KAJIAN PENAMBAHAN COCONUT SHELL ASH TERHADAP KUAT TEKAN DAN RONGGA UDARA PADA BETON K-300
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Institusion
Universitas Darul ulum
Author
Wahid Putra, Pramono
Subject
QC Physics
Datestamp
2021-10-19 15:37:05
Abstract :
Concrete is one of the most instrumental materials and is most often used in the building and construction sector in Indonesia. Cement as one of the building blocks of concrete can cause damage to the environment, ranging from the collection of raw materials, the production process to ash pollution caused. Therefore, an alternative material that can be used as a substitute for cement is to utilize organic waste, such as coconut shell ash, considering that coconut shells have the potential to cause organic waste that is still very poorly processed. In this study, it is expected that the amount of cement use in concrete can be reduced by investigating the potential of coconut shell ash as a percentage replacement material for cement and its effect on the strong press of concrete. The research method used is experimental studies in the laboratory. In this study conducted 6 (six) variations in the percentage of coconut shell ash, which is 0% (control); 4%; 8%; 12%; 16%; and 20% of the initial cement weight with the number of test objects each percentage variation amounts to 3. Strong testing of concrete press is done when concrete reaches the age of 7 days, 14 days and 28 days. The results of the study found that on the test of the normal concrete press at 28 days is 300 kg / cm2 with an air cavity value of 0.023%. While the hard value of the optimum press of concrete with coconut shell ash mixture at the age of 28 days is as much as 4% with a hard compress value of 319.11 kg / cm2 or up 6.37% from normal concrete. While the smallest air cavity value is found in coconut shell ash mixture 8% with a value of 0.011%.
Concrete is one of the most instrumental materials and is most often used in the building and construction sector in Indonesia. Cement as one of the building blocks of concrete can cause damage to the environment, ranging from the collection of raw materials, the production process to ash pollution caused. Therefore, an alternative material that can be used as a substitute for cement is to utilize organic waste, such as coconut shell ash, considering that coconut shells have the potential to cause organic waste that is still very poorly processed. In this study, it is expected that the amount of cement use in concrete can be reduced by investigating the potential of coconut shell ash as a percentage replacement material for cement and its effect on the strong press of concrete. The research method used is experimental studies in the laboratory. In this study conducted 6 (six) variations in the percentage of coconut shell ash, which is 0% (control); 4%; 8%; 12%; 16%; and 20% of the initial cement weight with the number of test objects each percentage variation amounts to 3. Strong testing of concrete press is done when concrete reaches the age of 7 days, 14 days and 28 days. The results of the study found that on the test of the normal concrete press at 28 days is 300 kg / cm2 with an air cavity value of 0.023%. While the hard value of the optimum press of concrete with coconut shell ash mixture at the age of 28 days is as much as 4% with a hard compress value of 319.11 kg / cm2 or up 6.37% from normal concrete. While the smallest air cavity value is found in coconut shell ash mixture 8% with a value of 0.011%.
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