Compressive strength and porosity of mortar containing ground basalt
Keywords:
Compressive strength, Pozzolanic material , Porosity, BasaltAbstract
This research presents a study of the compressive strength and porosity of mortar containing ground basalt (BS). Portland cement type 1 (OPC) was partially replaced at 0-40% of BS by weight of cementitious materials. Water to binder ratio (W/B) with constant of 0.43 was used. Superplasticizer (SP) was used to improve the workability of mortar. Test results found that the use of BS mixed in amounts of 10-20% as a partial cement replacement by weight of the cementitious material results in higher compressive strength and low porosity when compared to control mortar (CT) at 28 days. The ground basalt (BS) can be used as a pozzolanic material or cementitious materials. This is due to the strength activity index of the mortar that was replaced at 20% of BS by weight of cementitious materials is higher than 75% of the control mortar at the age of 7 and 28 days. The results of this research are a reduction in the amount of waste materials, reduce the burden of disposal and reduce environmental problems.
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