Abstract
Solid wastes are the inevitable production of the operations of various industries like construction Industry, Machines Manufacturing Units, Textile industry etc. In India the construction industry generates large amounts of waste, which can be composed of different origin materials, most of them classified as non-hazardous. Construction and Demolition waste (CDW) constitutes a major portion of total solid waste production in the world and most of it is used in landfills. Dumping of these construction and demolition waste in landfill causes contamination of soil, water and air from toxic substances. Research by structural concrete engineers has clearly suggested the possibility of appropriately treating and reusing such waste as aggregates in new concrete. The aim of this paper is to explore the separation process of CDW and further use of recycled aggregates from construction and demolition waste (CDW) in concrete mixes. A review of most recent research and legislation applied in India is developed regarding the production of concrete by using these recycled aggregates.
Highlights
Rapid industrial development causes serious problems all over the world such as the depletion of natural aggregates and creates an enormous amount of waste material from construction and demolition activities
Construction and Demolition (C&D) waste constitutes a major portion of total solid waste production in the world, and most of it is used in landfills
Gunasekar et al / International Research Journal of Multidisciplinary Technovation /2019, 1(6), 465-469 shows that the recycled aggregates that are obtained from site-tested concrete specimen make good quality concrete
Summary
Rapid industrial development causes serious problems all over the world such as the depletion of natural aggregates and creates an enormous amount of waste material from construction and demolition activities. One way to reduce this problem is to utilize recycled concrete aggregates in the production of concrete. Recycled aggregates are the main component of old concrete and recycling operations have the added benefit of reducing landfill disposal. Research by concrete engineers has clearly suggested the possibility of appropriately treating and reusing such waste as aggregates in new concrete, especially for lower level applications. This study discusses recycled aggregates (RA) produced from C&D waste and their use in concrete construction. Recycled aggregates are treated with epoxy resin to reduce the water absorption. Gunasekar et al / International Research Journal of Multidisciplinary Technovation /2019, 1(6), 465-469 shows that the recycled aggregates that are obtained from site-tested concrete specimen make good quality concrete. The influence of aggregates of varying sizes on the compressive strength, split tensile and water absorption of concrete is presented in this paper
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