Experimental Investigations on High Performance Concrete Containing Manufactured Sand as Fine Aggregate

Abstract

Concrete is the second largest consumed product than water all over the world due to rapid industrialization across the major cities. In India, conventional concrete is produced by using natural sand across the river beds as fine aggregates. It poses a serious environmental issue is dwindling the sand resources and hence government restrictions on sand quarrying resulted in scarcity and significant increase in its cost. Manufactured Sand (M-Sand) has turned out to be a good substitute for natural sand and also it has become essential keeping in view, the technical, commercial & environmental requirements. The aim of the study is to investigate the influence of M-Sand on the strength properties of High performance concrete in presence of silica fume. The investigations were carried out on High performance concrete containing silica fume in various proportions of 0, 5, 10, 15 percentage by weight of cement as partial replacement and for each proportions natural sand with M-Sand in proportions of 20, 40, 60 and 80%. The High performance concrete mix is designed for grade of M60 as per ACI 211-4R-08. In the present investigation the mechanical properties like compressive strength, flexural strength and split tensile strength. The results indicate that the replacement by 10% Silica fume and 60% M-Sand showed significant improvement in strength when compared to control mix. Hence M-Sand can be used in concrete as a viable alternative to natural sand for the High Performance Concrete in the Construction industry.