Evaluation Of Structural Performance Of Pervious Concrete Containing Waste Tire Rubbers

Abstract

Pervious concrete provides a sound solution for managing storm waters in built environments where the water runoff as well as the natural recharge of the groundwater is an important issue. The use of pervious concrete is also commonly related to other environmental benefits such as the urban heat Island reduction, traffic noise absorption, and pollutant filtering. At present the disposal of waste tires is becoming a major waste management problem in the world. Hence efforts have been taken to identify the potential application of waste tires in civil engineering projects.  In this context, our present study aims is to investigate the optimal use of waste tire rubber as fine aggregate in pervious concrete composite.  The properties of rubberized plain pervious concrete in terms of the mechanical properties and the permeability were investigated. Two types of rubber (crumb rubber and tire chips) were used in the production of rubberized plain pervious concrete mixtures which obtained by partially replacing the fine aggregate varying from 5% to 20% were considered as experimental parameters. The results are compared with non-rubberized pervious concrete (control) mixture. Rubber incorporated pervious concretes had lower compressive strength, splitting tensile strength, and modulus of elasticity with the increased percentage of replacement. Pervious concretes produced in this study fulfil this requirement as the minimum compressive strength being 4.2 MPa in the mix 20TC (tire chips). Permeability coefficients (K) of the rubberized pervious concretes fell between 0.025 and 0.61 cm/s which are recommended limits for pervious concretes.