PENGARUH PENAMBAHAN PASIR BESI TERHADAP KUAT TEKAN BETON K-300
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Institusion
Universitas Muhammadiyah Palembang
Author
MUHAMMAD ALIF DANYA FURQON, NIM. 112014191
Subject
Bahan-bahan Bangunan
Datestamp
2019-09-21 02:56:49
Abstract :
Infrastructure development in the 21st century is being actively carried out. Housing is one of the most widespread infrastructure development products. In housing development requires the main foundation, namely concrete which generally uses sand as a mixture. Times the sand has large enough granules so that the resulting concrete tends not to be strong and less durable. One alternative that can be used is iron sand which has a smaller grain size than river sand so that it is expected to be able to make concrete stronger and more durable. The purpose of this study was to determine the effect of iron sand on the K-300 concrete compressive strength. Iron sand added with a variation of 2%,3%,4% using cube-shaped specimens with dimensions of 15 × 15 × 15 cm as many as 36 samples consisting of 3 variations, each with 9 samples, concrete quality tested at 3, 7, and 28 days. The results showed the compressive strength of normal concrete characteristics at 3 days of age was 238.76 Kg / cm2, 7 days was 270.64 Kg / cm2, and 28 days was 370.16 Kg / cm2, the addition of iron sand was 2% at 3 days amounting to 192.33 Kg / cm2 with an effect of -6.11%, 7 days amounting to 262.14 Kg / cm2with an effect of -3.87%, 28 days at 314.77 Kg / cm2 with an influence of -11.8%, addition of iron sand 3% at 3 days at 207.88 Kg / cm2 with an effect of -14.65 %, 7 days amounting to 262.28 Kg / cm2 with an effect of -4.94%, 28 days at 296.64 Kg / cm2 with influenceat -16.8%, the addition of 4% iron sand at 3 days at 178.06 Kg / cm2 with an effect of -14.97%, 7 days at 236.13 Kg / cm2 with an effect of -10.3% 28 days at 264.58 Kg / cm2 with an effect of -26.2%. based on the results of the study it can be concluded that the more iron sand we use, the more there is a decrease in the concrete compressive strength . Keywords: iron sand, concrete K-300
Infrastructure development in the 21st century is being actively carried out. Housing is one of the most widespread infrastructure development products. In housing development requires the main foundation, namely concrete which generally uses sand as a mixture. Times the sand has large enough granules so that the resulting concrete tends not to be strong and less durable. One alternative that can be used is iron sand which has a smaller grain size than river sand so that it is expected to be able to make concrete stronger and more durable. The purpose of this study was to determine the effect of iron sand on the K-300 concrete compressive strength. Iron sand added with a variation of 2%,3%,4% using cube-shaped specimens with dimensions of 15 × 15 × 15 cm as many as 36 samples consisting of 3 variations, each with 9 samples, concrete quality tested at 3, 7, and 28 days. The results showed the compressive strength of normal concrete characteristics at 3 days of age was 238.76 Kg / cm2, 7 days was 270.64 Kg / cm2, and 28 days was 370.16 Kg / cm2, the addition of iron sand was 2% at 3 days amounting to 192.33 Kg / cm2 with an effect of -6.11%, 7 days amounting to 262.14 Kg / cm2with an effect of -3.87%, 28 days at 314.77 Kg / cm2 with an influence of -11.8%, addition of iron sand 3% at 3 days at 207.88 Kg / cm2 with an effect of -14.65 %, 7 days amounting to 262.28 Kg / cm2 with an effect of -4.94%, 28 days at 296.64 Kg / cm2 with influenceat -16.8%, the addition of 4% iron sand at 3 days at 178.06 Kg / cm2 with an effect of -14.97%, 7 days at 236.13 Kg / cm2 with an effect of -10.3% 28 days at 264.58 Kg / cm2 with an effect of -26.2%. based on the results of the study it can be concluded that the more iron sand we use, the more there is a decrease in the concrete compressive strength . Keywords: iron sand, concrete K-300
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