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Penggunaan Agregat Sungai Radda Kecamatan Masamba Kabupaten Luwu Utara Sebagai Campuran Beton Yenni Sri Agesya Kapuangan; Junus Mara; Olan Jujun Sanggaria
Paulus Civil Engineering Journal Vol. 7 No. 2 (2025): Paulus Civil Engineering Journal V7N2 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/hms0b619

Abstract

The Radda River has aggregates with non-uniform grain distribution, clean, and visually seen with clear river flow. However, it is not yet known whether the Radda River aggregate can be used as structural concrete. This study was conducted to determine the compressive strength, flexural strength, splitting tensile strength of concrete and modulus of elasticity of concrete using aggregates from the Radda River. This study used the SNI 7656-2012 concrete design method with concrete quality f'c 25 MPa and 32 MPa through slump test on 28-day-old concrete. The average splitting tensile strength value of f'c 25 MPa concrete is 3.017 MPa. The average splitting tensile strength value of f'c 27 MPa concrete. The average flexural strength of f'c 25 MPa concrete is 3.759 MPa. The average flexural strength of f'c 32 MPa concrete is 4.176MPa. The results of the elastic modulus test for quality f'c 25 Mpa are 18,713.811 MPa. Theoretical value = 4700 x √25 = 23,500 MPa. The results of the elastic modulus test for quality f'c 32 Mpa are 27673.21667 Mpa. Aggregates from the Radda River can be used to achieve a quality of 25 MPa and 27 MPa using a material composition of 32 MPa.
Penggunaan Agregat Sungai Walanae Kabupaten Wajo Sebagai Bahan Campuran Beton Gita Yasty Palimbong; Junus Mara; Olan Jujun Sanggaria
Paulus Civil Engineering Journal Vol. 7 No. 3 (2025): Paulus Civil Engineering Journal V7N3 2025
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/abn6m433

Abstract

Concrete is one type of construction material that is generally used for building projects, bridges, roads, and other buildings. The Walanae River in Wajo Regency is one of the rivers that produces materials in the form of aggregate used by the local community, but there is no certainty that the aggregate can be used as a concrete mixture. The formulation of the problem in this study is based on the background that has been described, namely, whether the characteristics of concrete using the aggregate of the Walanae River in Wajo Regency are qualified as concrete construction materials. To conduct laboratory tests on concrete samples using aggregate from the Walanae River, Wajo Regency to determine compressive strength, tensile strength, bending strength, and modulus of elasticity. Testing of 25 MPa and 30 MPa plan quality samples. The test pieces used were 42 samples, compressive strength 24 samples, tensile strength 6 samples, bending strength 6 samples, and elastic modulus 6 samples. Based on the results of the 28-day concrete testing research for 25 MPa quality, achieving the planned quality was 25,455 MPa. The results of the 28-day concrete test for 30 MPa quality did not reach the planned quality obtained 27,152 MPa. Aggregate from the Walanae River can be used effectively in the production of concrete of a quality suitable for the structure.
Co-Authors Ari Kusuma Desi Sandy Dewo Mangiri Elia Kelin Ellen Kristin Pangloli Febriani, Lisa Fedelia Randan Gita Yasty Palimbong Helen A.I. Sopacua Herby Calvin Pascal Tiyouw Jeri Anditia. S Jerianus Tanning Lintje Tammu Tangdialla Loryanti Elsandi Paranggai Marlina Pasarong Meti Olan Jujun Sanggaria Parung, Herman Riski Christian Lumombang Tri Santi Yenni Sri Agesya Kapuangan