A Comparative Study of Different Types of Fine Aggregates in High Strength Concrete

Abstract

The effect of artificial sand and crush sand as fine aggregate in concrete is to substitute the natural sand content in concrete. The experimental work is mainly concerned with the study of mechanical properties like compressive strength, split tensile strength and flexural strength of concrete by full replacement of natural sand by artificial sand as fine aggregate Common river sand is expensive due to cost of transportation from natural source. Also large scale depletion of these source create environmental problem. Thus the artificial sand produced by proper machines can be a better substitute to river sand. The sand should be sharp, clean and course. The grains should be of durable material. The promotional use of artificial sand will conserve the natural resources for the sustainable development of the concrete in construction industry. The use of high strength concrete results in many advantages, such as reduction in sizes of beam and column and increase in the building height by many stories. In pre-stressed concrete construction, a greater span-depth ratio for beams may be achieved with the use of high strength concrete. Thus overall research study looks forward at introducing a way to make use of these different types of fine aggregates in HSC to increase the strength and durability of concrete and also to reduce the micro cracking effect in concrete. The project study reveals that the artificial sand gives better economical aspect if used in addition to the mineral admixtures and chemical admixtures in high strength concrete. Use higher dose of super plasticizer, for enhancing workability of mixture with artificial sand.