Experimental Investigation on Strength of Concrete by Using Metakaolin and Flyash

Abstract

Concrete is the most commonly used for construction. The need of high Strength concrete is increasing day by day. The test carried out on concrete specimens with 0,6,12,18% replacement of cement by using Metakaolin and FlyAsh together. Concrete is very strong in compression but very weak in tension. However it is reported that tensile and bending strength of concrete is 10 to 15% of the compressive strength respectively. The addition of different types of pozzolonic material in concrete have significantly improves its compressive as well as tensile strength. In the present study Metakaolin and FlyAsh are used in the concrete mixes and compressive of the specimens to be tested. A total of (4+4) mixes are to be prepared by varying the percentages of Metakaolin and FlyAsh on M40 and M20 Grade of Concrete Mix. Certain properties such as workability, later age strength development and few durability characteristics due to the addition of FlyAsh in concrete improves. Concrete is the high volume of fly ash and Metakaolin as a partial replacement of Ordinary Portland Cement. The conventional concrete M40 and M20 are made with the mixture of Metakaolin and FlyAsh in order to evaluate different properties based on concrete and compare with conventional mix. From the optimization 18% cement replacement by Metakaolin and FlyAsh superior than all the mixes.