Effect of High Temperature on Fly Ash Concrete

International Journal of Civil Engineering

© 2017 by SSRG - IJCE Journal

Volume 4 Issue 6

Year of Publication : 2017

Authors : Ahmed Jawed, Vikash Vashsith, Bhanupriya Sharma

10.14445/23488352/IJCE-V4I6P109

How to Cite?

Ahmed Jawed, Vikash Vashsith, Bhanupriya Sharma, "Effect of High Temperature on Fly Ash Concrete," SSRG International Journal of Civil Engineering, vol. 4,  no. 6, pp. 48-51, 2017. Crossref, https://doi.org/10.14445/23488352/IJCE-V4I6P109

Abstract:

In this experimental study, an attempt has been made to determine the behaviour of Multiblended Ordinary Portland Cement concrete with 10% and 20% fly ash of M30 grade of concrete at higher temperatures ranging from 1000C to 6000C. The specimens after single cycle of heating and cooling were tested for their residual compressive strength.. The changes in physical state were also studied by measuring UPV. The cubes casted of conventional and with 10% and 20% fly ash of M30 grade of concrete after exposure to higher temperatures are showing gradual decrease up to 3000C and drastic retardation in the compressive strength and pulse velocity at higher temperatures beyond 5000C. It is observed from the results that cubes with higher concentrations of fly ash show higher rates of decrease in compressive strength, pulse velocity and much lower concentrations, i.e. dehydration and complete decomposition of cement hydration compounds like CSH, CH etc.

Keywords:

concrete, fly Ash, high temperature, multiblended concrete, fire damage, residual strength, compressive strength, pulse velocity.

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