ANALISIS KUAT TEKAN BETON CAMPURAN PECAHAN GENTENG SEBAGAI PENGGANTI SEBAGIAN AGREGAT KASAR BETON MUTU SEDANG

Warsiti Warsiti


Abstract


In line with the economical development, there are a lot of old buildings renovation which produces material waste like roof tile. To use the existing roof tile waste, the research on the use of soka roof tile waste for concrete mixture was performed considering that soka roof tile fraction is hard enough. By using part of soka roof tile fraction in the aggregate for concrete mixture, it is expected that it doesn’t affect the quality or pressure strength of the produced concrete. This is more economical since the pebble price is more expensive than soka roof tile price. The aim of the research is to find out the percentage of soka roof tile fraction in the coarse aggregate for concrete mixture so that it doesn’t affect the concrete pressure strength, seek for the correlation between concrete pressure strength and the percentage of soka roof tile fraction in coarse aggregate for concrete mixture, seek for the correlation between concrete pressure strength and aggregate weathering. In this research, the testing material is in the form of cube 15 x 15 x 15 cm with slump value as the fixed variable, mean while the non fixed variable is the percentage of soka roof tile fraction in the mixture, that is 0, 10, 20 30, 40, 50 % of its coarse aggregate. From the result of the research, it is obtained that in the 10% percentage of soka roof tile fraction, the generated concrete pressure strength doesn’t change or has no influence. The correlation between concrete pressure strength and the percentage of soka roof tile fraction in the aggregate is y = -1,5368X + 233,2 and the correlation between concrete pressure strength and the aggregate weathering is y = -21,243 X + 64,63. With the percentage of roof tile fraction in the aggregate as much as 50% may affects the decreasing of concrete quality and the concrete pressure strength reaches 31,32%.


Keywords


aggregate composition, concrete quality, pressure strength

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