Yoman, Kleofas (2024) Pengaruh Ukuran Agregat Kasar Gabungan Dan Faktor Air Semen Terhadap Kuat Tekan Dan Porositas Beton Non Pasir Dengan Filer Kaca. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Concrete materials are widely used in the construction world because they have high compressive strength. In the production of concrete, the use of sand as a fine aggregate causes the density of concrete to increase the specific gravity of concrete. Therefore, we must find solutions or innovations to overcome the weight of conventional concrete, especially using sand-free concrete. Making concrete without sand will cause many voids. One way to fill these voids is to use fillers to reduce porosity and function as a binder between concrete constituent aggregates. The manufacture of sandless concrete with the addition of glass filler,
variation of combined coarse aggregate size and cement water factor aims to determine the effect of combined coarse aggregate size and cement water factor on the strength of non-sand concrete with glass filler.
The mix composition used in this study combined coarse aggregate sizes of 5-10 mm, 5-20 mm, 10-20 mm cement water factor of 0.4; 0.45; 0.5 with the addition of 15% glass filler, and a cement aggregate ratio of 2:1. The test specimens in this study were cylinders with a size of 15 cm x 30 cm using a compression testing machine based on ASTM C39 standards.
The results showed that non-sand concrete specimens with a mixture variation of 5-10 mm combined coarse aggregate size, fas 0.4, 15% glass filler, and AC 2:1 had the highest average compressive strength of 24.44 Mpa. While normal non-sand concrete specimens without filler have the highest average compressive strength of 14.16 Mpa using a coarse aggregate size of 5-10 mm, AC 2:1 and Fas 0.5. For the results of the largest non-sand concrete porosity test in each coarse aggregate size variation is 18.04% with a combined coarse
aggregate size of 10-20 mm, fas 0.5 and AC 2: 1, and the smallest is 14.32% with a combined coarse aggregate size of 5-10 mm, fas 0.4, and AC 2: 1. So it can be concluded that in this study the average compressive strength of coarse aggregate size 5-10 mm and cement water factor (FAS) 0.4 has the highest compressive strength value of non-sand, while for the test results the largest porosity is found
in the combined coarse aggregate size 10-20 mm with cement water factor 0.5

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