Mechanical Properties of Recycled Aggregate Concrete Containing Colloidal Nano-Silica Designed by Taguchi Method

Abstract

In recent years Recycled Aggregates (RA) are being used by many researchers to conserve the natural resources, to prevent environmental pollution, due to Shortage of land for waste disposal and also to reduce the construction cost. The major drawbacks of Recycled Aggregate Concrete (RAC) are the high water absorption capacity, low specific gravity and low bulk density of RA compared to natural aggregates. Nano—silica (NS) the better one among all pozzolanic materials has selected which contribute the efficient particle packing in concrete by densifying the micro and nano-structure; leading to improved mechanical and durability properties. Due to wide variability properties of recycled aggregate (RA) and Nano-silica (NS) a large number of experiments required to conduct as per desired requirement depending upon various control factors at different levels.