Partial Replacement Of Cement By Fly Ash In Concrete

It can be used as cement replacement up to 50 to produce a high strength and durable rcc pavement.

Partial replacement of cement by fly ash in concrete.

Effect of partial replacement of cement by fly ash rice husk ash with using steel fiber in concrete r. Efforts have been made in the concrete industry to use waste glass and fly ash as partial replacement of cement. This review revealed that fly ash is an effective cementitious material in rcc pavement. The investigation reported in this paper is carried out to study the utilization of fly ash in cement concrete as a partial replacement of cement as well as an additive so as to provide an environmentally consistent way of its disposal and reuse and compare their strength parameter.

Replacing cement partially by ggbs and fly ash gives similar strength after 28 days various combinations of concrete gives variable results and maximum quantity of ggbs is 60 that can be replaced by cement and gains the required strength after 28 days the use of ggbs and fly ash is more cheaper than cement and ecofriendly than conventional. According to the graph in figure 1 the 30 replacement of fly ash in the g25 concrete mixes develops the highest strength and this is followed by 40 20 50 and 60. In the present study fly ash is used in portland pozzolanic material ppc concrete as partial replacement of ppc. Fly ash is a pozzolanic material which produces calcium silicate hydrate c s h.

In use of fly ash for partially replacing the portland cement in concrete not only reduces the amount of cement used but also significantly enhances the properties of concrete reduces the. In this study finely powdered waste glasses fly ash and their combination are used as a partial replacement of cement in concrete and compared it with conventional concrete.