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Rang Teknik Journal
Published by Universitas Muhammadiyah Sumatera Barat
ISSN : 25992081     EISSN : 25992090     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering
RANG TEKNIK JOURNAL, merupakan Jurnal Penelitian dan Kajian Ilmiah yang diterbitkan Fakultas Teknik Universitas Muhammadiyah Sumatera Barat yang terbit 2 (dua) kali dalam setahun.
Arjuna Subject : -
Articles 23 Documents
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Search results for , issue "Vol 7, No 1 (2024): Vol. 7 No. 1 Januari 2024" : 23 Documents clear
BATAKO GREEN MATERIAL I Gede Yohan Kafrain; Hence Roring; Fenny Moniaga
Rang Teknik Journal Vol 7, No 1 (2024): Vol. 7 No. 1 Januari 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v7i1.4986

Abstract

In recent years, there has been a lot of development of wall materials derived from waste, such as husk ash waste, plastic bottle waste, plastic ore waste and fly ash waste. The aim of this research is to make bricks from plastic waste and fly ash waste but not using cement as a binder but using an alkali activator. By not using cement and using fly ash waste and plastic waste, this will reduce environmental pollution both due to cement production and plastic waste which has become a global problem. In this research, bricks were made by mixing plastic, fly ash and alkali activator as a binding agent. The mixture variations used are the ratio of plastic and fly ash with plastic content of 50%, 30% and 20%. In this research, the compressive strength of green material brick concrete was found to be 49.46 kg/cm2, 106.35 kg/cm2, and 125.29 kg/cm2 respectively. The weight of the green material bricks is 1.326 kg/cm3, 1.482 kg/cm3 and 1.502 kg/cm3. The water absorption of green material bricks is 8.29%, 6.49% and 5.36%. Based on SNI 03-0349-1989 green material bricks with a plastic content of 50% are included in quality III solid bricks, while those with plastic content of 30% and 20% are included in quality I solid bricksKeywords: Brick, Plastic, Fly Ash, Green Material
PENGARUH PENAMBAHAN KAPUR PADA SEMEN GEOPOLIMER TERHADAP MORTAR GEOPOLIMER Ega Maryenttry; Firdaus Firdaus; Wanda Yudha Prawira
Rang Teknik Journal Vol 7, No 1 (2024): Vol. 7 No. 1 Januari 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v7i1.4753

Abstract

Concrete is widely used to build infrastructure, with the increasing use of cement in Indonesia causing Portland production to increase and have a negative impact on the environment. This is because in the cement production process the combustion results release CO2 which is released directly into the air. Therefore we need another alternative that can replace cement. This study aims to analyze the effect of adding lime to geopolymer cement on geopolymer mortar. From the results of this study, the effect of the addition of lime was very influential on the compressive strength value at the age of 28 days, the addition of lime with a percentage of 1%, 2%, 3%, and 4% in each percentage at the age of the test object 28 days. The highest compressive strength value in the addition of lime was obtained at a percentage of 4% with w/c 0.30 at the age of 28 days with a compressive strength of 1.6 MPa, and in the percentage of using lime the lowest compressive strength could be at a percentage of 1% with a w/c of  0.45 with a compressive strength of 1.2 Mpa.
ANALISIS PENGARUH KEHALUSAN ABU TERBANG (ABU SEKAM PADI) TERHADAP FLEKSIBELITAS DAN DURABILITAS AC-WC NR Farlin Rosyad; Agung Rahmatullah
Rang Teknik Journal Vol 7, No 1 (2024): Vol. 7 No. 1 Januari 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v7i1.4725

Abstract

Roads are an important and main foundation in moving the wheels of the public and territorial economy, considering their significant and main ability to support the appropriation of labor and products as well as the versatility of the population. Roads enable everyone to get services such as education, health care and employment. Asphalt What was used in this research was SIR 20 rubber asphalt (Standard Indonesian Rubber) which came from PT MBS (Modified Bitumen Sumatra). This research was carried out with the aim of finding out how much influence the fineness of rice husk ash as a fine material substitute has on the AC-WCNR coated asphalt concrete mixture in terms of durability and flexibility. And to find out what the optimum mixture value of rice husk ash is as a substitute for fine material in the AC-WCnr asphalt mixture. The percentage of Au content of rice husk used in research II is 3 variations 4%, 6%, 8%, and to use 4 zones, zone 0, zone 1, zone 2, zone 3 as a substitute for fine material mixed with AC-WC NR and test specimens normal without a mixture of rice husk ash. This research tested using the Marshall test method by reviewing the effect of rice husk ash on flexibility and durability. Based on the Marshall parameter test results in terms of zone variations and the percentage of substitution content for rice husk ash, the flow value can be concluded that the optimum value for using rice husk ash content in zone 2 is 4% variation, namely 3.74mm, and in zone 2, 8% variation has decreased by 3.50 mmm. The durability value of the mixture is seen from variations in the substitution level of rice husk ash, namely that the optimum variation in substitution for rice husk ash occurs in the 4% zone 2 variation, namely 96%.Keywords: Rice Husk Ash, Rubber Asphalt, AC-WC NR, Durability and Flexibility

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