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author:

Hu, Chang-Bin (Hu, Chang-Bin.) [1] (Scholars:胡昌斌) | Jin, Wang-Jie (Jin, Wang-Jie.) [2] | Sun, Zeng-Hua (Sun, Zeng-Hua.) [3]

Indexed by:

EI Scopus PKU CSCD

Abstract:

Based on field tests, the early-age temperature of cement concrete pavement was analysed firstly. Then combining existing studies and construction technique, models and parameters of hydration heat evolution, environment and heat exchange were selected. Using heat transfer theory and the finite difference method, a numerical simulation program of early-age temperature for cement concrete pavements is developed. The program can consider cement concrete material characteristics and construction technology in China. Then spot meteorological monitoring, temperature survey tests of early-age and long-term for full-size pavements and small slab experiments in the lab testified the program's applicability respectively. The parameter sensibility analyzed by the program shows that primary factors affecting early-age temperature of pavements are material structure parameters, ambient parameters, maintaining methods, paving time, concrete placement temperature, solar absorptivity and thermal conductivity which affect obviously by early age. It is recommended to study and modify the concrete hydration heat evolution model as well as the influence of admixture component on hydration time parameter and hydration slope parameter.

Keyword:

Cements Computer simulation Concrete mixtures Concrete pavements Concrete placing Finite difference method Heat transfer Hydration Numerical methods Numerical models Software testing Temperature distribution Thermal conductivity

Community:

  • [ 1 ] [Hu, Chang-Bin]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
  • [ 2 ] [Jin, Wang-Jie]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
  • [ 3 ] [Sun, Zeng-Hua]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350108, China

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Source :

Engineering Mechanics

ISSN: 1000-4750

CN: 11-2595/O3

Year: 2013

Issue: 4

Volume: 30

Page: 175-183

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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