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

Author

Listed:
  • 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)

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%.

Suggested Citation

  • Barbara Sadowska-Buraczewska & Małgorzata Grzegorczyk-Frańczak, 2021. "Sustainable Recycling of High-Strength Concrete as an Alternative to Natural Aggregates in Building Structures," Sustainability, MDPI, vol. 13(8), pages 1-16, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:8:p:4286-:d:534707
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    References listed on IDEAS

    as
    1. Sajjad Pourkhorshidi & Cesare Sangiorgi & Daniele Torreggiani & Patrizia Tassinari, 2020. "Using Recycled Aggregates from Construction and Demolition Waste in Unbound Layers of Pavements," Sustainability, MDPI, vol. 12(22), pages 1-19, November.
    2. Grzegorz Ludwik Golewski, 2021. "The Beneficial Effect of the Addition of Fly Ash on Reduction of the Size of Microcracks in the ITZ of Concrete Composites under Dynamic Loading," Energies, MDPI, vol. 14(3), pages 1-14, January.
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