Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6717522 | Construction and Building Materials | 2018 | 17 Pages |
Abstract
To accurately analyze the temperature and relative humidity (RH) distribution in concrete structures under ambient conditions, based on Krstulovic-Dabic hydration kinetics, an improved hydration model is proposed to geometrically bridge the relationship between hydration degree and microstructure of cementitious materials. Both the water content and hydration heat can be individually extracted from the model to evaluate the influence of ambient conditions variation. And the adsorption curve of concrete is acquired based on the microstructure obtained from hydration model and a redistribution of moisture content in pores is applied to evaluate the hydration process accordingly. Thus, the coupling effect of RH and temperature diffusion in concrete is decoupled in terms of hydration degree. An engineering verification indicates that the model can accurately predict the development of relative and temperature in concrete structures, and the construction procedure has significant influence on moisture and heat diffusion in concrete under ambient conditions.
Keywords
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Tian Ye, Jin Nanguo, Jin Xianyu,