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

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,...

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Bibliographic Details
Published in:Sustainability 2021-04, Vol.13 (8), p.4286
Main Authors: Sadowska-Buraczewska, Barbara, Grzegorczyk-Frańczak, Małgorzata
Format: Article
Language:English
Subjects:
Aggregates
Cement
Concrete
Construction industry
Curing
Deflection
High strength concretes
Masonry
Modulus of elasticity
Reinforced concrete
Sustainability
Sustainable development
T beams
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Summary: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%.
ISSN:2071-1050
2071-1050
DOI:10.3390/su13084286