PENGARUH ABU KULIT KOPI SEBAGAI BAHAN TAMBAH TERHADAP KUAT TEKAN DAN KUAT TARIK BETON
Abstract
Penelitian ini melakukan Pengujian kuat tekan dan kuat tarik belah beton dilakukan dengan penambahan abu kulit kopi sebesar 0%, 7,5%, 10%, dan 12,5% dari berat semen. Pengujian beton dilaksanakan pada umur 28 hari. Kuat tekan rata-rata beton normal sebesar 26,42 MPa, campuran 7,5% abu kulit kopi sebesar 22,87 MPa, campuran 10% abu kulit kopi sebesar 21,80 MPa, dan campuran 12,5% abu kulit kopi sebesar 18,34 MPa. Kuat tarik belah rata-rata beton normal sebesar 2,06 MPa, campuran 7,5% abu kulit kopi sebesar 1,99 MPa, campuran 10% abu kulit kopi sebesar 2 MPa, dan campuran 12,5% abu kulit kopi sebesar 1,66 MPa.
Concrete is a mixture of Portland cement or other hydraulic cement, fine aggregate, coarse aggregate and water, with or without additional ingredients that form a solid mass (SNI 2847-2013). The concrete production process involves the large-scale use of cement as the main binding agent. The cement industry accounts for the majority of global greenhouse gas emissions, making it one of the main sectors contributing to climate change. In an effort to reduce the environmental impact of the construction industry, especially concrete production, research needs to be carried out to find other alternatives for creating concrete that is environmentally friendly and based on renewable resources. One interesting alternative is the use of coffee husk ash waste as an additive to concrete.
This research tested the compressive strength and split tensile strength of concrete with the addition of coffee husk ash at 0%, 7.5%, 10% and 12.5% of the cement weight. Concrete testing was carried out at the age of 28 days. The average compressive strength of normal concrete is 26.42 MPa, a mixture of 7.5% coffee skin ash is 22.87 MPa, a mixture of 10% coffee skin ash is 21.80 MPa, and a mixture of 12.5% coffee skin ash is 18 .34 MPa. The average split tensile strength of normal concrete is 2.06 MPa, a mixture of 7.5% coffee husk ash is 1.99 MPa, a mixture of 10% coffee husk ash is 2 MPa, and a mixture of 12.5% coffee husk ash is 1. 66 MPa.
Keywords
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DOI: http://dx.doi.org/10.33087/civronlit.v11i2.203
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Jurnal Civronlit Unbari
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