription   (Followers: 4)
Journal of Constructional Steel Research     Hybrid Journal   (Followers: 6)
Journal of Earth Sciences and Geotechnical Engineering     Open Access   (Followers: 4)
Journal of Fluids and Structures     Hybrid Journal   (Followers: 6)
Journal of Frontiers in Construction Engineering     Open Access   (Followers: 2)
Journal of Green Building     Full-text available via subscription   (Followers: 10)
Journal of Highway and Transportation Research and Development (English Edition)     Full-text available via subscription   (Followers: 14)
Journal of Infrastructure Systems     Full-text available via subscription   (Followers: 19)
Journal of Legal Affairs and Dispute Resolution in Engineering and Construction     Full-text available via subscription   (Followers: 5)
Journal of Marine Science and Engineering     Open Access   (Followers: 1)
Journal of Materials and Engineering Structures     Open Access   (Followers: 6)
Journal of Materials in Civil Engineering     Full-text available via subscription   (Followers: 8)
Journal of Nondestructive Evaluation     Hybrid Journal   (Followers: 9)
Journal of Offshore Structure and Technology     Full-text available via subscription  
Journal of Performance of Constructed Facilities     Full-text available via subscription   (Followers: 3)
Journal of Pipeline Systems Engineering and Practice     Full-text available via subscription   (Followers: 6)
Journal of Rehabilitation in Civil Engineering     Open Access   (Followers: 4)
Journal of Road and Traffic Engineering     Open Access  
Journal of Solid Waste Technology and Management     Full-text available via subscription   (Followers: 1)
Journal of Structural Engineering     Full-text available via subscription   (Followers: 36)
Journal of Structural Fire Engineering     Full-text available via subscription   (Followers: 6)
Journal of Structural Mechanics     Open Access   (Followers: 1)
Journal of Structures     Open Access   (Followers: 4)
Journal of Sustainable Architecture and Civil Engineering     Open Access   (Followers: 4)
Journal of Sustainable Design and Applied Research in Innovative Engineering of the Built Environment     Open Access   (Followers: 1)
Journal of the Civil Engineering Forum     Open Access   (Followers: 2)
Journal of the South African Institution of Civil Engineering     Open Access   (Followers: 2)
Journal of Water and Environmental Nanotechnology     Open Access  
Journal of Water and Wastewater / Ab va Fazilab     Open Access  
Jurnal Spektran     Open Access   (Followers: 1)
Jurnal Teknik Sipil     Open Access  
Jurnal Teknik Sipil dan Perencanaan     Open Access   (Followers: 1)
Konstruksia     Open Access  
KSCE Journal of Civil Engineering     Hybrid Journal   (Followers: 2)
Latin American Journal of Solids and Structures     Open Access   (Followers: 4)
Lithosphere     Open Access  
Materiales de Construcción     Open Access   (Followers: 1)
Mathematical Modelling in Civil Engineering     Open Access   (Followers: 5)
Media Komunikasi Teknik Sipil     Open Access  
Media Teknik Sipil     Open Access  
Mokslas – Lietuvos ateitis / Science – Future of Lithuania     Open Access  
Nondestructive Testing And Evaluation     Hybrid Journal   (Followers: 15)
npj Materials Degradation     Open Access  
Obras y Proyectos     Open Access   (Followers: 1)
Open Journal of Civil Engineering     Open Access   (Followers: 9)
Periodica Polytechnica Civil Engineering     Open Access  
Photonics and Nanostructures - Fundamentals and Applications     Hybrid Journal   (Followers: 4)
Practice Periodical on Structural Design and Construction     Full-text available via subscription   (Followers: 3)
Proceedings of the Institution of Civil Engineers - Bridge Engineering     Hybrid Journal   (Followers: 8)
Proceedings of the Institution of Civil Engineers - Civil Engineering     Hybrid Journal   (Followers: 14)
Proceedings of the Institution of Civil Engineers - Management, Procurement and Law     Hybrid Journal   (Followers: 10)
Proceedings of the Institution of Civil Engineers - Municipal Engineer     Hybrid Journal   (Followers: 2)
Proceedings of the Institution of Civil Engineers - Structures and Buildings     Hybrid Journal   (Followers: 4)
Promet : Traffic &Transportation     Open Access  
Random Structures and Algorithms     Hybrid Journal   (Followers: 5)
Recent Trends In Civil Engineering & Technology     Full-text available via subscription   (Followers: 5)
REDER : Revista de Estudios Latinoamericanos sobre Reducción del Riesgo de Desastres     Open Access  
Research in Nondestructive Evaluation     Hybrid Journal   (Followers: 6)
Resilience     Open Access   (Followers: 1)
Revista de Investigación     Open Access  
Revista IBRACON de Estruturas e Materiais     Open Access   (Followers: 1)
Revista Sul-Americana de Engenharia Estrutural     Open Access  
Road Materials and Pavement Design     Hybrid Journal   (Followers: 11)
Russian Journal of Nondestructive Testing     Hybrid Journal   (Followers: 5)
Science and Engineering of Composite Materials     Hybrid Journal   (Followers: 61)
Selected Scientific Papers - Journal of Civil Engineering     Open Access   (Followers: 3)
Slovak Journal of Civil Engineering     Open Access   (Followers: 2)
Soils and foundations     Full-text available via subscription   (Followers: 5)
Steel Construction - Design and Research     Hybrid Journal   (Followers: 3)
Structural and Multidisciplinary Optimization     Hybrid Journal   (Followers: 11)
Structural Concrete     Hybrid Journal   (Followers: 11)
Structural Control and Health Monitoring     Hybrid Journal   (Followers: 8)
Structural Engineering International     Full-text available via subscription   (Followers: 11)
Structural Mechanics of Engineering Constructions and Buildings     Open Access   (Followers: 1)
Structural Safety     Hybrid Journal   (Followers: 6)
Structural Survey     Hybrid Journal  
Structure     Full-text available via subscription   (Followers: 24)

        1 2 | Last

Journal Cover
Ambiente Construído
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Online) 1678-8621
Published by SciELO Homepage  [726 journals]
  • Effect of accelerated aging on the properties of microconcrete reinforced
           with sisal fibers

    • Abstract: Resumo Neste trabalho dois microconcretos, com e sem metacaulinita, foram dosados para produção de compósitos laminados reforçados com fibras longas de sisal. Para garantir uma matriz livre de hidróxido de cálcio foi determinado o teor ideal de metacaolinita por análise termogravimétrica de pastas com teores de substituição de 20%, 30% e 40 nas idades de 4 h, 10 h, 24 h, 7 dias, 28 dias e 730 dias. Laminados com 30% de metacaolinita foram submetidos a ensaio de flexão após 28 dias de cura em água e após 12 e 25 ciclos de molhagem e secagem. A análise da microestrutura foi realizada a partir de microscopia eletrônica de varredura e espectroscopia de raios X por energia dispersiva (EDS). Os resultados demonstram que, no microconcreto contendo apenas cimento, o hidróxido de cálcio foi lixiviado da matriz e depositado na superfície da fibra, o que resultou em ruptura brusca devido ao enfraquecimento das fibras. Com a adição de metacaolinita, a matriz mostrou-se livre de hidróxido de cálcio, e o comportamento mecânico pós-fissuração não foi alterado pelo envelhecimento. No entanto, a variação de temperatura e umidade do ciclo molhagem-secagem induziu fissuração do microconcreto, o que negativamente afetou a resistência à formação da primeira fissura do compósito e seu modo de ruptura. In this study, two microconcrete samples, with and without metakaolin, were designed for the production of laminated composites reinforced with long sisal fibres. In addition to the reference microconcrete, another microconcrete was produced by replacing cement by metakaolin.The ideal metacaolin content that would guarantee a free calcium hydroxide matrix was determined by thermogravimetric analysis of blends with 20%, 30% and 40% substitution contents at the ages of 4 h, 10 h, 24 h, 7 days, 28 days and 730 days. Laminates produced with cement substitution by 30% metakaolin were submitted to flexural test after 28 days of curing in water, and after 12 and 25 wetting and drying cycles. The analysis of the microstructure was performed by scanning electron microscopy and dispersive energy X-ray spectroscopy (EDS). The results demonstrate that in the microconcrete containing only cement, the calcium hydroxide was leached from the matrix and deposited on the surface of the fibre. Thus, the aged composites showed a sudden rupture due to the weakening of the fibres. With the incorporation of metakaolin, the matrix showed to be free of calcium hydroxide, and the mechanical behaviour after cracking was not altered by aging. However, the temperature and humidity variation due the wet-drying cycle has induced cracking of the microconcrete, which detrimentally affected the strength at crack initiation of these composites and their rupture mode.
  • The use of the external diaphragm in the connection between an I beam
           section and tubular hollow section column

    • Abstract: Resumo O diafragma externo na ligação entre viga metálica de seção I e pilar metálico tubular de seção circular tem por objetivo o aumento na eficácia da transferência dos esforços. A proposta é dar alternativas ao uso desse sistema estrutural, reduzindo a limitação imposta por sua simples ligação ao se adicionar esse elemento, similar a um anel, que envolve o pilar e é conectado à mesa da viga. As pesquisas com diafragma externo tiveram início na década de 1970 no Japão, onde foram feitas análises teóricas e experimentais de sua aplicação. No Brasil os primeiros estudos ocorreram em 2005, porém as normas de estruturas em aço brasileiras ainda não abordam esse assunto. Neste trabalho são feitas análises numéricas da ligação com diafragma externo entre viga de seção I e pilar tubular de seção circular para diferentes larguras e espessuras desse enrijecedor, em que é constatado o considerável aumento da resistência e da rigidez da ligação. The external diaphragm in the connection between an I metal beam section and a hollow section tubular column is designed to increase efficiency in transfer of its efforts. This study aims at offering alternatives to the use of this structural system, reducing the limit imposed by its simple connection when this element is added, like a ring that surrounds the column and is connected to the beam flange. Studies investing the external diaphragm began in the 1970s in Japan, where theoretical and experimental analyses of its application were carried out. In Brazil, the first studies took place in 2005, but Brazilian steel structure standards have not yet addressed this issue. In this study numerical analyses were performed on connections with external diaphragm between I-beam section and hollow section tubular column for different widths and thicknesses of this stiffener. The analyses showed that there was considerable increase in the strength and stiffness of the connection.
  • Characterisation of medium density particleboards made with monocomponent
           castor oil-based polyurethane resin

    • Abstract: Resumo Dentre os fatores envolvidos na fabricação dos painéis destaca-se o tipo adesivo, em que o uso de novos pode resultar em boas propriedades aos materiais fabricados. Nesse contexto, esta pesquisa objetivou avaliar propriedades físicas e mecânicas de painéis de partículas fabricados com madeiras de Pinus sp. e de Eucalyptus grandis e unidas com resina poliuretana monocomponente derivada do óleo de mamona, cujo desenvolvimento desse adesivo vem sendo sistematicamente aperfeiçoado por diversos fabricantes. Foram produzidos dez painéis para cada espécie de madeira, ambos fabricados sobre as mesmas condições experimentais: 640 g de partículas (teor de umidade próximo de 10%), teor de adesivo de 15% sobre a massa de partículas, 10 min de tempo de prensagem a 100 ºC sob pressão de 4,0 MPa, consistindo nos mesmos parâmetros utilizados na fabricação de painéis de partículas de outras pesquisas, mas com o uso da resina bicomponente à base de mamona. Os painéis foram caracterizados segundo premissas e métodos de cálculo da norma brasileira NBR 14810-2 (2013), sendo utilizadas também normas internacionais para a verificação do requisitos. Com exceção da resistência ao arrancamento de parafuso, as demais propriedades obtidas superaram os requisitos dos documentos normativos utilizados. One of the main factors involved in the manufacture of panels is the adhesive type, in which the use of new adhesives can offer positive properties to the manufactured materials. This research study aimed to evaluate the physical and mechanical properties of particleboard made from Pinus sp. and Eucalyptus grandis wood adhered with monocomponent castor oil-based polyurethane resin, whose development has been systematically improved by several manufacturers. Ten particleboards were produced for each wood species evaluated, both manufactured using the same parameters and under the same experimental conditions: 640g of particles (approximately 10% moisture content), 15% adhesive content based on the particle mass, 10 min press time at 100ºC under a pressure of 4.0 MPa, consisting of the same parameters used in the manufacture of particleboards adopted in other research studies, but produced with bicomponent castor oil-based polyurethane resin. The panels were characterized according to the assumptions and methods of calculation specified in the Brazilian standard NBR 14810-2 (2013), using also the international standards for the verification of the requirements. With the exception of the screw pulling strength, the other properties obtained exceeded the requirements of the normative standards used.
  • Characterisation of residual açaí stone ash for addition to

    • Abstract: Resumo Os problemas ambientais são uma realidade do mundo atual e vêm associados ao crescimento urbano e populacional, com pouco ou nenhum planejamento. O setor da construção civil é um dos maiores consumidores de recursos naturais e gerador de resíduos sólidos. Assim, é interessante pensar em uma maneira de incorporar materiais que hoje são considerados resíduos ao processo construtivo e reduzir o consumo de materiais naturais. Nessa vertente, tem-se as cinzas de caroço de açaí, resíduo de fornos cerâmicos, que hoje não apresentam um destino adequado. Assim, esta pesquisa tem por objetivo principal caracterizar a cinza de caroço de açaí residual (CCAR), de modo a possibilitar seu reaproveitamento como insumo da construção civil. Para que esse objetivo seja alcançado realizou-se um estudo de moagem, de modo a determinar o tempo ótimo de beneficiamento do material, a caracterização do ponto de vista químico, físico e mineralógico e a análise do potencial pozolânico para avaliar a reatividade da cinza residual. Os resultados mostram que a cinza apresenta características físicas que permitem utilizá-la como adição ao concreto. Houve diminuição na resistência à compressão axial e aumento da absorção de água dos concretos com adições, em relação ao concreto de referência. Apesar desses efeitos, percebeu-se certa densificação da matriz cimentícia, provavelmente devido à variação do tamanho das partículas que podem vir a proporcionar maior compacidade com otimização do empacotamento dos grãos. Environmental problems are a reality in today's world and are associated with urban and population growth, with little or no planning. The construction industry is one of the largest consumers of natural resources and generator of solid waste. Thus, it is interesting to think of a way to incorporate materials that are now considered waste, to the constructive process and reduce the consumption of natural materials. In this section, we have the ashes of açaí stone, residue of ceramic kilns, that today do not present an adequate destination. Thus, this research has the main objective to characterize residual ash of açaí (CCAR), in order to make possible its reuse as an input of the civil construction. In order to achieve this objective, a milling study was carried out in order to determine the optimum material processing time, characterization from the chemical, physical and mineralogical point of view, and the pozzolanic potential analysis to evaluate the residual ash reactivity. The results show that ash has physical characteristics that allow it to be used as an addition to concrete. There was a decrease in the axial compressive strength and an increase in the water absorption of concrete with additions, in relation to the reference concrete. In spite of these effects, a certain densification of the cementitious matrix was observed, probably due to the variation of the particle size that may provide greater compactness with optimization of grain packing.
  • Effect of the incorporation of TiO2 waste (UOW) in the formation of the
           mineralogical phases of Portland clinker

    • Abstract: Resumo O reaproveitamento de resíduos industriais para o setor da construção civil tem se mostrado uma alternativa ambiental e economicamente atrativa, principalmente para a indústria do cimento, que por muito tempo tem procurado procedimentos que efetivamente reduzam a alta energia e emissões de CO2 gerados durante a produção de clínquer. Nesse sentido, destaca-se a necessidade de utilização de materiais alternativos na produção de clínquer como substitutos parciais às matérias-primas. Dessa forma, o objetivo da presente pesquisa é avaliar a produção de clínquer Portland com baixa emissão de dióxido de carbono a partir da incorporação de minério não reagido (MNR), resíduo gerado durante a produção de dióxido de titânio (TiO2). As emissões de dióxido de carbono geradas durante a produção desse material foram verificadas através de análises térmicas (TG/DTG), e a influência do resíduo na formação de fases dos clínqueres foi verificada por análise mineralógica (DRX), por microscopia óptica (MO) e por microscopia eletrônica de varredura (MEV). A partir dos resultados obtidos, determinou-se o teor de incorporação ideal de TiO2 para produção de clínquer, sendo constatado que o MNR, até um teor limite de incorporação, atua como mineralizante, sendo, assim, benéfico para a formação de alita. The reuse of industrial waste in the construction industry has proven to be an environmentally and economically attractive alternative, especially for the cement industry, which has long sought after procedures that effectively reduce the high use of energy and CO2 emissions generated during clinker production. In this sense, it is necessary to use alternative materials as partial substitutes for raw materials in clinker production. Thus, the objective of this research study is to produce Portland clinker with low carbon dioxide emissions from the incorporation of unreacted ore (UOW), a waste generated during the production of titanium dioxide (TiO2). The carbon dioxide emissions generated during the production of this material were verified by thermal analysis (TG/DTG), and the influence of the waste on the formation of clinker phases was verified by mineralogical analysis (XRD), optical microscopy (MO) and scanning electron microscopy (SEM). The results obtained led to the determination of the ideal incorporation content of TiO2 for clinker production, and they also showed that the UOW - up to a limit content of incorporation - acts like a mineraliser and is, therefore, beneficial for the formation of alite.
  • Evaluation of granulated foundry slag in self-compacting concrete

    • Abstract: Resumo O presente estudo propõe um novo uso para a escória granulada de fundição: contribuir para a obtenção da viscosidade adequada em concretos autoadensáveis. Nesse tipo de concreto, em função de sua elevada fluidez, comumente são relatados problemas de segregação e, para contorná-los, podem ser utilizados fillers. A escória granulada é um resíduo oriundo da produção do ferro fundido. O grande volume gerado é problema para a indústria da fundição, que tem elevados custos para efetuar seu descarte de maneira adequada. A fim de propor um emprego para esse resíduo, garantindo benefícios tanto para a indústria que o gera quanto para a construção civil, o presente estudo tem como objetivo avaliar o emprego da escória granulada de fundição moída como modificador de viscosidade em concretos autoadensáveis, minimizando a potencialidade de segregação desse tipo de concreto. Os resultados obtidos mostram que a escória granulada de fundição moída possibilita a obtenção de concretos autoadensáveis sem segregação e com fluidez adequada. Além disso, tanto para as propriedades mecânicas quanto para a avaliação de durabilidade houve melhora com o emprego do resíduo, o que torna viável seu emprego para o fim proposto. This study proposes a new use for granulated slag foundry: its application as a viscosity modifier in self-compacting concrete. During the production of cast iron, one of the main waste products coming from the granulate is slag. The large volume generated is a problem for the foundry industry, which incurs in high costs to carry out its disposal properly. This is the kind of waste that presents pozzolanic activity and, therefore, can be used as a substitute for Portland cement. However, the building industry has not yet taken advantage of this waste property, since other pozzolanic materials are still more traditional (fly ash, blast furnace slag, among others). Due to their high fluidity in self-compacting concretes, segregation problems are commonly reported. The use of cast granulated slag as a viscosity modifier, minimizing its segregation potential, was evaluated in this study. The results show that this waste makes it possible to obtain self-compacting concretes with adequate viscosity. In addition, it improved mechanical and durability properties, making feasible the use of this residue for the proposed ends.
  • Multiple linear regression model to evaluate the market value of
           residential apartments in Fortaleza, CE

    • Abstract: Resumo A avaliação de imóveis, que auxilia na definição do valor de mercado, é uma ciência importante e com vasto campo de atuação, seja na cobrança de impostos, transações comerciais, seguros e perícias judiciais, por exemplo. Este trabalho apresenta a construção de um modelo de regressão linear para determinação do valor de mercado (variável dependente) de apartamentos residenciais na cidade de Fortaleza, CE. O banco de dados estudado apresenta 17.493 apartamentos, divididos em 227 tipos de planta em um total de 154 empreendimentos lançados entre os anos de 2011 a 2014. O modelo desenvolvido foi obtido utilizando-se a regressão linear múltipla associada à técnica de ridge regression para solucionar o problema de multicolinearidade existente. Na análise de 30 variáveis (12 quantitativas e 18 variáveis qualitativas do tipo dummy) chegou-se a uma equação com 6 variáveis, que atende aos pressupostos teóricos para a sua existência. The valuation of real estate, which assists in the definition of market value, is an important science with a wide field of action, which includes the collection of taxes, commercial transactions, insurance and judicial expertise. This study presents the construction of a linear regression model to determine the market value (dependent variable) of residential apartments in the city of Fortaleza-CE. The studied database presents 17,493 apartments, divided into 227 plan types in a total of 154 projects launched between the years of 2011 and 2014. The model developed was obtained using Multiple Linear Regression associated with the Ridge Regression technique to solve the existing multicollinearity problem. In the analysis of 30 variables (12 quantitative and 18 dummy type qualitative variables), an equation with 6 variables was reached, which meets the theoretical assumptions for its existence.
  • Use of infrared thermography for detection of moisture sources in internal
           walls of buildings

    • Abstract: Resumo O uso da termografia infravermelha tem se tornado alvo de estudos em várias áreas dentro da construção civil. Contudo, as pesquisas de detecção de presença de umidade em edificações ainda estão em desenvolvimento. O objetivo principal deste artigofoi estudar a viabilidadedo uso da termografia para a detecção de infiltrações devido a causas fortuitas em paredes internas. A metodologia consistiu na confecção de paredes de alvenaria de tijolos cerâmicos com diversas configurações de revestimento: sem revestimento, com gesso, gesso com tinta base látex, gessocom tinta base acrílica e gesso com cerâmica assentada com gesso cola. Em cada protótipo foi inserida uma tubulação furada a fim de simular vazamento. O avanço da infiltração foi verificado por meio de termogramas, por um período de 2 h com vazão constante, com 48 h e uma semana após o início da simulação. Os resultados encontrados confirmam que a termografia pode ser eficaz na detecção da região que contém o foco da infiltração oculta, desde que o revestimento não seja impermeável. Esse fato pode ser observado por meio dos gradientes térmicos produzidos. Nos revestimentos porosos ∆T variou entre 2,6 ºC e 3,8ºC, e aqueles com características impermeáveis apresentaram ∆T máximo de 2,2ºC, indicando a influência direta do tipo de revestimentono tempo de surgimento da mancha de umidade de forma aparente. The use of infrared thermography has become the theme of studies in several areas of the construction industry. However, research studies on detecting the presence of moisture in buildings are still under development. The main objective of this article was to study the feasibility of the use of thermography in the detection of infiltrations due to accidental causes in internal walls. The methodology consisted of the construction of masonry walls made of ceramic bricks with different coating configurations: uncoated, with plaster, plaster with latex paint, plaster with acrylic base paint and plaster with ceramic set with plaster glue. In each prototype, a drilled pipe was inserted to simulate water leaks. The infiltration progress was verified by means of thermograms, for a period of 2 hours with constant flow, and at 48 hours and one week after the beginning of the simulation. The results confirm that thermography may be effective in detecting the region containing the focus of hidden infiltration, provided the coating is not impermeable. This fact can be observed in the thermal gradients produced in the porous coatings, where ΔT ranged from 2.6 to 3.8 º C, whereas coatings with waterproof characteristics had a maximum ΔT of 2.2 ºC. In addition, the type of coating directly influences the time required for the appearance of the moisture spot to become apparent.
  • Influence of the installation conditions of stormwater drainage building
           systems on source drainage solutions

    • Abstract: Resumo Os sistemas de drenagem na fonte vêm ganhando espaço como soluções de desenvolvimento de baixo impacto implantadas em edifícios urbanos. Apesar disso, são poucas as pesquisas que avaliam a influência das condições das instalações dos sistemas prediais de águas pluviais sobre seu desempenho. Este trabalho avalia a influência da adoção de diferentes componentes da instalação do sistema predial de água pluvial no desempenho de sistemas de infiltração. Para tanto, foram executados dois sistemas experimentais, poço de infiltração e jardim de chuva, contendo condutores verticais e horizontais, montados conforme instalações que representam uma edificação vertical. Foram avaliados o escoamento no ramal que direciona a água de chuva para o sistema de infiltração e a ocorrência de retorno de água para pontos de captação posicionados próximos aos sistemas de infiltração. Verificou-se que parte da água passa direto para a tubulação que deságua no sistema urbano de drenagem em determinadas configurações de montagem do ramal que direciona a água de chuva para o sistema de infiltração, reduzindo a eficiência do sistema como um todo. Além disso, ocorreu refluxo em caixas drenantes posicionadas a montante dos sistemas de infiltração, o que indica a necessidade de cautela no posicionamento desses componentes. Source drainage systems are gaining importance as low-impact development solutions deployed in built-up areas. However, only limited number of research studies have evaluated the influence of the installation conditions of stormwater drainage building systems on these systems' performance. This paper evaluates the influence of the adoption of different components of installation of stormwater drainage systems on the performance of infiltration systems. With that purpose, two experimental systems were executed: a dry-well and a rain garden, containing vertical and horizontal conductors mounted according to installations that represent a vertical building. The study evaluated the flow in the conductor branch that directs the stormwater to the infiltration system and the occurrence of water return to catchment points positioned near the infiltration systems. The experiment showed that part of the drained volume of stormwater passes directly to the piping that flows into the urban drainage system in certain plumbing fittings configurations that direct the stormwater to the infiltration system, reducing the overall efficiency of the system. In addition, reflux occurred in drainage boxes positioned upstream of the infiltration systems, indicating the need for caution in the positioning of these components.
  • A meta-analysis over geometric modeling simplifications in ENVI-met urban
           climate simulation

    • Abstract: Environmental modelling requires, among other aspects, a description of the built geometry. However, the complexity of the urban tissue draws uncertainties about the building form and locations. Therefore, during the planning process generic simplified geometry models may be more appropriate than the detailed ones. This research shows a meta-analysis performed by comparing the results of detailed and simplified geometric models. The prediction deviations that may arise from using geometric simplifications on ENVI-met modelling were evaluated, considering the output data from different building typologies (one and ten-storey buildings) and urban scenarios (with and without internal squares). Three metrics were analysed: air temperature, wind speed, and sky view factor (SVF). These metrics were normalized between 0 and 1 for comparison and performance assessment. The results indicated that the most adequate simplification models are those that that have kept the building perimeter of the blocks unchanged in relation to the corresponding detailed models.Resumo A modelagem do clima urbano requer a descrição da geometria do ambiente construído, entretanto a complexidade do tecido urbano traz incertezas sobre o formato e localização exata das edificações. Portanto, durante o processo de planejamento, modelos de geometria simplificada podem ser mais apropriados que modelos detalhados. Nessa pesquisa foi realizada uma meta-análise, por comparações entre os resultados obtidos através de modelagens geométricas detalhadas e simplificadas. Assim, avaliaram-se os desvios de predição provocados pelo uso de geometrias simplificadas em simulações feitas com o ENVI-met, considerando diferentes tipologias construtivas (edifícios térreos e com dez pavimentos) e cenários urbanos (com e sem quadras internas). Três métricas foram analisadas: temperatura do ar, velocidade do vento e fator de visão do céu. Essas métricas foram normalizadas entre 0 e 1 para efeito de comparação e verificação de desempenhos. Os resultados revelaram que as melhores simplificações correspondem a modelos que mantêm inalterado o perímetro construtivo das quadras em relação aos modelos detalhados.
  • Modelling of basement heat transfer in EnergyPlus simulation program

    • Abstract: Resumo A temperatura do solo é um dos fatores mais influentes nas avaliações de desempenho térmico de ambientes subterrâneos e quase sempre é desconsiderada. Por isso, é necessário avaliar essa influência devido à interação do solo com a edificação, pois a transferência de calor através de paredes e pisos subterrâneos tem uma extensão significativa na carga térmica total de uma edificação. Este trabalho compara e avalia o impacto de diferentes alternativas de modelagem presentes no programa de simulação EnergyPlus por meio da análise das trocas de calor entre o solo, o piso e as paredes de um ambiente subterrâneo de uma edificação unifamiliar de São Paulo, Brasil, não condicionada artificialmente e não isolada termicamente. A comparação das alternativas de modelagem por meio da análise recomendada pela NBR 15575 indicou grande variação nos resultados de temperatura interna do ambiente subterrâneo da edificação. Quando comparado ao pré-processador Basement, os modelos do objeto GroundDomain apresentaram variação de temperatura interna do ambiente subterrâneo de até 6 ºC no verão e de 5,2 ºC no inverno. Tais resultados fornecem indicações da influência e da variabilidade que o uso das diferentes opções de modelagem do EnergyPlus podem gerar em uma análise de desempenho térmico. Soil temperature is one of the most influential factors in the evaluation of the thermal performance of underground environments, but it is almost always disregarded. Thus, it is necessary to evaluate this influence due to the interaction of the soil with the building, since heat transfer through subterranean walls and floors has a significant extension in the total thermal load of a building. This study compares and evaluates the impact of different modelling alternatives present in the EnergyPlus simulation program by analysing the heat exchanges between the soil, the floor and the walls of a basement of a single-story building in São Paulo, Brazil, not artificially conditioned and not insulated thermally. The comparison between the modelling alternatives through the analysis recommended by NBR 15575 indicated a large variation in the internal temperature results of the underground building environment. When compared with Basement pre-processor, the models of the object GroundDomain presented an internal temperature variation of the basement up to 6 ºC in the summer and up to 5.2 ºC in the winter. These results offer indications of the influence and variability that the use of the different modelling options present in EnergyPlus program can generate in a thermal performance analysis.
  • Perceptive priority and satisfaction criteria of environmental attributes
           in Intensive Care Units

    • Abstract: Resumo O objetivo deste estudo é identificar a prioridade perceptiva e de satisfação quanto aos atributos de conforto ambiental de profissionais adaptados ao clima tropical atuantes em Unidades de Terapia Intensiva (UTIs). Para tanto, avaliou-se, por meio de questionários de percepção e satisfação, profissionais de nove UTIs pertencentes à rede pública de saúde e localizados em cidade de clima tropical, além de medidas experimentais do ambiente. Os dados foram tratados por meio do método PROMETHEE e de testes inferenciais de Kruskal-Wallis e Mann-Whitney para identificação da sobreclassificação dos atributos de prioridade. Os resultados indicam que a temperatura do ar é o atributo de maior prioridade entre os profissionais intensivistas adaptados ao clima tropical, sendo a tolerância particularmente ao ruído distinta para diferentes valores de predicted mean vote (PMV). Conclui-se que uma avaliação de conforto ambiental deve considerar os atributos prioritários para os ocupantes, a fim de que a percepção e satisfação do ambiente global seja otimizada. The aim of this study is to identify the perceptive priority and satisfaction related to environmental comfort attributes of professionals adapted to a tropical climate, who work in Intensive Care Units (ICUs). For this purpose, professionals from nine Intensive Care Units (ICUs) - in the public health network in a city with tropical climate - were assessed through perception and satisfaction questionnaires, in addition to experimental measurements of the environment. Data were treated using the PROMETHEE method and Kruskal-Wallis and Mann-Whitney inferential tests to identify the over classification of the priority attributes. The results indicate that air temperature is the highest priority attribute among the intensive care professionals adapted to a tropical climate, with tolerance to noise showing to be particularly different for different PMV (Predicted Mean Vote) values. The conclusion of the study is that environmental comfort assessments must consider the priority attributes for occupants in order to optimize the perception and satisfaction with the global environment.
  • The orientation and mobility of visual impaired people in bus and subway
           networks in Brazil

    • Abstract: Spatial orientation depends both on the information available in the surrounding’s environment and on the individual's ability to perceive and deal with this information. To be fully understand by its users as a transport network and, to independently move from one place to another, the urban public transport service must be able to provide accessible information where users can easily discover and reach different, and to socially engage in local activities. In Brazil, the information disposable to users is scarce and sometimes nonexistent in the urban public transport (PT), especially regarding the supply of information to everyone. This paper presents some doctoral research’s results applied in Brazil and discuss blind users’ orientation and mobility in urban public transport network. The investigation involved around two hundred blind and partially impaired users from many Brazilian regions where surveys were conducted; additionally, interviews with a focus group and the "Accompanied Walks” method. The results of the latter are here presented, showing environmental barriers and users needs.Resumo Orientação espacial depende tanto da informação contida no ambiente quanto da capacidade do indivíduo em perceber e lidar com essa informação. Para poder entender um sistema de transporte público urbano e mover-se de forma independente de um lugar para outro, esse serviço deve fornecer informações acessíveis aos usuários, para que esses possam exercer seu direito de ir e vir, bem como chegar aos lugares e atividades. No Brasil, a informação disponível para os usuários é escassa e às vezes inexistente, especialmente no que se refere ao fornecimento de informações não visuais. Este artigo apresenta alguns dos resultados de uma pesquisa de doutorado que ouviu cerca de duzentas pessoas de Norte à Sul do país. Dentre os métodos aplicados, os resultados dos Passeios Acompanhados são apresentados neste artigo, buscando refletir acerca da orientação e mobilidade de usuários com cegueira e baixa visão em seus deslocamentos urbanos utilizando um sistema de transporte coletivo.
  • Hypothetical study for a preliminary evaluation of resilience in urban

    • Abstract: Resumo O objetivo deste estudo é desenvolver uma estratégia de avaliação da resiliência da mobilidade urbana. A abordagem é baseada em um cenário hipotético em que transportes motorizados estariam impossibilitados de ocorrer por restrições diversas. Portanto, apenas os modos a pé e bicicleta foram considerados para este exercício teórico. As viagens foram inicialmente classificadas em dois grupos, de acordo com sua adaptabilidade ou transformabilidade, sendo as do primeiro grupo consideradas resilientes. Uma terceira categoria teve que ser introduzida, no entanto, para representar outro conjunto de viagens resilientes. Estas são as viagens excepcionais, isto é, viagens a pé ou de bicicleta que são mais longas do que as Distâncias Máximas Possíveis (DMP) definidas para a avaliação da resiliência. Em uma aplicação do método realizado na cidade de São Carlos, SP, com DMP de 3 km e 8 km para viagens a pé e de bicicleta respectivamente, 97,7% das viagens foram classificadas como resilientes, o que é um resultado positivo. The aim of this study aims is to develop a strategy to evaluate the resilience of urban mobility. The approach is based on the assumption that no forms of motorised transport would be available. Hence, only walking and cycling were considered as urban transport modes for the purpose of this theoretical exercise. The trips were initially classified in two groups, according to their adaptability or transformability. Those in the first group are considered resilient trips. However, a third category had to be created to represent another set of resilient trips. These are the exceptional trips, i.e. walking or cycling trips that are longer than the Maximum Possible Distances (MPD) defined for the evaluation of resilience. In an application of the method conducted in the city of São Carlos - SP, with MPDs of 3 km (for walking) and 8 km (for cycling), 97.7% of the trips were classified as resilient, which is a positive outcome.
  • Sidewalk Service Index (ISC)

    • Abstract: Resumo O serviço oferecido pela infraestrutura de circulação de pedestres deve suprir a demanda local e proporcionar conforto e segurança a seus usuários. A questão é particularmente importante em cidades pequenas, para as quais, devido à ausência de transporte público e às pequenas distâncias, as viagens a pé constituem a base da mobilidade urbana. Esta pesquisa objetivou propor método de avaliação do nível de serviço (NS) de calçadas para cidades de pequeno porte, para disponibilizar recurso técnico à gestão desses espaços pelas municipalidades. O modelo elaborado e aplicado em São Tomé, PR, foi denominado Índice de Serviço das Calçadas (ISC), composto de dois índices que envolvem aspectos de qualidade do espaço (ISCqe) e de acessibilidade (ISCa). O método envolveu três etapas: análise técnica das calçadas (570 quadras), verificação da percepção do usuário por meio de pesquisa de opinião (355 munícipes) e atribuição dos níveis de serviço, variando de A (melhor situação) a F (pior situação), conforme resultados dos índices. Houve maior ocorrência do NS-F, principalmente nas áreas urbanas periféricas. Já níveis de serviço mais adequados (NS-A a NS-D) foram conferidos a 34,91% das quadras. O modelo apresentou aplicabilidade adequada às cidades pequenas, havendo possibilidade de adaptações para utilização em maiores centros. The service offered by the pedestrian circulation infrastructure must meet local demand, providing comfort and safety to its users. This issue is particularly important in small towns, where, due to the lack of public transport and the short distances, walking is the basis of urban mobility. The aim of this research study was to propose method of evaluation of the Level-of-Service (LoS) of sidewalks in small urban centers, aiming to provide a technical resource to the management of these spaces by Municipalities. The model developed and applied in São Tomé, Paraná, Brazil, was called the Sidewalks Service Index (ISC in Portuguese), consisting of two indices that involve aspects of Space Quality and Accessibility (ISCqe and ISCa in Portuguese). The method involved three steps: technical analysis of the sidewalks (570 stretches), verification of users’ perceptions by means of opinion polls (355 citizens) and assignment of Service Levels, varying from A to F (worst situation), according to results of the indices. There was a higher occurrence of LoS F, mainly in the peripheral urban areas. The most adequate Levels-of-Service (LoS A to D) were assigned to 34.91% of the stretches. The proposed model presented adequate applicability to small towns, with adaptations possible for use in larger centers.
School of Mathematical and Computer Sciences
Heriot-Watt University
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