Chapter
May 15, 2014
Convective Depth of the Chloride Ion in Concrete Surfaces
Authors: Peng Liu, Ying Chen, Zhi-wu Yu [email protected], and Li SongAuthor Affiliations
Publication: Challenges and Advances in Sustainable Transportation Systems
Abstract
Based on the hypothesis of chloride ion concentration in concrete surfaces changing linearly, a convective depth model was established in this study. The rationality of the model was verified by experiment. In addition, a novel method for calculating the equivalent chloride ion content in the natural environment is proposed. The results showed that the diffusion of the chloride ion in concrete can be described by Fick's second law, and there was an exact convective depth value in a concrete surface. In general, the value of the convective depth is relative to the wetting-drying ratio of the environment and the permeability coefficient of the concrete. Compared with the water influence depth in concrete, the convective depth was shallow. Moreover, the equivalent chloride ion content in the environment was determined by the characteristics of the environment.
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© 2014 American Society of Civil Engineers.
History
Published online: May 15, 2014
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ASCE Technical Topics:
- Chemical compounds
- Chemicals
- Chemistry
- Chloride
- Concrete
- Dewatering
- Diffusion
- Diffusion (chemical)
- Diffusion (porous media)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Environmental engineering
- Linear functions
- Materials characterization
- Materials engineering
- Mathematical functions
- Mathematics
- Methodology (by type)
- Permeability (material)
- Research methods (by type)
- Salts
- Thermodynamics
- Transport phenomena
- Verification
- Waste management
- Waste treatment
Authors
Affiliations
Peng Liu
School of Civil Engineering, National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, Hunan, China
Ying Chen
School of Civil Engineering, National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, Hunan, China
School of Civil Engineering, National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, Hunan, China. E-mail: [email protected]
Li Song
School of Civil Engineering, National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, Hunan, China
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