Characteristics of Concrete Modified with Ground Granulated Blast-Furnace Slag (GGBS) as Binding Material

Abstract

The industrial waste has been rapidly increased day by day because of the fast-expanding population which dumps the waste in an inappropriate way resulting in environmental pollutions. It has been recommended that; the disposal of industrial waste would be greatly reduced if it could be incorporated in concrete production. Among these waste, one option is the replacement of cement by slag, which causes in the decrease of consumption of cement, reduction in emissions of CO2, while solve a waste management issue. The basic objective of this investigation is to examine the characteristics of concrete using Ground granulated blast-furnace slag (GGBS) as binding material in proportions 0%, 10%, 20%, 30%, 40% & 50% by weight of cement. Several properties have been reviewed in the current paper. The results observed from slump test depict that replacement of Ground granulated blast-furnace slag (GGBS) increased slump of concrete. The tests result also depict that GBBS enhances strength (compressive, split tensile and flexure strength) of the concrete up to 30% substitution and beyond 30% substitution, the strength starts to fall gradually. Therefore, it is recommended to used steel fibers up 30% by weight of cement to achieved maximum benefits.