A model for predicting the relative chloride diffusion coefficient in unsaturated cementitious materials
| Autor: | Guang Ye, Yong Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Pore diameter Chloride diffusion 0211 other engineering and technologies Thermodynamics 02 engineering and technology Electrolyte Conductivity Chloride Degree (temperature) Water saturation Degree of water saturation 021105 building & construction medicine General Materials Science Diffusion (business) Physics::Chemical Physics Physics::Atmospheric and Oceanic Physics Modeling Building and Construction 021001 nanoscience & nanotechnology Cementitious material Cementitious 0210 nano-technology Pore structure medicine.drug |
| Zdroj: | Cement and Concrete Research, 115 |
| ISSN: | 0008-8846 |
| Popis: | An analytical model for predicting the relative chloride diffusion coefficient in cementitious materials at different degrees of water saturation is presented in this paper. The model is developed based on the Nernst-Einstein equation and conductivity of cementitious electrolyte, as well as on moisture distribution in the pore structure. Good agreement is found between the model and the experimental data. With the help of the model, the chloride diffusion coefficient of cementitious material at unsaturated state can be determined according to the chloride diffusion coefficient at saturated state, the degree of water saturation and the average pore diameter of the material. A detailed discussion about the inputs and outputs of the model is given in order to facilitate its application for engineering practice. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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