Mechanical Properties of Concrete Containing River Indus Sand and Recyclable Concrete Aggregate

In Pakistan construction Industry, concrete construction is cheaper than the other construction methods with respect to thatconstruction materials demand rises. The 75% volume of total concrete fill with aggregate which contributes to decreasethe natural aggregate resources day by day. The best solution for this problem is to utilize River Indus sand and recyclableconcrete aggregate as fine and coarse aggregate respectively. In this research the River Indus sand and recyclable coarseaggregate were fully replaced with normal aggregates. The aim of this study was to examine the flexural and tensileperformance of concrete containing the River Indus sand and recyclable concrete aggregate. The physical properties werealso examined which include the sieve analysis and chemical composition of River Indus sand. The M15, M20 and M25grade were analyzed at 7, 14, 21 and 28 days water curing. The results define that, flexural strength was reduced from 5%to 15% compared to normal aggregate whereas tensile was decreased from 1% to 1.8% at 28 days water curing.

Keywords:

Flexural Strength , Tensile Strength , River Indus Sand , Recyclable Concrete Aggregate , Sieve Analysis