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All Journal Jurnal Linears Rancang Bangun Astonjadro Jurnal Abdi: Media Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Teknik Sipil UMS
Amar, Tsulis Iq'bal Khairul
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Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Engineering Languange, Linguistic, Communication & Media Social Sciences Transportation Other

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Journal : Astonjadro

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Optimizing the Use of Recycled Materials in Environmentally Friendly Concrete Block Production Amar, Tsulis Iq'bal Khairul; Magfirona, Alfia; Rosadi, Dheaulhaq; Putri, Nabila Faisa
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17348

Abstract

The construction industry significantly impacts the environment through resource consumption and carbon emissions. This study explores environmentally friendly concrete block production using recycled materials to address these challenges. By incorporating waste materials such as Styrofoam (X1), HVS paper (X2), and Onggok Aren fiber (X3), this study aimed to reduce landfill waste and lower carbon emissions. Our research shows that these materials can be effectively used in concrete block production, meeting required standards. However, high initial production costs remain a barrier. Effective cost modeling and optimization, using linear programming, showed that production costs for blocks made from Styrofoam (X1), HVS Paper (X2), and Onggok Aren Fiber (X3) could be significantly reduced. The optimized costs were Rp 1,804.26 for Styrofoam (X1), Rp 3,500 for HVS Paper (X2), and Rp 4,000 for Onggok Aren Fiber (X3) per block. By incorporating a 30% profit margin, the selling prices were set at Rp 2,345.54 for Styrofoam (X1), Rp 4,550 for HVS Paper (X2), and Rp 5,200 for Onggok Aren Fiber (X3). This approach ensures market competitiveness and sustainable profitability, promoting the use of alternative materials in construction and advancing environmental sustainability.
DELAY ANALYSIS USING IN-DEPTH INTERVIEW METHOD: CASE STUDY POST-DISASTER RECONSTRUCTION IN LOMBOK Amar, Tsulis Iq'bal Khairul; Saputri, Utamy S; Rozandi, Ardin
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6702

Abstract

Earthquake disasters have a significant impact, especially on infrastructure, socio-economy, and housing. In August 2018, there were earthquakes in Lombok; the Government then issued a reconstruction policy, especially in the housing sector. In the worst affected areas in North Lombok, the reconstruction process is targeted to be completed in March 2019, but as of February 2020, at least 7,210 houses have not been constructed. Further discussion is needed to determine the delay factors in post-disaster housing reconstruction. A qualitative approach was chosen to emphasize the benefits and information gathering by exploring the phenomenon under study. Seven informants from representatives of the Government, facilitators, and the community were selected to be interviewed regarding the delays. The data analysis used in this study used a descriptive approach by categorizing the results of the interviews according to previous research and experts. Thus, data analysis was found five issues of delay that are closely related to communication and coordination, human resources, materials and supplies, workmanship and quality, and monitoring.
Co-Authors Achintya, Helsa Utra Alfia Magfirona Amaristyanto, Yoga Fresti Febria Astuti Maharani, Mentari Putri Muhammad Luthfi Puspaningrum, Farah Annisa Shela Putri, Nabila Faisa Ramandha, Syntia Rofiyantama, Dega Rosadi, Dheaulhaq Rozandi, Ardin Saputri, Utamy S Vivi Tri Wulandari Widiastuti, Septia