Experimental investigation on utilization of rice husk ash and fly ash in rigid pavement
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Author |
Hemantha Raja K., K. Shyam Prakash, B. Santosh kumar, N. S. S. Kruthin and B. H. Gopi Prashanth
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e-ISSN |
1819-6608 |
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On Pages
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373-377
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Volume No. |
20
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Issue No. |
7
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Issue Date |
June 10, 2025
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DOI |
https://doi.org/10.59018/042549
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Keywords |
rice husk ash, cement replacement, feasibility, fly ash.
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Abstract
This study primarily focuses on the Utilization of rice husk ash and fly ash as partial replacement in traditional cement in rigid pavement construction. Various Proportions of Fly ash (5%, 10%, 15%) and Rice Husk ash (5%, 10%, 15%) were incorporated into cement mixtures. The targeted mechanical properties, which are compressive strength, split tensile strength, and flexural strength at prescribed number of days required which were assessed through standardized tests. The mix with a 10:10 ratio of rice husk ash and fly ash was cast, and the cubes were kept in the curing tank for 7, 14, and 28 days to check the compressive strength as per the testing Process. Next, the mix ratio of 10:10 with rice husk ash and fly ash, which were used to cast the prisms and were kept in the curing tank for 28, 56 days to check their Tensile strength as per the testing process. The next ratio of 10:10 with Rice husk ash and fly ash will be applicable for the cylinders and will be placed in the curing tank for 28, 56 days to check its required strength. The next ratio of 5:15 with rice husk ash and fly ash was then used to cast cubes and was placed in the curing tank. The various proportions of collected material’s replacement partially in the cement will be used to promote both environmental benefits as well as economic feasibility. The ratio of 5:15 rice husk ash and fly ash will be used as proportions in both Prisms and Cylinders, so it can be checked for the vast amount of cementitious content with the different materials as mentioned. Then, the last ratio of 15:5 with rice husk ash and fly ash, which were used to cast all specimens (cubes, prisms, cylinders) at per required days as mentioned above for different ratios.
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