2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Mr. Mohamed Afifi, McGill University (Presenter)
Concrete is the most widely used construction material in the world and is considered one of the largest water consuming industries as approximately 150 liters of water is required per cubic meter of concrete mixture. Recently, population explosion coupled with urbanization has raised the demand for water resulting in its scarcity making water a critical environmental issue that is limiting water supplies and water quality worldwide. On the other hand, with industrialization, the quantity of wastewater generated has soared up warranting appropriate measures for utilization and disposal.
This work addresses potential utilization of industrial wastewater in ordinary performance concrete. This study was conducted to investigate the possibility of saving water used in concrete mixtures and make use of produced wastewater domestically and industrially. Mixing water was utilized from wastewater from 7 different industrial plants: ceramic, marble, halva, jam and nestle factories. Non-treated effluents have been used as mixing water in concrete and mortar mixes utilized for preparing concrete & mortar cubes. Fresh concrete and Hardened concrete properties were assessed including slump, unit weight, compressive and flexural strength. The outcome uncovers that the utilization of wastewater from certain sources can produce mixes of comparable strength and durability when compared to control specimens created by tap water. Experimental work is backed up with a feasibility study, incorporating cost and resource savings to better judge the potential of the utilization of wastewater in concrete mixing.
Keywords: (Industrial Wastewater, Mixing Water, Mortar, Concrete)