Assessment of usage of manufactured sand and recycled aggregate as sustainable concrete: A review

Abstract

Globally, River sand is one of the important materials that have been used as a fine aggregate for the manufacture of concrete and mortar. The demand for the fine aggregate increased due to the restriction by the government to extract the sand from the river bed as it causes sand mining. Hence, alternatively manufactured sand is used in place of fine aggregate in the concrete. Due to rapid urbanization in India more public construction activities were in progress. Hence it requires more concrete and intern more coarse aggregate. Mining of coarser aggregate again endanger environment. However huge waste generates from construction and demolition (C&D) activity creating effective disposable problem. Hence C&D waste could effectively utilized in the place of natural coarse aggregate to meet the growing demand and to safeguard environment. The paper primarily deal with literature review pertaining to effective utilization of manufactured sand and coarse aggregate in place of natural fine and coarse aggregate in manufacturing of various grades of ecofriendly concrete. Also it report performance of ecofriendly concrete of various grades with reference to workability, mechanical, durability and micro structural properties. Indeed it will give better insight about the utilization of manufactured sand and recycled aggregate in concrete by various researchers.