Evaluation of Modulus of Elasticity of Plastic Aggregate Concrete

Abstract

Modulus of elasticity of a material is the ratio of applied stress to the corresponding strain within elastic limit. It indicates the resistance of a material to deformation. The elastic modulus of concrete can be calculated using empirical formulae provided by different codes. These formulae are based on the relation between elastic modulus of concrete and characteristic compressive strength. The strength of concrete depends on the proportions and modulus of elasticity of the aggregate. The codes are providing formulae for the determination of elastic modulus of conventional concrete. Replacement of materials in concrete is gaining attention all over the world nowadays. The applicability of these empirical formulae for such concretes are not clear. So, evaluating the elastic modulus of concrete with replacement components become essential. In this experimental study, the modulus of elasticity of plastic aggregate concrete is evaluated. Plastic aggregate concrete refers to the concrete mixed with PET bottle waste as replacement for coarse aggregates on various proportions. 5, 10, 15% of coarse aggregate are replaced with plastic aggregates and elastic modulus is studied.