Effect of Rice-Husk as Replacement Cement on Mechanical Properties Concrete

• Published in: Journal of Mechanical Engineering
• Main Author: Bakar M.N.H.A.; Kudus S.A.; Mustaffa N.K.; Jamadin A.; Abbas H.A.; Hassan R.; Kamaruddin N.
• Format: Article
• Language: English
• Published: UiTM Press 2023
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159887905&doi=10.24191%2fjmeche.v20i2.22056&partnerID=40&md5=fc71fbbbd43f5f9447159640cefeab65

The cost of producing concrete has increased, and its effects on the natural environment have become apparent. The ideal solution is to use agro-waste material instead of cement in concrete. This research aims to determine how well RHA works as a cement substitute. At increments of 5%, 10%, and 15%, rice husk was applied in substitute of cement. Compressive and flexural tests were performed on a 100 mm x 100 mm x 100 mm cube and 100 mm x 100 mm x 500 mm prisms with varying percentages of RHA substitution. Findings show that the highest control sample has a compressive strength of 49.83 MPa while t The compressive strength began to drop at 5% RHA substitution. The compressive strength decreased as the percentage of RHA used increased from 10% to 15%. The flexural strength data shows that the 10% RHA has a maximum of 4.90 MPa. The lowest value is 3.85 MPa, and it is only seen from 5% of RHA. Thus, it can be inferred that an RHA replacement level of 5% in cement yields a tremendous increase in compressive strength © 2023 College of Engineering, Universiti Teknologi MARA (UiTM), Malaysia