Bayo, Rivaldi Budiman (2024) Pengaruh Ukuran Agregat Kasar Gabungan Dan Rasio Agregat Kasar Semen Terhadap Kuat Tekan Dan Porositas Beton Non Pasir Dengan Filler Kuarsa. 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 quartz 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 cement aggregate ratios of 2:1, 3:1 and 4:1 with the addition of 15% filler, water cement factor constant 0.5. 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 showed that variations in the size of the combined coarse aggregate were 5-10 mm, 5-20 mm, 10-20 mm, variations in the ratio of cement aggregate to the highest compressive strength were obtained in the size of the combined coarse aggregate 5-10 mm, variations in the AC ratio of 2:1 and content 15% filler of 23.59 Mpa. For the results of the porosity test, variations in the combined coarse aggregate sizes of 5-10 mm, 5-20 mm, 10-20 mm, variations in cement aggregate ratios of 2:1, 3:1, and 4:1, the smallest values were obtained for the combined coarse aggregate size of 5- 10 mm, variations in cement aggregate ratio, and filler content of 15% with a value of 13.12%. The compressive strength of the non-sand concrete specimen without filler was 14.44 Mpa and the smallest porosity was 21.26%. The difference in compressive strength and porosity between non-sand concrete using filler and non-sand concrete without filler is 14.20 Mpa and 7.5%. The results of the research show that the size of the combined coarse aggregate and the ratio of cement aggregate with the addition of 15% quartz filler greatly influence the compressive strength and porosity of non-sand concrete.

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