International Journal of Concrete Structures and Materials

  • 제7권1호
  • /
  • Pages.61-69
  • /
  • 2013
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  • 1976-0485(pISSN)
  • /
  • 2234-1315(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
권호 표지
DOI QR코드

DOI QR Code

Recycled Concrete Aggregates: A Review

  • McNeil, Katrina (School of Civil Engineering and Environmental Science, University of Oklahoma) ;
  • Kang, Thomas H.K. (Department of Architecture and Architectural Engineering, Seoul National University)
  • 투고 : 2012.12.30
  • 심사 : 2013.01.27
  • 발행 : 2013.03.30
⟨ 이전 논문 다음 논문 ⟩

초록

This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields comparable splitting tensile strength; (2) the modulus of rupture for RCA concrete was slightly less than that of conventional concrete, likely due to the weakened the interfacial transition zone from residual mortar; and (3) the modulus of elasticity is also lower than expected, caused by the more ductile aggregate. As far as the structural performance is concerned, beams with RCA did experience greater midspan deflections under a service load and smaller cracking moments. However, structural beams did not seem to be as affected by RCA content as materials tests. Most of all, the ultimate moment was moderately affected by RCA content. All in all, it is confirmed that the use of RCA is likely a viable option for structural use.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)

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