Abstract:

Natural sand is most commonly used fine aggregates in the production of concrete possess the problem of acute shortage in many areas. Quarry dust can be used as an economic alternative to the natural sand. In this investigation an attempt is made to utilize quarry dust as a partial substitute for natural sand in producing concrete. Natural sand is replaced by Quarry dust at an interval of 5%, 10%, 15%, 20% and 25%. Mix proportions for M20 concrete is prepared with reference to IS: 10262-2009 and IS: 456-2000 for the study of workability. Compressive strength and Flexural strength test results are compared with the conventional concrete. The strengths were obtained at the ages of 3, 7 and 28 days. Compressive and Flexural strength increased marginally from 5% to 15% replacement. There is a slight decrease in the corresponding compressive and flexural strength at 20% replacement. Good correlation was observed between compressive strength and flexural strength. It was observed that the addition of quarry dust that would replace the fine material at particular proportion has displayed an enhancing effect on properties of concrete. This investigation proves that quarry dust can be used as a partial substitute for natural sand in preparing concrete.

Description:

compressive strength, flexural strength, quarry dust, workability.