Computers and Concrete

  • 제21권6호
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  • Pages.623-635
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  • 2018
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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Mechanical properties of pervious concrete with recycled aggregate

  • Zhu, Xiangyi (College of Water Conservancy and Hydropower Engineering, Hohai University) ;
  • Chen, Xudong (College of Civil and Transportation Engineering, Hohai University) ;
  • Shen, Nan (College of Civil and Transportation Engineering, Hohai University) ;
  • Tian, Huaxuan (College of Civil and Transportation Engineering, Hohai University) ;
  • Fan, Xiangqian (Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute) ;
  • Lu, Jun (Department of Materials and Structural Engineering, Nanjing Hydraulic Research Institute)
  • 투고 : 2017.12.06
  • 심사 : 2018.02.08
  • 발행 : 2018.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to research the influence of different recycled aggregate contents on the mechanical properties of pervious concrete, the experimental study and numerical simulation analysis of the mechanical properties of pervious concrete with five kinds of recycled aggregates contents (0%, 25%, 50%, 75% and 100%) are carried out in this paper. The experimental test were first performed on concrete specimens of different sizes in order to determine the influence of recycled aggregate on the compressive strength and splitting tensile strength, direct tension strength and bending strength. Then, the development of the internal cracks of pervious concrete under different working conditions is studied more intuitively by $PFC^{3D}$. The experimental results show that the concrete compressive strength, tensile strength and bending strength decrease with the increase of the recycled aggregate contents. This trend of reduction is not only related to the brittleness of recycled aggregate concrete, but also to the weak viscosity of recycled aggregate and cement paste. It is found that the fracture surface of pervious concrete with recycled aggregate is smoother than that of natural aggregate pervious concrete by $PFC^{3D}$, which means that the bridging effect is weakened in the stress transfer between the left and right sides of the crack. Through the analysis of the development of the internal cracks, the recycled aggregate concrete generated more cracks than the natural aggregate concrete, which means that the recycled aggregate concrete is easier to form a coalescence fracture surface and eventually break.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, NHRI

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피인용 문헌

  1. Residual Properties and Axial Bearing Capacity of Steel Reinforced Recycled Aggregate Concrete Column Exposed to Elevated Temperatures vol.7, pp.None, 2018, https://doi.org/10.3389/fmats.2020.00187
  2. Compressive Mechanical Properties of a Novel Recycled Aggregate Concrete with Recycled Lightweight Aggregate vol.2021, pp.None, 2018, https://doi.org/10.1155/2021/2134082
  3. Elasto-Damage constitutive modelling of recycled aggregate concrete vol.28, pp.1, 2018, https://doi.org/10.12989/cac.2021.28.1.013