Impact Of Pozzolanic Materials as A Partial Replacement of Cementitious Material on Hardened Properties of Concrete
Abstract
This experiment on study of the impact of various supplementary cementitious materials, in this research, the Pozzolanic materials used is silica fumes and fly ash on different properties of concrete. Due to the possibility that combinations of cement additions could yield more benefits for concrete than only one material, this analysis concentrated on the examination of the effects of various extra Cementitious materials on different properties of concrete. The purpose of the current study was to investigate the variation of compressive strength at 7 & 28 days of curing, elastic modulus at 28 days & split tensile strength. In this study variation of percentage of fly ash is from 0% to 75 % and maintaining silica fumes constant at 15%.Cement is partially replaced by silica fume and fly ash.
The key characteristics of cement, silica fumes, fly ash aggregate, water are mentioned in this paper. This study covers physical and chemical properties of fly ash & silica fumes. This case includes partially replacement of these Pozzolanic materials with cement. The main goal of the research is to determine if it feasible to replace Pozzolanic material partially with cement.
The change in compressive strength at 7 and 28 days and split tensile strength at 28 days is the same, however the variance in elastic modulus was entirely different. However, modulus of elasticity was discovered highest at a 30% total replacement. This replacement is done by replacing silica fumes & fly ash. Compressive strength and split strength were found most at a 45 percent replacement. The test findings show that silica fume and ash are frequently used to improve the compressive strength and lengthen the elastic modulus of concrete.
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