Computers and Concrete

  • 제32권4호
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  • Pages.383-392
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  • 2023
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Computational viscoelastic modeling of strain rate effect on recycled aggregate concrete

  • Suthee Piyaphipat (Department of Civil Engineering, Rajamangala University of Technology Thunyaburi) ;
  • Boonchai Phungpaingam (Department of Civil Engineering, Rajamangala University of Technology Thunyaburi) ;
  • Kamtornkiat Musiket (Department of Civil Engineering, Rajamangala University of Technology Thunyaburi) ;
  • Yunping Xi (Department of Civil and Architectural Engineering, University of Colorado)
  • 투고 : 2022.09.19
  • 심사 : 2023.06.09
  • 발행 : 2023.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The mechanical properties of Recycled Aggregate Concrete (RAC) with 100 percent Recycled Coarse Aggregate (RCA) under loading rates were investigated in depth. The theoretical model was validated utilizing the RAC elastic modulus obtained from cylindrical specimens subjected to various strain rates. Viscoelastic theories have traditionally been used to describe creep and relaxation of viscoelastic materials at low strain rates. In this study, viscoelastic theories were extended to the time domain of high strain rates. The theory proposed was known as reversed viscoelastic theory. Normalized Dirichlet-Prony theory was used as an illustration, and its parameters were determined. Comparing the predicted results to the experimental data revealed a high level of concordance. This methodology demonstrated its ability to characterize the strain rate effect for viscoelastic materials, as well as its applicability for determining not only the elastic modulus for viscoelastic materials, but also their shear and bulk moduli.

키워드

과제정보

The authors greatly acknowledge resources support from Rajamangala University of Technology Thunyaburi, Thailand and University of Colorado at Boulder, USA.

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