Durability performance of waste granite and glass powder added concrete

摘要

Across the world, a large amount of waste is spawned from various industrial activities. Out of this huge quantity of waste, a little is recycled and rest is dumped in open lands. This paper deals with the use of potential solid waste in concrete, particularly granite powder originating from granite industries and discarded soda-lime glass powder obtain from waste glass bottles. Experimental study conducted in this research work examines the durability of blended concrete mixes, incorporating waste glass powder and granite powder at various substitution levels. The glass powder (GP) in 5%, 10%, 15%, 20% and 25%, and granite powder (GrP) in 10%, 20%, 30%, 40% and 50%, were added in the concrete mixes as a partial supplement of cement and sand, respectively. Durability performance of a series of blended mixes was evaluated for water absorption, water permeability, acid attack, sulphate attack, and rapid chloride penetration test (RCPT). Scanning electron microscope (SEM) and X-ray diffraction (XRD) were carried out for microstructure analysis. A significant improvement was observed in durability properties of concrete containing 15% GP and 30% GrP in place of cement and sand respectively. Results indicate improvement in water permeability and water absorption of glass granite blended concrete. Response of blended mix against sulphate and acid attack was quite better than control concrete mix. Value of RCPT was also encouraging for blended mixes. (C) 2020 Elsevier Ltd. All rights reserved.