Bending Behavior Analysis of Recycled Aggregate Reinforced Concrete Beams According to CBA 93 and Eurocode2 Regulations

Abstract

Construction waste has been widely used in the civil engineering field in recent decades. This alternative serves to preserve natural resources in terms of aggregates and to reduce public landfill surfaces. However, its use until today has been limited to pavements, sidewalks, decorative elements, embankments, etc. The use of recycled concrete aggregates in the structure elements (beams and columns) is still under development, particularly concerning the development of standards and regulations that encourage and facilitate the usage of recycled concrete. This paper presents the adaptation of Eurocode and CBA 93 rules to predict the bending behavior of reinforced concrete beams in which natural aggregates of concrete are partially substituted by recycled concrete aggregates. The aggregate substitution rates varied from 0% to 100%.Theoretical results showed that the substitution rate does not affect the theoretically predicted values.