• The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Shear Strength of Reinforced Concrete Beams Using Recycled Coarse Aggregates without Stirrups

Author(s): Woosuk Kim, Thomas H.-K. Kang, Deuckhang Lee, Hajin Choi, and Yoon-Keun Kwak

Publication: Structural Journal

Volume: 117

Issue: 6

Appears on pages(s): 281-295

Keywords: construction waste; design; failure mode; recycled coarse aggregate; shear; strength

DOI: 10.14359/51728079

Date: 11/1/2020

Given current environmental concerns, attention has been directed toward the use of recycled coarse aggregates (RCAs) as a substitute for natural raw materials commonly consumed in construction. In regard to shear performance, limited studies currently exist. To this end, a total of 56 reinforced concrete beams without stirrups were tested to identify the effect of using RCA on shear strength. Failure governed primarily by shear span-depth ratios and partially by tension reinforcement ratios can significantly affect shear behavior of RCA concrete members. Test results obtained for this study were evaluated using current ACI 318 shear design equations. Overall, crack patterns and failure modes for the RCA concrete test specimens were similar to those of natural coarse aggregates (NCAs). On this basis, it was established that RCA concrete beams can be used in practice with confidence in satisfactory shear performance.