Pollution Research Paper

ENVIRONMENTAL FRIENDLY SILICA FUME BASED HIGH PERFORMANCE CONCRETE WITH M-SAND

T. SHANMUGAPRIYA AND R.N. UMA

Abstract

This paper presents the experimental investigation on the effective use of manufactured sand as a fine aggregate and silica fume as a partial replacement of cement on the mechanical properties of High Performance Concrete (HPC). A study has been made to determine the optimum percentage of manufactured sand for making High Performance Concrete. Concrete cubes of size 100 x 100 x 100 mm, Cylinder specimens of size 150 mm diameter and 300 mm height and Prisms specimens of size 100 x100 x 500 mm were prepared for the High Performance Concrete with partial replacement of natural sand by M-sand along with partial replacement of cement by 7.5% Silica fume constantly for all mixes. The compressive strength, Split Tensile Strength and Flexure Strength and were found out at 7, 14, and 28 days. The concrete used in this investigation was proportioned to target a mean strength of 60MPa and W/B ratio was 0.32. The investigation revealed that the concrete exhibits excellent strength with 60% replacement of natural sand by manufactured sand with 7.5% Silica fume.Hence M-Sand can be used in concrete as a viable alternative to natural sand for the Environmental friendly High Performance Concrete in the Construction industry.