Investigating the Properties of Blended Concrete with Silica Fume and Marble Dust Experimentally

Abstract

In this research, silica fume functions as a pozzolanic component in concrete and marble dust is used as the fine aggregate. The performance of marble dust and silica fume separately and in combination with blended concrete is evaluated in this study using metrics including slump value, 28-day compressive strength, and 7-day compressive strength. Cement, marble dust, silica fume, coarse aggregate, water, and fine aggregate make up the concrete mixture. Ten distinct proportional combinations, or "mix designations," are subjected to laboratory testing in order to ascertain the compressive strength at 7 days, 28 days, and the slump value. In this concrete mix design, 10%, 15%, and 20% of the fine aggregate are replaced with marble dust, while 3%, 5%, and 7% of the cement is substituted with silica fume. C (control), SF3%, SF5%, SF7%, SF3%MD10%, SF3%MD15%, SF3%MD20%, MD10%, MD15%, and MD20% are the mix combinations that are indicated by these letters. This entails mixing 10%, 15%, and 20% marble dust with 3% silica fume in different proportions. The compressive strength of the concrete after seven and twenty-eight days of curing, as well as the slump value of the fresh concrete, are assessed in the laboratory trials