Partial Replacement Of Cement By Fly Ash In Concrete

In the present study fly ash is used in portland pozzolanic material ppc concrete as partial replacement of ppc.

Partial replacement of cement by fly ash in concrete.

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. Flyash is the most economical and easily available mineral admixture that can partially replace cement in a concrete mix the resultant concrete will have excellent fresh hardened and durable properties. 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. Fly ash is a pozzolanic material which produces calcium silicate hydrate c s h.

In the ancient period construction work was mostly carried out with help of mudstone from industry. 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. Efforts have been made in the concrete industry to use waste glass and fly ash as partial replacement of cement. As per is 456 the maximum replacement of cement with flyash have a capping of 35.

Effect of partial replacement of cement by fly ash rice husk ash with using steel fiber in concrete r. This review revealed that fly ash is an effective cementitious material in rcc pavement.