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HU Chang-bin, SUN Zeng-hua, WANG Li-juan. Characteristic and control method of early-age temperature field for cement concrete pavement[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 1-9.
Citation: HU Chang-bin, SUN Zeng-hua, WANG Li-juan. Characteristic and control method of early-age temperature field for cement concrete pavement[J]. Journal of Traffic and Transportation Engineering, 2013, 13(5): 1-9.
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Characteristic and control method of early-age temperature field for cement concrete pavement

  • School of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China

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  • Author Bio:

    HU Chang-bin(1974-), male, professor, PhD, +86-591-22865355, huchangbin@qq.com

  • Received Date: 2013-04-18
  • Publish Date: 2013-10-25
    Abstract
  • The control principles of early-age temperature field were put forward based on the temperature stress, built-in basic temperature, built-in temperature difference and curing temperature of cement concrete pavement.The specialized early-age temperature field numerical simulation program of cement concrete pavement was used, the sensitivities and influencing characteristics of pavement early-age temperature field parameters were researched, and the effectivenesses of pavement early-age temperature field control measures were evaluated.Analysis result shows that compared with material parameters, environment construction parameters are major factors effecting pavement early-age temperature characteristics.Appropriate paving time and environment condition may change the temperature difference between the top and the bottom of slab more than 20℃.Proper curing methods and curing materials may reduce the temperature of pavement more than 12 ℃.Concrete paving temperature, water cement ratio and cement content significantly effect built-in basic temperature.For specific temperature control target, the sensitivities of influencing parameters are not the same, field pavement early-age temperature simulation should be combined to balance the effects of control measures.

     

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