Publisher: Diponegoro University   (Total: 25 journals)   [Sort by number of followers]

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Bulletin of Chemical Reaction Engineering & Catalysis     Open Access   (Followers: 3, SJR: 0.2, CiteScore: 1)
Geoplanning : J. of Geomatics and Planning     Open Access   (Followers: 5)
ILMU KELAUTAN : Indonesian J. of Marine Sciences     Open Access   (Followers: 1)
Indonesian Historical Studies     Open Access   (Followers: 2)
Intl. J. of Renewable Energy Development     Open Access   (Followers: 8)
Intl. J. of Waste Resources     Open Access   (Followers: 6)
Izumi : Jurnal Bahasa, Sastra dan Budaya Jepang     Open Access  
J. of Biomedicine and Translational Research     Open Access  
J. of Coastal Development     Open Access   (Followers: 2)
J. of the Indonesian Tropical Animal Agriculture     Open Access   (SJR: 0.126, CiteScore: 0)
Jurnal Anestesiologi Indonesia     Open Access  
Jurnal Gizi Indonesia / The Indonesian J. of Nutrition     Open Access   (Followers: 3)
Jurnal Kelautan Tropis     Open Access  
Jurnal Pengembangan Kota     Open Access  
Jurnal Presipitasi     Open Access   (Followers: 1)
Jurnal Reaktor     Open Access  
Jurnal Sistem Komputer     Open Access   (Followers: 2)
Jurnal Teknologi dan Sistem Komputer     Open Access  
Jurnal Wilayah dan Lingkungan     Open Access   (Followers: 1)
Media Komunikasi Teknik Sipil     Open Access  
Parole : J. of Linguistics and Education     Open Access  
Politika : Jurnal Ilmu Politik     Open Access  
Tataloka     Open Access  
Teknik     Open Access  
Waste Technology     Open Access   (Followers: 4)
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Media Komunikasi Teknik Sipil
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ISSN (Print) 0854-1809 - ISSN (Online) 2549-6778
Published by Diponegoro University Homepage  [25 journals]
  • The Use of Ground Motion Parameters to identify the Liquefaction during a
           Strong Earthquake in Northern Thailand

    • Authors: Lindung Zalbuin Mase
      Pages: 1 - 8
      Abstract: This paper presents a ground response analysis to simulate the liquefaction phenomenon during the 2011 Tarlay Earthquake in northern Thailand. The site investigation data and geophysical measurements on 7 sites in northern Thailand were collected. The multi-springs element model was implemented in finite element ground response analysis. Several parameters, such as peak ground acceleration, peak ground velocity, amplification factor, excess pore pressure ratio, were observed. Furthermore, the correlation from the ground motion parameters was generated to estimate liquefaction potential, which was represented by excess pore pressure ratio. The result showed that the excess pore pressure ratio was relatively well correlated with several ground parameters, such as amplification factor, velocity-acceleration ratio, and factor of safety against liquefaction. The results could be also used for the engineering practice in predicting liquefaction potential in Northern Thailand.

      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.29218
      Issue No: Vol. 27, No. 1 (2021)
  • Creep Behavior of Open Web Truss Joist Made of LVL Sengon

    • Authors: Achmad Basuki, Ali Awaludin, Bambang Suhendro, Suprapto Siswosukarto
      Pages: 9 - 17
      Abstract: Laminated Veneer Lumber (LVL) Sengon is classified as one of the engineering products having a significant increase of both physical and mechanical properties compared with Sengon solid wood. Considering its short planting years and sustainable production, Sengon wood is very potential to be used as construction materials of low-rise houses to support the housing needs in Indonesia. Creep behaviour of LVL Sengon material is one of the mechanical properties that needs to be considered. This article evaluated value of creep factor of the open web truss joist (OWTJ) LVL Sengon test and compared this experimental creep factor with the numerical results developed by FE model taking into account the viscoelastic parameters of authors' previous study. The viscoelastic parameters were based on a 217-day creep test of compression and tension parallel to the grain of LVL Sengon at 20 % of stress level that were further modeled using Prony series creep model having n equals to 3. The reduction in the modulus of elasticity over time resulted in creep deflection and creep factor values at 217 days of testing results and FE numerical analysis of the OWTJ LVL Sengon ranging from 1.50–1.54; while the predicted creep factor at 25 years of service life is 1.57 or greater than the creep factor value provided in SNI 7973: 2013 of 1.5.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.31916
      Issue No: Vol. 27, No. 1 (2021)
  • Barriers to the Implementation of Sustainable Construction: Government

    • Authors: Debby - Willar, Bambang Trigunarsyah
      Pages: 18 - 28
      Abstract: Sustainable construction is a way for the construction industry to achieve sustainable development by considering social, economic, environmental, and cultural issues. Policies for implementing sustainable construction in infrastructure delivery are still not clearly understood, resulting in challenging implementation by planners and contractors. This research study identifies the barriers to implementing sustainable construction in developing infrastructure projects in Bina Marga, Cipta Karya, Sumber Daya Air, and Perumahan Permukiman sectors in North Sulawesi Province. Data collection using semi-structured interviews involved 23 informants from these four sectors. The results of the study found that the barriers evenly occur throughout the life cycle of an infrastructure project in four sectors, namely: (1) the programming phase related to strategic planning documents and identification of barriers, (2) the technical planning phase related to technical understanding and competence service providers, (3) construction implementation phase related to expert consultants, service provider competence, and green construction technology, (4) utilization phase related to socialization, promotion, and education, (5) demolition phase related to mechanisms and availability of resources. The study results provide academic-based information for the government to minimize barriers to implementing sustainable construction policies throughout Indonesia.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.33764
      Issue No: Vol. 27, No. 1 (2021)
  • A Note on The Design of Seawall for Tsunami Disaster Mitigation

    • Authors: Radianta Triatmadja, Warniyati Warniyati
      Pages: 29 - 40
      Abstract: Many coastal structures or structures in coastal areas were destroyed by a tsunami attack. Such destructions were due primarily to the fact that such structures were not designed to withstand a tsunami. Those which were designed to withstand tsunami force may also have been destroyed due to some damaging factors which were not included in the design. The damage of the coastal structures is one of the important factors that have caused casualties. Especially, when the destroyed structures were originally aimed to mitigate the area against tsunami, they may cause higher fatalities. Examples of such structures are sea walls in many parts of Japan which were destroyed by the 2011 tsunami. This paper discusses the important factors relevant to the damage of seawall as tsunami mitigation structure such as impact force due to tsunami front, hydrostatic force, and hydrodynamic force, debris force and scour due tsunami. The study was carried out based on literature about the damages of seawall as tsunami protection structures and laboratory experiment reports. The destructions to the structures were divided into three classifications namely instantaneous direct destruction due to impact and drag forces, slowly direct destruction due to drag force, and slowly indirect destruction due to scour. Finally, important aspects to be considered in the design of seawall as tsunamis protection were proposed.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.33861
      Issue No: Vol. 27, No. 1 (2021)
  • Seismic Behavior of RCS Composite Frame Structure with Rigidity Zone
           Factor Variations of Beam-Column Connections

    • Authors: I Ketut Sudarsana, I Gede Adi Susila, Ni Wayan Sastraningsih
      Pages: 41 - 50
      Abstract: This research evaluated the effect of connection’s rigidity zone factors of RCS frame’s connections on the seismic behavior of regular RCS frames of a five-story office building located at seismic design category (SDC) of D. The variations on rigidity zone factors were 0, 0.25, 0.50, 0.75, and 1.0, respectively for Model MS, MSR025, MSR05 MSR075, and MR with the same elements’ dimension. A 3-D finite element modeling was conducted to do a linear elastic analysis for structural design and nonlinear static pushover analysis for evaluating the structural seismic performance. The results show that all models have met the strength and serviceability design limits. The seismic performances in terms of base shear, elastic stiffness, and ductility of all RCS models increased with an increase in the values of the rigidity zone factor. The structural performance level according to FEMA 440 was life safety (LS) for the Model MSR05, MSR075, and MR, while for the Model MS and MSR025 was collapse prevention (CP). The seismic energy dissipation for all RCS frames was an intermediate category indicated by the numbers of developed plastic hinges less than 20% of the total potential plastic hinges
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.29390
      Issue No: Vol. 27, No. 1 (2021)
  • Commuters' Behavior in Response to the Policy of Conversion of
           Paratransit to City Buses in the Bandung City

    • Authors: Dwi Prasetyanto, Muhamad Rizki, Wiena Rustanti Gardjito
      Pages: 51 - 60
      Abstract: Bandung City Government plans to improve their bus services which are expected to decline traffic congestion,
      reduce air pollution, and improve road safety. One of the efforts is to implement the conversion policy of minibus/paratransit to public bus. The purpose of this study is to analyze people's behavior related for the
      conversion policy above and their intentions to use it. For that purpose, the analysis performed with the data
      that obtained by interviewing public transport users in Bandung City. The method used in this research is
      Theory of Planned Behavior. It is found that, the effect of evaluation outcomes, motivation to comply and
      perceived power proven to be significant on the behavioral intention to shift the use of public transportation
      from mini public buses to city buses. The contribution of evaluation outcomes influences the highest compared
      to other factors, which is 32.36%, this shows that the evaluation of the performance of city bus services is the
      most dominant factor in shaping the behavioral intention to use city bus. Positive perception towards the
      conversion policy is in the high number, however, the intentions to shift to public transport should be supported
      by ensuring high quality bus services.

      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.29223
      Issue No: Vol. 27, No. 1 (2021)
  • Mode Selection Sensitivity Analysis between BRT and Private Vehicle (Case
           Study of Pontianak City CBD Area)

    • Authors: Rudi Sugiono Suyono, Nurhayati Nurhayati, Wisa Yustrinisa
      Pages: 61 - 68
      Abstract: This type of public transportation BRT mode began to be officially applied in Pontianak City to overcome traffic congestion. The problem is that many travelers prefer to use private vehicles rather than public transportation. This study aims to analyze the sensitivity of the mode selection model which explains the probability of choosing a BRT against aprivate vehicles if a BRT is presented in the Central Business District of Pontianak City. The mode selection method uses the Stated Preferences Technique in the form of a quetionnaire which is analyzed by multiple linear regression to obtain a utility equation. Based on the results of the sensitivity analysis of the mode selection model, the probability value of selecting BRT is 21,7%, if it is in conditions where the difference in the attributes offacilities and comfort (X1) is -10, this means that there are no facilities and conveniences of BRTsuch as private vehicles, thesecond is the difference in  thewaiting time attribute (X2) which is 15 minutes, the third condition is the difference in travel costs attribute (X3) namely Rp 0,- and the fourth condition is the difference in travel time attribute (X4), which is 10 minutes To increase the probability of choosing a BRT to 60%, it can be done by increasing the difference between the facilities and comfort attributes to 0 (zero), which means there is no difference in facilities and comfort that BRT has with private vehicles such as the availability of air conditioning, free WIFI, clean, fragrant, having a bag storage area  and others. This is because the most sensitive attributes compared to other attributes are facilities and comfort attributes.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.29306
      Issue No: Vol. 27, No. 1 (2021)
  • Evaluation of Cost Effectiveness of Performance Based Contract for
           National Road Improvement and Maintenance Projects

    • Authors: Andhika Ajengtyas Setorini, Jati Utomo Dwi Hatmoko, Bagus Hario Setiadji
      Pages: 69 - 79
      Abstract: As an effort to maintain and improve its national road condition with a strict budget, the Government of Indonesia has implemented various types of contract in road maintenance. One of the road maintenance contract, i.e. performanced based contract (PBC), allows the contractor to design, build, and maintain the road and use performance measures as payment requirement. While many researches state that the PBC implementation on road maintenance may lead to cost efficiency, in Indonesia the cost efficiency is still questionable. This research is trying to answer the question by comparing actual road maintenance cost of two roads with same characteristics, while one is PBC and the other is traditional contract. The result shows that in one case PBC is cheaper than traditional contract, while the other case shows the opposite.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.33599
      Issue No: Vol. 27, No. 1 (2021)
  • Reservoir sedimentation regime analysis: case study of Kedungombo
           reservoir and Sermo reservoir

    • Authors: Indri Rahmandhani Fitriana, Djoko Legono, Heriantono Waluyadi
      Pages: 80 - 87
      Abstract: The Kedungombo and the Sermo Reservoirs have problems in fulfilling basic services because of sedimentation. Sedimentation that occurs in each of the reservoirs would form a specific reservoir sedimentation pattern that is supposed to be similar because the hydrology and physiography conditions of the reservoir's catchment area are similar. This study aims to determine the dynamics of sedimentation patterns that occur in the dead storage for reviewing the characteristics/sedimentation regime of the two reservoirs. The analysis was carried out by processing bathymetrical data which were processed into a digital terrain model (DTM) using ArcGIS. Furthermore, the storage volume, sedimentation volume, storage percentage, and specific reservoir sedimentation rate are calculated. The results showed that the two reservoirs showed an increase in sedimentation volume each year so that the reservoir characteristic curve shifted from the plan graph. The dead storage capacity of Kedungombo Reservoir is 100% in 1989 to 43% in 2016 and 100% of Sermo Reservoir in 1997 to 58% in 2011. The specific reservoir sedimentation rate, i.e. 0.0031 and 0.0042 million m3/year/km2 for the Kedungombo Reservoir (between 1989 and 2016) and the Sermo Reservoir (between 1997 and 2011) respectively, indicating that the two reservoirs are in the same regime
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.35978
      Issue No: Vol. 27, No. 1 (2021)
  • Trajectory Stress and Angle Values Correlation to Deep Beams Dimensional

    • Authors: Kukuh Cahya Adi Putra, Yulita Arni Priastiwi, Sukamta Sukamta
      Pages: 88 - 96
      Abstract: SNI 2847-2019 defines a deep beam as a structural component that is loaded on one side and supported on the opposite face, allowing compressive components such as struts to form between the loads and supports. It is also stated that the ratio of the net span of the beam to the height of the beam must match the standards (l/h) 4. The goal of this investigation is to determine the value of the stress’s correlation and the trajectory angle to the ratio of the l/beam h's with a span of 4 meters when subjected to a point load of P = 2,000 kN. In the analysis procedure, SAP v.14 is being used to determine the value of stresses and trajectory angles of variations l/h. The results obtained from this study is ratio of l / h of deep beam affects the magnitude of the stress and the angle of the trajectory. Increasingly the width of the beam has no significant effect on the resulting trajectory angle.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.30591
      Issue No: Vol. 27, No. 1 (2021)
  • Effect of Shape Modification on I Girder and Box Girder Prestressed
           Concrete to Stiffness and Displacement

    • Authors: Hakas Prayuda
      Pages: 97 - 106
      Abstract: Prestressed concrete has been widely used in structural buildings, especially for big span length purposes. The prestressed concrete dimension cross sections normally are fixed, provided by the factory based on their experience for every span length. However, this size aspect can be developed to make better improvement. In this study, I and box girder shapes were modified with the same total cross-sectional area. Three types of modification have been made for each girder shape by giving the space on the middle for I girder and changing form from trapezoidal to rectangular section for box girder. The number of steel tendons for this research was made typically and same so that the stress and displacement can be compared fairly. Manual calculation was performed for all samples and was completed under three circumstances namely initial condition, loading condition, and final condition. Also, the manual calculation is according to Indonesian provisions, which are SNI 2833-2016 for the earthquake load and SNI 1725-2016 for normal loading on bridges. From the result, it is known that one shape for each girder shape has met the criteria for the smallest stress and displacement.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.26069
      Issue No: Vol. 27, No. 1 (2021)
  • Three Dimensional Analysis of Pile-raft Foundations on Clay,

    • Authors: Evelyn Jogiadinata, Paulus Pramono Rahardjo, Aswin Lim
      Pages: 107 - 117
      Abstract: Piled-raft foundation is a combination of pile foundation and raft foundation. Bearing capacity of piled-raft foundation yielded from contribution of both pile capacity and raft capacity. Most of the time, design of pile foundation is assumed that all load is solely carried by pile and the capacity of raft is ignored. In this study, three-dimensional finite element analysis was applied to analyze the load percentage that can be carried by raft. A case study, which is located in Central Jakarta, Indonesia, was modeled to investigate this issue. This project was instrumented with two pressure cells where the data were used to verified the model and the load distribution. The analysis results showed good agreement with the measurement data, where the load carried by the raft is around 33-42%.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.27923
      Issue No: Vol. 27, No. 1 (2021)
  • Developing Floating Constructed Wetland in Laboratory Scale as Domestic
           Waste Contaminant Reductor in Urban Waters

    • Authors: Rian Mantasa Salve Prastica, Muhammad Sulaiman
      Pages: 118 - 126
      Abstract: Low awareness of sanitation of urban citizens creates negative effects on the environment which varied. The triggering factors of the phenomenon are education and conservation technology. A conservation technology, eco-technology e.g. constructed wetlands, is proposed to solve the problem. Laboratory work is conducted to obtain comprehensive analysis about floating constructed wetland. The research paper aims to illustrate the efficiency performance of constructed wetlands, with domestic species, in the lab-scaled area from urban wastewater. The constructed wetland media is prepared horizontally. The analysis of its performance leads to a discussion of urban water quality. Samplings and laboratory tests are conducted to examine pH, phosphorus, nitrogen, suspended solids, conductivity, COD, and BOD. The benefit of Nasturtium officinale as FTW media reduce phosphate, nitrate, and BOD as 100% in 14 days. The discharge simulation during 14 days reduce TDS and TSS as 100%.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.26404
      Issue No: Vol. 27, No. 1 (2021)
  • Fly ash from Coal-Combustion Waste as an Additive for Quality Improvement
           and Compressive Strength of Cement

    • Authors: Roni Adi Wijaya, Yayuk Astuti, Septi Wijayanti
      Pages: 127 - 134
      Abstract: A series of tests were carried out to determine the effect of the addition of coal combustion fly ash as an additional mineral (additive) on improving the quality and compressive strength of cement according to the Indonesian National Standard (SNI 15-2049-2004). Research methods include sample preparation, manufacture of cement with 0%, 5%, 8%, 12%, and 15% fly ash variations, chemical and physical properties of cement. The parameters measured were the level of chemical composition (%) using X-Ray Fluorescence Spectroscopy (XRF) ARL 9800 OASIS, free lime content (%) by volumetry, insoluble residue level (%) by gravimetry, compressive strength (kg/cm2), and smoothness cement (cm2/g). The results showed that the addition of fly ash increased the SiO2 content of cement, thereby increasing C3S and C2S compounds which are compressive strength components of a cement. Besides, the addition of fly ash is directly proportional to IR levels, compressive strength, smoothness, and inversely proportional to free lime levels. So the addition of fly ash can improve the quality of cement by increasing chemical components, increasing compressive strength, and reducing cracking or expansion of cement.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.31558
      Issue No: Vol. 27, No. 1 (2021)
  • Effect of Addition Polypropylene Fiber on Compressive Strength and
           Permeability Values in Porous Concrete

    • Authors: Wira Rante Paganggi, Amelia Makmur, Rachmansyah Rachmansyah
      Pages: 135 - 142
      Abstract: The infrastructure growth has an impact on reducing green areas, which will be followed by reduced water catchment areas. Porous concrete is one of the porous materials that can be used on a pedestrian walk, which is able to drain water. The porous concrete has a limitation strength. This research aims to determine the effect of using various content of chemical additive and polypropylene fibers for porous concrete mixtures related to the compressive strength and permeability values. This experimental method referring to ACI 522R-10 Standard. That specimens using chemical additives and variations of polypropylene fibers: 0.05%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of cement. The results showed that the specimen which had the highest compressive strength was 16.9 MPa, which was added 0.25% polypropylene fiber. The addition of polypropylene fibers increases the compressive strength value by 5.6%. Based on the compressive strength and permeability graphs, it can be estimated that the optimal content of polypropylene fiber is 0.17% by weight of cement.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.31536
      Issue No: Vol. 27, No. 1 (2021)
  • Vehicle Trajectory Test on Interlocking Pavement Made From No Fine
           Agregate Concrete

    • Authors: Adityo Budi Utomo, Bhima Dhanardono, Laely Fitria Hidayatiningrum
      Pages: 143 - 150
      Abstract: In rainy season, many cases of roads being submerged in water because of a lack of drainage capacity and low water absorption by the subgrade. This study makes no fine aggregate concrete as an interlocking pavement to increase water absorption to the drainage layer and subgrade. No fine aggregate concrete is made from mix of cement : coarse aggregate = 1 : 6 with water cement ratio 0,4. The results showed the value of specific gravity, water absorption, compressive strength, and Na2SO4 resistance are 1,703 gr/cm3, 2.57%, 10.8 MPa, and 0.79%. To see the level of interlocking pavement performance, no fine aggregate concrete  is arranged above the drainage layer and the levelling layer, and then a trajectory and inundation test is performed. The result of inundation and trajectory tests shows that interlocking pavement can pass water to subgrade without inundation and can withstand the wheel loader that is equivalent to 13,000 kg so that it can be used for sidewalks, park lanes, and pavement with a maximum axle load of 8 tons.
      PubDate: 2021-08-20
      DOI: 10.14710/mkts.v27i1.27387
      Issue No: Vol. 27, No. 1 (2021)
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