RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES

LIU Kaihua; YAN Jiachuan; HU Qiong; ZOU Chaoying

doi:10.13204/j.gyjz201906040002

Volume 50 Issue 12

Mar. 2021

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LIU Kaihua, YAN Jiachuan, HU Qiong, ZOU Chaoying. RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 76-81,111. doi: 10.13204/j.gyjz201906040002

Citation:

LIU Kaihua, YAN Jiachuan, HU Qiong, ZOU Chaoying. RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 76-81,111. doi: 10.13204/j.gyjz201906040002

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RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES

doi: 10.13204/j.gyjz201906040002

LIU Kaihua¹,
YAN Jiachuan^2,3,
HU Qiong^2,3,
ZOU Chaoying^{2,3
,
,}

1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
2. Key Lab of Structures Behavior and Control Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
3. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China

Received Date: 2020-02-21
Available Online: 2021-03-31

Abstract

Abstract

Concrete structures serving in cold regions are inevitably affected by freeze-thaw cycles. In this paper, the compressive constitutive relationship of self-compacting concrete after 0, 50, 100, 150, 200, 250 and 300 freeze-thaw cycles was investigated. The results showed that with the increasing freeze-thaw cycles, the mass loss of specimens increased, and the relative dynamic elastic modulus decreased. The self-compacting concrete could achieve the level of F300. The elastic modulus and peak stress of the specimen remained stable in the early stage of freeze-thaw test, and decreased significantly after 150 freeze-thaw cycles. As the number of freeze-thaw cycles increased, the peak strain decreased first and then increased, and the lateral deformation coefficient decreased. Based on the test results, the normalized compressive constitutive model of self-compacting concrete after freeze-thaw cycles was established, which was in good agreement with the experimental results.
- freeze-thaw cycles,
- self-compacting concrete,
- constitutive model,
- compression,
- frost resistance

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References(18)

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