Partial Replacement Of Cement By Fly Ash In Concrete

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.

Partial replacement of cement by fly ash in concrete.

As per is 456 the maximum replacement of cement with flyash have a capping of 35. In the ancient period construction work was mostly carried out with help of mudstone from industry. In the present study fly ash is used in portland pozzolanic material ppc concrete as partial replacement of ppc. 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 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. Effect of partial replacement of cement by fly ash rice husk ash with using steel fiber in concrete r. 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. 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.

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.