Adu, Oktaviano Leonardo (2023) Pengaruh Ukuran Agregat Kasar Gabungan dan Faktor Air Semen terhadap Kuat Tekan dan Porositas Beton Non Pasir dengan Filler Keramik. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Concrete is a commonly used construction material. The need for concrete mix materials is also increasing, one of which is sand. If sand continues to be taken it will have a negative impact on environmental conditions. For this reason, other solutions are needed, one of which is by reducing the use of sand, resulting in a new innovation known as non-sand concrete. This research aims to determine the compressive strength and porosity values of non-sand concrete with ceramic filler. The composition of the mixture used in this research is a variety of combined coarse aggregate sizes of 5-10 mm, 5-20 mm and 10-20 mm, variations in the cement water factor of 0.4: 0.45: and 0.5 with the addition of 15% filler and AC ratio 2:1. The test objects used were cylindrical with a diameter of 15 cm and a height of 30 cm. The number of test objects was 48, with details of 24 for compressive strength and 24 for porosity. Testing the compressive strength of non-sand concrete uses a Compression Testing Machine based on ASTM C39 standards. The results of the research show that variations in the combined coarse aggregate sizes of 5-10 mm, 5-20 mm, 10-20 mm, variations in the cement water factor of 0.4, 0.45 and 0.5, the highest compressive strength is obtained in the combined coarse aggregate size of 5- 10 mm, variation of water cement factor 0.4, AC ratio 2:1 and filler content 15% of 24.72 Mpa at 28 days. For the porosity test results, variations in the size of the combined coarse aggregate were 5-10 mm, 5-20 mm, 10-20 mm, variations in the cement water factor were 0.4, 0.45 and 0.5. The smallest values were obtained for the combined coarse aggregate size of 5-10 mm, variation of cement water factor 0.4, AC ratio 2:1 and filler content 15% with a value of 14,61% at 28 days. The compressive strength of the non-sand concrete specimen without filler was 14.16 Mpa and the smallest porosity was 21.26% at 28 days. The difference in compressive strength and porosity between non-sand concrete using filler and non-sand concrete without filler is 10.28 Mpa and 6.65%. The results of the research show that the size of the combined coarse aggregate and the cement water factor with the addition of 15% ceramic filler greatly influence the compressive strength and porosity of non-sand concrete.

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