Experimental study on river sand replacement in concrete

Abstract

With the basic continuous improvement of China's infrastructure, the demand for concrete is increasing day by day. Sand is an important component of concrete, its characteristics have an important influence on various properties of concrete. In recent years, with the policy guidance of energy conservation and environmental protection, there is a serious shortage of river sand resources all over the country. So, it is urgent to replace river sand with energy saving materials, machine-made sand and superfine Yangtze River sand. Based on the determination of two kinds of sand, an experimental research scheme is proposed to compare the workability and strength of C30 concrete under different proportions. It needs to find out the best proportion relationship to replace river sand. It provides a feasible research scheme to solve the problem of river sand shortage.