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All Journal Jurnal Lentera Pendidikan Pusat Penelitian LPPM UM Metro Jurnal Suluh Pendidikan Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Jurnal Tatsqif Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Journal of Research and Inovation in Civil Engineering as Applied Science Jurnal Inovasi Pendidikan Sains dan Terapan JEAS Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Journal of Green Science and Technology
Kamil, Firmanilah
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Transportation Other

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Journal : Journal of Green Science and Technology

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Material Testing for The Development of Environmentally Friendly Concrete With Conventional Aggregate Substitutes Kamil, Firmanilah; Purnomo, Julyan
Journal of Green Science and Technology Vol 8 No 2 (2024): Journal of Green Science and Technology Vol.8 No.2 September 2024
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v8i2.9577

Abstract

In Ketapang District, there is potential to reduce the environmental impact of concrete production by utilizing local agricultural waste. This study aims to determine the comparison between the physical properties of coconut fiber and palm kernel shells as aggregate substitutes in concrete, with the physical properties of conventional aggregates such as sand and crushed stone. Coconut coir came from tourism waste in Ketapang Regency, while palm kernel shells were taken from the waste of the local palm oil processing industry. Laboratory tests were conducted to compare the physical properties of coconut fiber and palm kernel shell with conventional aggregates, namely sand and crushed stone. The test results showed significant differences. Coconut husk had a specific gravity of 1.19 and palm kernel shell 1.59, compared to sand 2.09 and crushed stone 2.81. The moisture content of palm kernel shell (17.40%) was much higher than that of crushed stone (1.15%), while the water absorption of palm kernel shell reached 37.16%, far above the water absorption of crushed stone (4.05%). Coconut husk and palm kernel shell have lower specific gravity than conventional aggregates, making them ideal for lightweight concrete. However, the high water absorption of palm kernel shells requires adjustments to the concrete mix design. This study shows that the use of local waste materials can contribute to the development of environmentally friendly concrete, but careful composition control is required to maintain concrete performance. Keyword: aggregate, concrete, material testing.
Utilization of Power Plant and Agricultural Waste as A Cement Substitute on The Compressive Strength of Environmentally Friendly Concrete purnomo, julyan; kamil, firmanilah
Journal of Green Science and Technology Vol 9 No 1 (2025): Journal of Green Science and Technology Vol. 9 No. 1 March 2025
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v9i1.9619

Abstract

This study aims to assess the effect of using Fly Ash and Rice Husk Ash as cement substitutes in the manufacture of environmentally friendly concrete. Fly Ash, a waste from coal-fired power plants, and Rice Husk Ash, an agricultural waste, were used as partial cement substitutes in four concrete mix variations, viz: normal concrete without substitution (N), concrete with 20% Fly Ash (K), concrete with a combination of 10% Fly Ash and 10% Rice Husk Ash (L), and concrete with 20% Rice Husk Ash (M). The compressive strength test was conducted at the age of 7 days, 14 days, and 28 days. The results showed that concrete with 20% Fly Ash (K) produced the most optimal compressive strength, especially at longer concrete ages. Concrete with Rice Husk Ash substitution (M) and a combination of Fly Ash and Rice Husk Ash (L) showed lower compressive strength than normal concrete (N) and Fly Ash alone. Therefore, the use of Fly Ash at 20% gave the best compressive strength results among the variations tested. Keyword: Cement Substitution, Compressive Strength, Eco-friendly concrete, Fly Ash, Rice Husk Ash
Co-Authors Alan Putranto Darmanto Darmanto Dian Wahyuni Dwi Hastuti, Ningrum Efendi, Uti Rustam Faisal, M.Hanif Harahap, Saima Putrini R Harsusani, Harsusani Iswandi, Agung Jayawarsa, A.A. Ketut Kalsum, Syf Umi Karlina, Vevie Kurnila, Nely Martanto . Mastura, Syf Nasfadilla, Yolanda Nova Zulfahmi, A. Nur Aida Purnomo, Julyan Ravi, Ahmad Siregar, Riska Febriana Suratmin Suryansyah, Suryansyah