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Effect of pre-wetted light-weight aggregate on internal relative humidity and autogenous shrinkage of concrete

  • Ye Jiajun
  • Hu Shuguang
  • Wang Fazhou
  • Zhou Yufei
  • Liu Zhichao
Article

Abstract

This research indicates that the gradient of internal relative humidity (IRH) decreases rapidly within 1-day curing age in HPC. The amount of water imported by pre-wetted light-weight aggregate can regulate IRH of concrete. By importing a proper amount of water, the process of the decline of IRH can be delayed and the autogenous shrinkage can be reduced. The relationship among the amount of water imported by pre-wetted lightweight aggregate, IRH and AS was established. The result provides a new method of reducing early AS and enhancing early cracking resistance of HPC.

Key words

autogenous shrinkage pre-wetted lightweight aggregate internal relative humidity high performance concrete 

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References

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Copyright information

© Wuhan University of Technology 2006

Authors and Affiliations

  • Ye Jiajun
    • 1
  • Hu Shuguang
    • 1
  • Wang Fazhou
    • 1
  • Zhou Yufei
    • 1
  • Liu Zhichao
    • 1
  1. 1.School of Material Science and EngineeringWuhan University of TechnologyWuhanChina

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