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Utilization of Rice Straw Ash as a Replacement of Cement and Fine Aggregate in Mortar Mixes
This study is conducted to utilize the rice straw ash which is a waste material that provides for 20% of the global rice production of 649.7 million tons per year. The rice straw ash that was used was locally purchased. In this paper, the rice straw ash (RSA) was replaced with cement, fine aggregate, and both of them, the mix ratio was taken 1:2; cement ash was replaced with RSA 0%, 5%, 15%, and 25%; and then fine aggregate was replaced with RSA 0%, 5%, 15%, and 25% after that both cement and fine aggregate were replaced by RSA (5/5%, 15/15%, 25/25%). The compressive strength test was done on all samples after the age of 7, 14, and 28 days, the density test was done on the samples after the age of 28 days to see the density of the samples, water absorption test was done after the age of 28 days, and the porosity test was also done after the age of 28 days to see the volume of voids in the samples. The result showed that mortar with replacement of up to 15% of fine aggregate with RSA showed better result than the nominal and other mixes in respect to the compressive strength of mortar, and 5% replacement of RSA with cement showed a promise able result as compared to the others in respect to water absorption and porosity tests.
Utilization of Rice Straw Ash as a Replacement of Cement and Fine Aggregate in Mortar Mixes
This study is conducted to utilize the rice straw ash which is a waste material that provides for 20% of the global rice production of 649.7 million tons per year. The rice straw ash that was used was locally purchased. In this paper, the rice straw ash (RSA) was replaced with cement, fine aggregate, and both of them, the mix ratio was taken 1:2; cement ash was replaced with RSA 0%, 5%, 15%, and 25%; and then fine aggregate was replaced with RSA 0%, 5%, 15%, and 25% after that both cement and fine aggregate were replaced by RSA (5/5%, 15/15%, 25/25%). The compressive strength test was done on all samples after the age of 7, 14, and 28 days, the density test was done on the samples after the age of 28 days to see the density of the samples, water absorption test was done after the age of 28 days, and the porosity test was also done after the age of 28 days to see the volume of voids in the samples. The result showed that mortar with replacement of up to 15% of fine aggregate with RSA showed better result than the nominal and other mixes in respect to the compressive strength of mortar, and 5% replacement of RSA with cement showed a promise able result as compared to the others in respect to water absorption and porosity tests.
Utilization of Rice Straw Ash as a Replacement of Cement and Fine Aggregate in Mortar Mixes
Lecture Notes in Civil Engineering
Gupta, Ashok Kumar (editor) / Shukla, Sanjay Kumar (editor) / Azamathulla, Hazi (editor) / Hadizai, Mohammad Ihtesham (author) / Tiwary, Aditya Kumar (author)
Advances in Construction Materials and Sustainable Environment ; Chapter: 65 ; 793-808
2021-12-15
16 pages
Article/Chapter (Book)
Electronic Resource
English
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