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Journal of Mechanical, Civil and Industrial Engineering
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  This is an Open Access Journal Open Access journal
ISSN (Online) 2710-1436
Published by Al-Kindi Center for Research and Development Homepage  [14 journals]
  • Analysis of Coal Combustion Characteristics of PT. Prolindo cipta
           Nusantara Sungai Loban District, Land Bumbu Regency, South Kalimantan
           Province

    • Authors: Deddy NSP Tangga, Widi Novianti , Yossa Yonathan Hutajulu
      Pages: 01 - 06
      Abstract: Indonesia is one of the countries with the most significant coal mining resources globally. Its reserves are estimated at 36,3 billion tonnes. It is just that 50-85% low quality. So in this study, researchers can determine the characteristics of coal combustion and coal rank for its utilization by using a Thermogravimetry Analyzer (TGA). The method used in this study is quantitative. Wherein this quantitative method, the researcher will analyze the TGA/DTA graph, which results from laboratory testing. This quantitative method is used to obtain coal combustion characteristics by observing changes in temperature and time in the coal mass. The research results on the characteristics of coal combustion are that the calculation of the activation energy of PCN 1 coal is 9932,9 Btu/lb, and PCN 2 coal is 10270,2 Btu/lb. Based on the results of this study, it is known that PCN 1 and PCN 2 coal are included in sub-bituminous coal B, so their use is for power generation, cement production, and industrial use.
      PubDate: 2022-04-14
      DOI: 10.32996/jmcie.2022.3.2.1
      Issue No: Vol. 3, No. 2 (2022)
       
  • Analysis of Compressive Strength of Sulfur Concrete

    • Authors: Eri S. Romadhon, Achmad Hanif
      Pages: 07 - 16
      Abstract: One of the best concrete mixes to reduce environmental impact is using sulfur concrete. The use of sulfur, as a waste material for enterprises, for the production of building materials is efficient due to the disposal of waste and its contribution to environmental protection. Sulfur concrete material has high compressive strength, low hydraulic conductivity, and high resistance to water permeation and is particularly resistant to corrosion in acid and salt environments. Sulfur concrete is more resistant to corrosion. Waterproofing reduces fatigue under repetitive load, develops strength very high start, fast hardens, saves time to manufacture, and holds to an aggressive environment. The aims of this study were 1) To determine the compressive strength of sulfur-bonded concrete with an aggregate ratio, 2) To determine the compressive strength of concrete based on the percentage of sulfur binding material from the combined aggregate weight and specific gravity of the concrete 3) To determine the strength of the sulfur-bonded concrete with a maximum age of 28 days. The research method used is an experimental method based on calculating the density of concrete specimens and the volume of the mould for sulfur concrete specimens. The results showed that 1) the best percentage of mixed material was aggregate fine and coarse 40%: 60%. 2) With use pro percentage sulfur 25%, 27.5%, 30%, 32.5%, 35%, 37.5% and 40% of heavy aggregate combined and weight type concrete 2400 kg/m3. 3) Research results obtained maximum strength sulfur concrete 28 days old of 429.5 kg/cm2 at 32.5% sulfur percentage and the lowest 250.5 kg/cm2 at the percentage of sulfur 25%.
      PubDate: 2022-05-31
      DOI: 10.32996/jmcie.2022.3.2.2
      Issue No: Vol. 3, No. 2 (2022)
       
  • Finite Element Analysis on Hydroforming of CFRP/SS304 Composite Tube with
           different Fiber Orientation Stacking Sequence

    • Authors: Felix Thompson Eshun, Talent CT Rupango, Wesley I. Umoren
      Pages: 17 - 23
      Abstract: In this paper, a finite element-based approach to the tube hydroforming process of SS304/CFRP material with different stacking sequences was performed in an effort to reveal the failure phases at different stacking angles. The effort to produce hybrid composite tubes through tube hydroforming with composite reinforcement resulted in laminate failure at all the proposed fiber orientation angles. A comparative study of strain energy dissipation at these different stacking angles is further presented. The results show that the 00/900 stacking is considered the strongest stacking angle requiring the least strain energy absorption to initial failure of approximately 50 % more as compared to the ±300 and ±600 stacking angles. The proposed method was more adequate for predicting the strain energy, matrix deformation, and fiber damage when simulating the events.
      PubDate: 2022-08-04
      DOI: 10.32996/jmcie.2022.3.2.3
      Issue No: Vol. 3, No. 2 (2022)
       
 
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