Investigating the mechanical performance of the new green concrete product

Abdul Aziz, Farihah Awatif (2022) Investigating the mechanical performance of the new green concrete product. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

In this work, recycled roof tiles waste (GRTW) is studied to replace the fine aggregates used in a cement mixture. This is an innovative effort to produce green concrete. The produced green concrete is intended for construction purposes such as buildings, car porch, drainage, paving and landscaping. The objectives of this project are; to convert the rooftile waste into fine aggregate according to British Standard (BS), to substitute the glazed fired rooftile waste (GRTW) as fine aggregate in the concrete mixture with various percentage, to compare the mechanical performance of new green concrete product containing GRTW with conventional concrete in accordance with British Standard (BS). A total of 12 concrete specimens, 100mm x 100mm x 100 mm each, were tested. Three concrete specimens were kept as control specimens, 9 specimens were contained GRTW as fine aggregate with various proportions (10%, 20% and 50%). Eventually, all specimens were tested for workability which is slump test, water absorption test and compressive strength by using compression testing. It was found that strength gradually increases with the 20% and 50 % in replacement percentage of GRTW compared to British Standard and decreased with 10% of replacement of GRTW. Hence, substitution of 20% of GRTW had been proven to have better mechanical performance compared to control specimen in term of slump test, water absorption test and compression test and can replace sand as fine aggregate in concrete.

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