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Coupling of hygro-thermal field in early-age concrete based on cement hydration
DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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In order to analyze the coupling effect of temperature and humidity fields in early-age concrete, a microstructure model of cement hydration incorporating fly ash based on Krstulovi-Dabi hydration kinetics formulas was proposed. In considering the hydration heat release and water consumption during the hardening process, as well as the influence of porosity on moisture diffusion coefficient,a coupled hygro-thermal model of early-age concrete was established, and verified through an experiment. The research results indicates that the coupled hygro-thermal model constructed based on the micro-structure information of cement hydration can accurately predict the time-dependent development of temperature and humidity field inside the early-age concrete. The research can theoretically support the investigation on the deformation and cracking of the early-age concrete.

Published: 01 August 2015
CLC:  TU 528.1  
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DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu. Coupling of hygro-thermal field in early-age concrete based on cement hydration. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2015, 49(8): 1410-1416.

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