Studies on strength and durability of High performance concrete using Recycled concrete aggregates

Abstract

Increase in demand and decrease in supply of aggregates for the newlineproduction of concrete result in the need to identify new sources of newlineaggregates Construction materials are increasingly judged by their ecological newlinecharacteristics Recycling of concrete gains importance because it protects newlinenatural resources and eliminates the need for disposal by using the readily newlineavailable concrete as an aggregate source for new concrete Several newlineinvestigations made to study the effects of recycled aggregate on the newlineengineering properties of concrete newlineThe advancement of concrete technology as well as the newlinedevelopment of new materials and components has resulted in increased newlineperformance and strength needs which are not adequately satisfied any newlinelonger Maintenance repair and rehabilitation of existing cement concrete newlinestructures also involve a lot of problems causing significant expenditures newlineHence there is an urgent need to pay more attention for improving the newlineproperties of concrete with respect to strength and durability especially in newlineaggressive environment Here recycled concrete aggregate is used as a newlinesubstitute for fine aggregate newline newline