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All Journal Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Afrie Nardiansyah
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Humanities Education Languange, Linguistic, Communication & Media Mathematics Other

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Pengaruh Besar Besar Butiran Agregat Kasar terhadap Kuat Tekan Beton Normal: Penelitian Shidik Permana; Afrie Nardiansyah
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 1 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 1 (Juli 2025 -
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i1.1592

Abstract

This study aims to determine the effect of variations in coarse aggregate sizes on the compressive strength of normal concrete with a target strength of f’c 20 MPa. Three types of coarse aggregates were used in the concrete mix: 10–20 mm, 20–30 mm, and a combination of both. The research was conducted at PT. Karya Adi Kencana Laboratory using a quantitative experimental method. Cylindrical specimens were tested at the age of 7, 14, and 28 days to measure compressive strength. The results showed that all aggregate variations achieved compressive strength exceeding 100% of the planned strength (20 MPa) at 28 days. The 10–20 mm aggregate produced the highest strength at 109.3%, followed by 20–30 mm at 107.65%, and the combined aggregate at 106.15%. These findings indicate that smaller aggregate sizes provide better compaction and interparticle bonding, leading to higher concrete strength. The results are consistent with previous studies by Hujiyanto et al. (2024), Hermawati (2023), and Ifantri Sugiono (2023), which state that the maximum size of coarse aggregate significantly affects concrete strength. Utilizing 10–20 mm local aggregates is proven to be an effective and economical option for producing high-quality concrete.
Analisis Pecahan Batu Bata Merah Sebagai Pengganti Agregat Halus Dalam Campuran Beton Ringan: Penelitian Dwi Aditya Yanuar; Afrie Nardiansyah
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 1 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 1 (Juli 2025 -
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i1.1975

Abstract

The excessive exploitation of natural sand has caused environmental impacts, thus innovation is needed in utilizing environmentally friendly alternative materials for construction. One such alternative is the use of red brick waste as a partial substitute for fine aggregate in concrete mixtures. This study aims to determine the compressive strength of concrete using 50% red brick waste as a replacement for fine aggregate. The research method used an experimental approach with two types of mixtures: normal concrete and concrete with 50% red brick substitution. Compressive strength tests were conducted at 7, 14, and 28 days of curing. The results showed that normal concrete achieved 73%, 87.55%, and 105.35% of the design strength (fc’ = 20 MPa), while the concrete with 50% red brick substitution reached only 63.1%, 76.2%, and 91.5%. The red brick concrete showed lower compressive strength compared to normal concrete, but its strength continued to increase consistently over time. These results indicate that red brick waste has potential as an alternative fine aggregate, especially for non-structural applications.
Co-Authors Dwi Aditya Yanuar Shidik Permana