Abstract
This paper experimentally investigated whether the replacement ratio of recycled coarse aggregate (r) has different influence on stress–strain relation of concrete with different strength grades. The studied concrete specimens had two strength grades of C30 and C50, each with r ratios of 0, 25%, 50%, 75% and 100%. Test results showed that r ratio had significantly different influence on compressive strength, peak strain (the strain at peak stress, ε0) and deformability (the ratio between ultimate strain and peak strain) of concrete with different concrete strengths. To account for such different influences, a stress–strain model of recycled aggregate concrete (RAC) was proposed by modifying key parameters in existing model of natural aggregate concrete (NAC), where r ratio and concrete strength were the main parameters. The proposed model was benchmarked against available test results of 58 RAC specimens.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.