2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference

The Possibilities of Using the Agricultural Waste as Aggregate in Producing Sustainable Concrete

Dr. Sara Boudali, Concordia University (Presenter)
Dr. Ahmed Soliman, Concordia University
Dr. Sébastien Poncet, University of Sherbrooke
Dr. Stéphane Godbout, IRDA
Mr. Joahnn Palacios, IRDA
Dr. Bahira Abdulsalam, CIISolutions Composites Infrastructure Innovation Solutions Corp.

Concrete is the most widely used construction material. However, large volumes of natural resources and raw materials are being consumed in concrete production. This reduces concrete industry sustainability and increase its environmental negative impact. On the other hand, the agriculture sector is facing problems that require more efforts in agro-waste managements. To resolve this problem and binifit from agrowaste, in this study, the potential of using different types of agro-wastes in concrete as a total/partial replacement of aggregate will be evaluated. Three types of agro-wastes, which are categorized based on their fibrosity, fine and coarse, were tested. In addition, two types of binding materials, namely, ordinary cement and activated slag were used. Full characterization for different agro-waste and corresponding variations in compressive strength, density and microstructure were evaluated. Results showed that the compressive strength is directly affected by the physical properties of the incorporated agro-waste and the type of the binding material. Fibrous agro-wastes exhibited the highest strength with respect to other wastes. Successful use of such agro solid wastes as whole or partial replacement of natural aggregates contributes to energy saving, conservation of natural resources, and a reduction in the cost of construction materials.