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Study on moisture transport in concrete in atmospheric environment
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  • Journal title : Computers and Concrete
  • Volume 16, Issue 5,  2015, pp.775-793
  • Publisher : Techno-Press
  • DOI : 10.12989/cac.2015.16.5.775
 Title & Authors
Study on moisture transport in concrete in atmospheric environment
Zhang, Weiping; Tong, Fei; Gu, Xianglin; Xi, Yunping;
 Abstract
Moisture transport in concrete in atmospheric environment was studied in this paper. Based on the simplified formula of the thickness of the adsorbed layer, the pore-size distribution function of cement paste was calculated utilizing the water adsorption isotherms. Taking into consideration of the hysteresis effect in cement paste, the moisture diffusivity of cement paste was obtained by the integration of the pore-size distribution. Concrete is regarded as a two-phase composite with cement paste and aggregate, neglecting the moisture diffusivity of aggregate, then moisture diffusivity of concrete was evaluated using the composite theory. Finally, numerical simulation of humidity response during both wetting and drying process was carried out by the finite difference method of partial differential equation for moisture transport, and the numerical results well capture the trend of the measured data.
 Keywords
concrete;moisture transport;atmospheric environment;pore-size distribution;
 Language
English
 Cited by
1.
A simple practical method for determination of moisture transfer coefficient of mature concrete using a combined experimental-numerical approach,;;;;

Computers and Concrete, 2016. vol.18. 3, pp.367-388 crossref(new window)
1.
A simple practical method for determination of moisture transfer coefficient of mature concrete using a combined experimental-numerical approach, Computers and Concrete, 2016, 18, 3, 367  crossref(new windwow)
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