Fitrahul Hamdi, Muhammad (2023) Pengaruh Penggunaan Abu Cangkang Kerang Sebagai Bahan Pengganti Sebagian Semen Terhadap Kuat Tekan Batako Pada Jenis Pasir Yang Berbeda. Other thesis, universitas islam riau.

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Abstract

Adobe is a building component made from a mixture of portland cement or pozzolan, sand, water, and or other added materials (addictive), molded in such a way that it is qualified and can be used as a building material for wall pairs. This study used cast sand and urug sand. Based on (Irawan,2014) clam shell ash contains lime, aluminum oxide, and silica which allows it to be a partial substitution of cement. This study aims to determine the effect of using clam shell ash as an alternative material to replace part of cement on the compressive strength and ratio of cast sand clam shell ash and urug sand. This research was carried out by a compressive strength test method based on SNI-030349-1989. The test piece is cube-shaped with dimensions of 10.5 cm x 10.5 cm x 10.5 cm. The percentage of variation used is 5%, 10%, 15%, and 20%. The test used a 1:5 composition of a mixture of cement and sand. Compressive strength testing is carried out at the age of 28 days. The average compressive strength yield of bricks on cast sand and urug sand successively the percentage of variation of 0% cast sand and urug sand is 175.731 kg/cm 2 and 151.066 kg/cm 2 , respectively, at a percentage variation of 5% is 217.351 kg/cm 2 and 164.94 kg/cm 2 , at a percentage variation of 10% which is 300.229 kg/cm 2 and 180.355 kg/cm 2 , respectively, at a percentage variation of 15% which is 249.772 kg/cm 2 and 158.774 kg/cm 2 , and at a percentage variation of 20% which is 154,15 kg/cm 2 , and 135.652 kg/cm 2 . And the result of the ratio of the compressive strength of bricks using clam shell ash as a substitute for part of cement against cast sand is higher than the compressive strength of the use of urug sand with a percentage variation of 0%, 5%, 10%, 15%, and 20% respectively with successive differences of 16.33%, 31.78%, 66.39%, 57.31% and 13.64%. The conclusion is that the results of the compressive strength test above 10% have decreased and the largest comparison occurs in the percentage of 10% variation of 66.39%.

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