Advances in concrete construction

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Effect of rubber particles on properties and frost resistance of self-compacting concrete

  • Miao Liu (Liaoning Technical University) ;
  • Jianhua Xiao (Liaoning Technical University) ;
  • En Yang (Pengshui Miao and Tujia Autonomous County Housing and Urban-Rural Development Committee) ;
  • Lijuan Su (Liaoning Technical University)
  • Received : 2022.11.28
  • Accepted : 2024.05.22
  • Published : 2023.11.25
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Abstract

In order to study the effect of rubber particle size and admixture on the frost resistance of self-compacting concrete, three self-compacting concrete specimens with equal volume replacement of fine aggregate by rubber particles of different particle sizes were prepared, while conventional self-compacting concrete was made as a comparison specimen. The degradation law of rubber aggregate self-compacted concrete under freeze-thaw cycles was investigated by fast-freezing method test. The results show that the rubber aggregate has some influence on the mechanical properties and freeze-thaw durability of the self-compacting concrete. With the increase of rubber aggregate, the compressive strength of self-compacting concrete gradually decreases, and the smaller the rubber aggregate particle size is, the smaller the effect on the compressive strength of the matrix; rubber aggregate can improve the frost resistance of self-compacting concrete, and the smaller the rubber particle size is, the more obvious the effect on the improvement of the frost resistance of the matrix under the same dosage. Through the research of this paper, it is recommended to use 60~80 purpose rubber aggregate and the substitution rate of 10% is chosen as the best effect.

Keywords

Acknowledgement

National Natural Science Foundation of China (NO. 52104132).

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