Lokman Hakim Ibrahim
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Lokman Hakim Ibrahim
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Lokman Hakim, Ibrahim
Alternative Name
Hakim, I. Lokman
Ibrahim, Lokman Hakim
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Scopus Author ID
55565188700

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  • Publication
    The properties of crumb rubber loading on fly ash based geopolymer mortar
    (Springer Nature, 2023)
    Reshikesan Ravi
    ;
    Ahmad Azrem Azmi
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Lokman Hakim Ibrahim
    ;
    Romisuhani Ahmad
    ;
    Che Mohd Ruzaidi Ghazali
    By replacing traditional Portland cement (OPC) with crumb rubber in fly ash-based geopolymer mortar, waste tyre disposal and natural mineral aggregate use can be reduced, resulting in lower CO2 emissions. Crumb rubber geopolymer mortar is formed when sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) are mixed with fly ash (class F) to make aluminosilicate gel. All of the fly ash geopolymer preparations followed the same ratio of solid to liquid (2:1) and the same ratio of NaOH solution (12M) to Na2SiO3 solution (2.5). Different amounts of crumb rubber (0%, 5%, 10%, 15%, and 20% by weight of solid) were added to the mixture. The results show that the compressive strength of the geopolymer mortar decreased with increasing crumb rubber loading. The results of the analysis show that the compressive strengths of CR-0%, CR-5%, CR-10%, CR-15%, and CR-20% are 25,59,14,31,11.19,10.38, and 8.16 MPa. The strength is diminished because of inadequate interfacial adhesion between the crumb rubber and geopolymer paste. As the sample weight fell, the percentage of crumb rubber in the geopolymer mortar in-creased, but the density decreased.