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All Journal Techno: Jurnal Penelitian JURNAL SIPIL SAINS DINTEK Journal of Science and Engineering Jurnal Serambi Engineering Jurnal Abdi Insani Jurnal Ilmiah Wahana Pendidikan Archipelago Engineering INTERNATIONAL JOURNAL OF EDUCATION, INFORMATION TECHNOLOGY, AND OTHERS Jurnal Teknik Silitek CLAPEYRON: Jurnal Ilmiah Teknik Sipil Journal Serambi Engineering (JSE)
Fitro Darwis
Universitas Pasifik Morotai
Religion Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Transportation Other

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Journal : Serambi Engineering

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Pengaruh Substitusi Pasir Besi Morotai Sebagai Agregat Halus Terhadap Kuat Tekan, Kuat Lentur dan Penyerapan Air Batako Elfira Resti Mulya; Anggriyawan Djafar; Fitro Darwis
Jurnal Serambi Engineering Vol. 9 No. 4 (2024): Oktober 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Iron sand, a natural resource found on Morotai Island, has not been fully exploited, unlike beach sand, which is commonly used as a building material for local bricks. However, the exploitation of beach sand may lead to beach erosion on the island. This research aims to investigate the effect of using iron sand as a partial replacement for fine aggregate in bricks on compressive strength, flexural strength and air absorption. The experimental method was carried out in the laboratory with variations in iron sand substitution ranging from 0% to 25% at 5% intervals. The results indicate that iron sand substitution can significantly affect the compressive strength, flexural strength and air absorption of the bricks. Bricks with 25% iron sand substitution showed a 75.23% increase in compressive strength, reaching 9.48 MPa. In addition, the flexural strength of bricks with 25% iron sand substitution increased by 4.66 MPa compared to bricks without substitution, an improvement of 12%. Furthermore, the air absorption test showed that the 25% iron sand substitution reduced the water absorption of the bricks by up to 25.21%. This suggests that a higher percentage of iron sand replacement in the bricks results in a lower water absorption capacity.
Inovasi Teknologi Perkerasan Jalan Beton Menggunakan Abu Vulkanik Dukono dan Kapur Sebagai Substitusi Semen Mulya, Elfira Resti; Goraahe, Siti Hadija; Darwis, Fitro
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Road construction in Indonesia is increasing every year, including in Morotai, North Maluku. Low traffic can use rigid pavement technology or cement concrete pavement. Regional roads to connect various areas in the region such as industrial and tourism areas, agricultural areas and regional productivity. The purpose of this study is to determine the strength of concrete using Dukono volcanic ash and lime as a cement substitute as a technological innovation in concrete road pavement. This research method is an experimental method, where experimental testing is carried out in the Laboratory to determine concrete with a substitution of Dukono volcanic ash and lime for cement. Concrete strength tests carried out include compressive strength tests and split tensile strength tests. The results of the study showed that the concrete compression test with a variation of 15% volcanic ash and 5% lime had a compressive strength value of 351.45 kg / cm2, an increase in the compressive strength value of 16.5% from the planned concrete compressive strength, and for 20% ash and 5% lime an increase of 4.36%. For concrete road pavement, the use of volcanic ash and lime can be a solution for regional road pavement. Because at a percentage of 15% volcanic ash with 5% lime as a cement substitute, it results in an increase in concrete compressive strength of 16.5% at K-300.
Co-Authors Aminullah Thaib Amir Sultan, Mufti Anggriyawan Djafar Arbain Tata Aswin Laaha Bambang Hariyanto Chairul Anwar Demi Sidogu Elfira Resti Mulya Embe Seng Hartati Kapita Idrus, Sukarmin Ikbal, Mardiana Kusman, Muhammad Reza Kusnadi M Asril Bakir Maujud Popa Miswar Papuangan Mufti Amir Sultan, Mufti Amir Muhammad Haykal Muhammad Reza Kusman Siti Hadija Goraahe Sofyan Djafar Suparman Utokoy Titien Sofiati Walid Mododok