PThe continuous search for alternative binding materials in place of cement has led
researchers into looking for both artificial and naturally occurring materials that can be used to
partially replace cement in the construction industry. Materials such as slag, fly ash, rice husk
ash, wood ash and corncob ash which have cementitious properties, have been investigated, while
works have been intensified on the use of metakaolin as cementitious materials in the last decades.
This work looked into the use of metakaolin from the Isan-Ekiti kaolin deposit as a cementitious
material. Chemical, slump and mechanical tests were conducted on the calcinated kaolin that gave
the metakaolin. The chemical result showed that the metakaolin has pozzolanic characteristics
and is classified as class “N” pozzolan. The mechanical tests revealed that cement can be partially
replaced in concrete with metakaolin for up to 20% by weight.
Keywords: Metakaolin, Calcinated, Pozzolan, Cement, Mechanical test.
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