A Review Study on Cost Comparison of Normal and High-Volume Fly Ash Concrete

With the growing urbanisation and development the demand of concrete does not seem to go dormant in the future. But due to limited supply of non-renewable constituents of concrete they are needed to be preserved for the future generations, so there is utmost necessity of using supplementary waste materials in concrete With advancement in science and technology it is made possible that the waste materials like fly ash, lime stone quarry fine, silica fume, blast furnace slag etc can be used as a supplement. Here we will study the effect of replacing cement with Fly Ash on strength and economy of concrete. In this present study first of all the need, scope and advantages of using High Volume Fly Ash Concrete is discussed .The existing records of research on use of Fly Ash in concrete is followed by the tests conducted on Aggregates like Sieve Analysis, Impact Value, Water Absorption Test etc. The properties of various materials used are also discussed. After that comes experimental programme which includes tests done on concrete samples casted in the study of grade M40 and M25 in which cement is replaced by Fly Ash in different percentages (28%,50% and 70%) and the strength characteristics of High-Volume Fly Ash Concrete is checked. Last portion of this study deals with the various observations made during the tests and results obtained after it based on which interpretations are made regarding the cost of the various concrete mix used in the study and conclusion are drawn based on which we can decide whether substituting cement with is suitable for a given project or not.