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Volume 34 Issue 4
Jul 2020
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Chinese Journal of High Pressure Physics  > 2020  >  34(4): 044205.
WANG Lixiao, CHEN Qidong, LIU Xin. Damage Evolution in Concrete Interfacial Transition Zone with Ultrasonic Dynamic Load[J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 044205. doi: 10.11858/gywlxb.20190833
Citation: WANG Lixiao, CHEN Qidong, LIU Xin. Damage Evolution in Concrete Interfacial Transition Zone with Ultrasonic Dynamic Load[J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 044205. doi: 10.11858/gywlxb.20190833
shu

Damage Evolution in Concrete Interfacial Transition Zone with Ultrasonic Dynamic Load

doi: 10.11858/gywlxb.20190833
  • 1.

    School of Mechanics, Soochow University, Suzhou 215000, Jiangsu, China

  • 2.

    School of Mechanical Engineering, Changshu Institution of Technology, Changshu 215500, Jiangsu, China

  • Received Date: 06 Sep 2019
  • Rev Recd Date: 29 Sep 2019
    Abstract
  • Concrete is a three-phase material composed of coarse aggregate, cement mortar and interfacial transition zone (ITZ). The ITZ is the weakest of the three phases and difficult to observe, but it has a significant impact on the efficiency of concrete crushing. In order to study the impact of ITZ on the damage performance of concrete crushing, the finite element model that reflects real mesoscopic structure of concrete matrix, aggregate shape, and ITZ was established on the Dynamic/Explicit model in ABAQUS. The results showed that the shape of coarse aggregate has a certain influence on the damage performance of concrete, and when the shape is convex polygonal, its damage resistance is the weakest. The damage resistance ability of concrete decreases with the decrease of ITZ strength. When ITZ strength is higher than 60% of mortar, the damage resistance ability gradually increases. As the thickness of the ITZ area increases, the damage resistance ability decreases.

     

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