Modeling of Chloride Diffusivity Coupled with Non-linear Binding Capacity in Sound and Cracked Concrete

The aim of this research is to establish a model that can predict chloride transport phenomena in sound and cracked concrete. The chloride diffusivity is formulated based on computed micropore structure, which considers tortuosity and constrictivity of porous network as reduction factors in terms of complex micropore structure and electric interaction of chloride ions and pore wall. In the real environment, concrete structures are not always crack-free, therefore chloride transport in cracked concrete is also simulated by section large void spaces in a control volume to represent the crack and by proposing a model of chloride diffusivity through the cracked region. The proposed models are implemented into a finite-element computational program DuCOM, which simulates the early-age development process of cementitious materials. The calculated concentration profiles of total chloride ions are verified through a comparison with experiments results.

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  • English

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  • Accession Number: 01144436
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 26 2009 7:20AM