An Experimental Study on Flexural Strength of Reinforced Concrete Beams with 100% Recycled Concrete Aggregate


The following paper presents the results of an experimental investigation of the flexural strength of full-scale reinforced concrete beams constructed with both 100% recycled concrete aggregate (RCA) as well as conventional concrete (CC). This experimental program consisted of eight beams (four for each concrete type). The test parameters for this study include longitudinal reinforcement ratio and concrete type. The beams were tested under a simply supported four-point loading condition. The experimental cracking, yielding, and ultimate moment of the beams were compared with the ACI 318-11 and Eurocode 2-05 provisions and the modified compression field theory (MCFT) method. Furthermore, the experimental flexural strengths of the beams were compared with both flexural test databases of CC and RCA specimens. Results of this study show that the RCA beams have comparable ultimate flexural strength and approximately 13% higher deflection corresponding to the ultimate flexural strength of the CC beams.


Civil, Architectural and Environmental Engineering

Keywords and Phrases

Beams and girders; Bending strength; Concrete beams and girders; Concretes; Recycling; Conventional concrete; Experimental investigations; Experimental study; Longitudinal reinforcement; Modified compression field theories; Recycled concrete aggregates; Reinforced concrete beams; Ultimate flexural strength; Reinforced concrete; Aggregate; Experimental study; Strength; Structural component; Flexural strength

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Document Type

Article - Journal

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© 2015 Elsevier, All rights reserved.

Publication Date

01 Apr 2015