Recycling of Demolished Concrete and E-waste

S.P.Kale, H.I.Pathan

Abstract: Concrete is the most widely used construction material all over the world in view of its compressive strength, high mouldabilty, structural stability and economic considerations. It reduces the demand of new resources andcuts down the cost and effort of transport and production. Recycling is defined as the process of collecting and preparing recyclable materials and reusing them in their original form. Recycling is the act of processing the used material for use in creating new product. The processing of electronic waste in developing countries causes serious health and pollution problems due to the fact that electronic equipment contains some very serious contaminants such as lead, cadmium, and beryllium and brominates flame retardants. A few potential reuses of recovered non-metallic Printed Circuit Board have been reviewed. Many previous applications have used the recovered non-metallic materials as filler or for concrete and various framing materials. The main object of this project is to determine the compressive strength, tensile strength, flexural strength and bond strength by using fresh concrete material (FCM), waste concrete material (WCM), and E-waste material. Various mixes were prepared for carrying out the research by varying the proportions of cement, sand and aggregates. All mixes were designed for characteristic strength (fck) of M25. The compressive strength, tensile strength, Flexural strength and bond strength of concrete was tested in laboratory after 7 and 28 days. The specimens used for testing include cubes, cylinders and beams. In this project comparison between fresh concrete materials, waste concrete material, and E-waste concrete material for compressive strength, tensile strength, flexural strength and bond strength. The main aim of this study recommends the recycling of waste concrete as an aggregate and sand material in the production of new concrete.

Keywords: Waste material, Concrete, Recycled aggregates, Compressive strength, Tensile strength, Flexural strength, and Bond strength