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All Journal The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning)
Muttaqin Hasan
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Civil Engineering, Building, Construction & Architecture Transportation

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ANALISIS FAKTOR-FAKTOR PENERAPAN LEAN CONSTRUCTION PADA PROYEK KONSTRUKSI GEDUNG DI KOTA BANDA ACEH Zulhelmi Andika; Muttaqin Hasan; Abdullah Abdullah
Jurnal Arsip Rekayasa Sipil dan Perencanaan Vol 5, No 2 (2022): Jurnal Arsip Rekayasa Sipil dan Perencanaan
Publisher : Prodi Magister Teknik Sipil Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jarsp.v5i2.25478

Abstract

Lean construction is a construction implementation method that can minimize waste and maximize value. In the implementation of building construction projects, especially in Banda Aceh City, there are still many contractors who stick to conventional implementation methods, although the government has introduced lean building methods. Traditional methods tend to produce waste and neglected value. This study aims to determine the dominant lean construction factors applied to building construction projects in Banda Aceh City. Construction using funds from the City's Revenue and Expenditure Budget (APBK) years of 2015-2021. Respondents in this study were targeted at project managers/construction managers from medium and high-skilled contractors in Aceh province with a population of 1,610 companies. A proportionally stratified random sample is used as the sampling method and 165 companies were selected as samples. The data analysis technique used descriptive statistics, validity test, reliability test, and Principal Component Analysis (PCA) using Statistical Product and Service Solution (SPSS) software. The results showed that the lean construction factors applied to building construction projects in Banda Aceh City included 7 factors namely the implementation method, material control, supply chain, time management, documentation, teamwork, and communication factors with a  variance (percentage of application) of 61.770%. The dominant lean construction factor applied to building construction projects in Banda Aceh is the implementation method factor, with a variance of 17.593%.
STUDI PERILAKU LEKATAN ANTARA BETON DAN NATURAL FIBER REINFORCED POLYMER (NFRP) DENGAN UJI LEKATAN GESER Muhammad Azwar; Taufiq Saidi; Muttaqin Hasan; Zahra Amalia
Jurnal Arsip Rekayasa Sipil dan Perencanaan Vol 5, No 2 (2022): Jurnal Arsip Rekayasa Sipil dan Perencanaan
Publisher : Prodi Magister Teknik Sipil Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jarsp.v5i2.25081

Abstract

Reinforcement and repair of reinforced concrete structures using Fiber Reinforced Polymer (FRP) composites have been widely used. However, the high price is one of the obstacles to applying it. Utilization of natural fiber as a Natural Fiber Reinforced Polymer (NFRP) composite material is an alternative because, in addition to its abundant availability in nature, natural fiber also has low specific gravity, is environmentally friendly, and has a more economical production cost. In this study, natural fibers were used as a substitute for synthetic polymer fibers for strengthening and repairing reinforced concrete structures. This study aims to determine the bond strength between concrete and NFRP. The benefit of this research is to provide an overview of the behavior of the bonding strength of NFRP so that it can be applied to the reinforcement and repair of reinforced concrete structures. The bond strength behavior between concrete and NFRP was tested experimentally. The parameters used were the type of natural fiber (abaka, ramie, pineapple, Samia's silk), the type of adhesive (epoxy, polyester, thixotropic epoxy), and the number of layers of fiber. The test object used the form of a beam (100x100x300) mm and has a single reinforcement of 10 mm in the middle of the cross-section. The width of the NFRP is 50 mm with a bond length of 120 mm. Strain gauges are used on NFRP every 50 mm. In addition, strain gauges are also installed on reinforcement and concrete. A result, NFRP bonding can increase the tensile strength capacity of reinforced concrete beams. Bonding of type-b abaca fiber composite with polyester adhesive is the composite that gives the most significant increase in tensile strength capacity. The Beams with three-layer type-b abaka composite bonded with polyester adhesive experienced the highest increase in tensile strength capacity reaching 47.25%. The results of this study indicate the potential of NFRP as a retrofitting method and further research is needed so that it can be applied to reinforced concrete structures.
Co-Authors Abdullah Abdullah Muhammad Azwar Taufiq Saidi Zahra Amalia Zulhelmi Andika