Sustainable Recycling of High-Strength Concrete as an Alternative to Natural Aggregates in Building Structures

Barbara Sadowska-Buraczewska and Małgorzata Grzegorczyk-Frańczak
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Barbara Sadowska-Buraczewska: Department of Structural Engineering, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland
Małgorzata Grzegorczyk-Frańczak: Civil Engineering Laboratory, Faculty of Civil Engineering and Architecture, Lublin University of Technology, 20-618 Lublin, Poland

Sustainability, 2021, vol. 13, issue 8, 1-16

Abstract: The application of recycled coarse aggregates (RCA) in high-performance concrete (HPC) was analyzed in the article. In the paper, the behavior of HPC with coarse recycled aggregate and natural coarse aggregate (NCA) was compared. Short-term experiments were conducted, including concrete deformation, deflection, load bearing capacity, and cracking of beams. The analysis involved reinforced concrete T-beams made in 100% of RCA or NCA. The studies indicated that the beams with recycled aggregate are characterized by greater deflection and 7.6% lower load bearing capacity in comparison to the beams with NCA. Substitution of coarse natural aggregate with RCA reduced the compressive and tensile strengths by 20 and 26 (%), whereas and the modulus of elasticity was decreased by 15%.

Keywords: recycled aggregates (RA); recycled coarse aggregates concrete (RCAC); high performance concrete (HPC); reinforced concrete beams (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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