Flexural strength behaviour of two-hollow interlocking concrete block inclusion with recycled concrete aggregate

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Author: Othman N.S.; Nor N.M.; Saliah S.N.M.
• Format: Conference paper
• Language: English
• Published: Institute of Physics 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198478039&doi=10.1088%2f1755-1315%2f1369%2f1%2f012032&partnerID=40&md5=e35729eb0b2764c8b0ec8a31673b9dde

In this study, the flexural strength of two hollow, interlocking concrete blocks (ICBs) made from 50 % recycled concrete aggregates (RCA) was determined under three-point loading. The study used a 1:4 concrete mix in which 50 % of the sand was replaced with recycled concrete aggregate. There was also a control mix without RCA and superplasticiser. The flexural strength, and compressive strength of the interlocking concrete blocks were determined after 7, 14 and 28 days of curing. The two-hollow interlocking concrete blocks (THICB) exhibited optimum strength for the elements, indicating the potential usability of RCA as a component of a mortar mix. The result shows that the compressive and flexural strength of the concrete blocks increased with the recycled concrete aggregate content. Replacing the fine aggregate with RCA of 0 and 50 % therefore has a significant effect on improving important properties of the ICBs. © 2024 Institute of Physics Publishing. All rights reserved.