Performance Evaluation of Sustainable Concrete Containing Mine Tailing Waste and Dolomite Waste

Abstract

Mining waste disposal is a huge environmental concern all over the world. The vast majority of this waste is dumped openly in ground and alongside the roads, causing hazards such as pollution (water and air), contaminating the soil and vegetation. The management of the large amount of waste in order to avoid adversities is a significant challenge for the society. Due to the growing concern of the effective waste management and non-availability of the natural resources for concrete production. The efforts are being made in the construction industry for utilization of these wastes in sustainable production of the concrete. Concrete is an incredibly adaptable material that has demonstrated the noteworthy affinity for absorbing a wide range of solid industrial waste as replacement of the cement and natural river sand. Despite the fact that a number of the studies has been conducted on the tailing waste and dolomite waste, most of the studies are available of the different type of tailing waste as a substitute of the natural river sand and dolomite waste as a cement substitute. A very less studies are available on zinc tailing waste as partial substitute of the cement replacement and dolomite waste as substitute of the river sand. In this study, the zinc tailing waste was used as partial substitute of cement and dolomite waste as partial/full substitute of natural river sand. In the study, six different series has been casted with two different w/c ratios (0.4 and 0.5) to assessed the effect of the zinc tailing waste and dolomite waste. The fresh, mechanical, durability and microstructural properties of concrete mixes has been investigated along with the sustainability and cost assessment of concrete mixes. Contd.... newline