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All Journal Astonjadro Jurnal Pensil : Pendidikan Teknik Sipil Sewagati
A'izzatul Khiyana
INDONESIA
Arts Humanities Civil Engineering, Building, Construction & Architecture Education Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Effect of Corrosion on Steel Strength (ST. 37) Sundari, Titin; Mutrofin, Akmam; Ramadhani, Rahma; Khiyana, A'izzatul; Yulianto, Totok; Nugroho, Meriana Wahyu
ASTONJADRO Vol. 13 No. 3 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i3.16577

Abstract

Rust on steel is often a problem in construction work. Rust occurs when iron oxidizes. The cause is prolonged exposure to water, air, or an acidic environment. Iron will bind oxygen atoms in the air to form iron oxide/rust. Rust continues to increase, accelerating the process of damage to buildings. Rust cannot be avoided, but it can control its rate. St.37 carbon steel is the most widely used material for various types of building construction. Therefore, it is necessary to carry out experimental tests regarding the rate of corrosion and its effect on the strength of steel. In this research, using St.37 steel plates, the corrosion process was carried out by leaving the specimens in an open space, immersing the specimens in sea water, and immersing the specimens in fresh water for 15 days. The aim of this research is to analyze the corrosion rate and its effect on the strength of St.37 carbon steel material. Based on the research results, the average corrosion rate of test plates in open spaces was 0 MPy with an extraordinary resistance category; soaked in sea water 14.76 MPy with good category; and soaked in fresh water 39.37 MPy with the fair category. Meanwhile, based on the tensile test results, the average strength was 560.8 MPa for objects, 510.4 MPa, and 492.8 MPa, respectively. This corrosion rate affects the strength of the steel, the greater the corrosion rate, the tensile strength of the steel plate decreases.
Implementation of Circular Economy Principles in Building Construction Waste Khiyana, A'izzatul; Suharyanto, Agus; Devia, Yatnanta Padma
ASTONJADRO Vol. 13 No. 1 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i1.14547

Abstract

Building projects often generate significant amounts of waste. This happens because the building projects mostly adopts a linear economic model of “take, make, dispose of”, using materials to the construction of buildings and disposing them at the end of life. This linear economic model only focuses on human activities because the disposal of materials ultimately does not become a sustainable practice in the future. For this reason, an alternative is needed in reducing and processing the construction waste by implementing circular economy principles. This study aims to identify type of construction waste in building project, provide recommendations for handling it with circular economy principles, and calculating the cost savings. The method that used in this study are field observation and interview for collecting data. The result showed that steel reinforcement, ready-mix concrete, light brick, ceramic, multiplex, spun pile, and anchor can be handled with circular economy principles are reduce, reuse, recycle, recovery, and repair. The cost savings from handled it in project A, B, and C are Rp. 68.252.490,65, Rp. 84.182.684,96, and Rp. 31.794.238,51, respectively.
Co-Authors Achmad Imam Agung Agus Suharyanto Imamatul Ummah Mayasari , Andhika Mutrofin, Akmam Nailul Izzati Nugroho, Meriana Wahyu Rahma Ramadhani Sundari, Titin Titin Sundari Totok Yulianto Yatnanta Padma Devia