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On-line Access: 2011-05-09

Received: 2010-09-18

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.5 P.360-367

http://doi.org/10.1631/jzus.A1000413


Relationship between chloride diffusivity and pore structure of hardened cement paste


Author(s):  Guo-wen Sun, Wei Sun, Yun-sheng Zhang, Zhi-yong Liu

Affiliation(s):  Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China

Corresponding email(s):   sunguowen_2003@163.com, sunwei@seu.edu.cn

Key Words:  Hardened cement paste, Chloride diffusivity, Porosity, Tortuosity factor, Constrictivity


Guo-wen Sun, Wei Sun, Yun-sheng Zhang, Zhi-yong Liu. Relationship between chloride diffusivity and pore structure of hardened cement paste[J]. Journal of Zhejiang University Science A, 2011, 12(5): 360-367.

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T1 - Relationship between chloride diffusivity and pore structure of hardened cement paste
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DOI - 10.1631/jzus.A1000413


Abstract: 
Based on effective media theory, a predictive model, relating chloride diffusivity to the capillary pores, gel pores, tortuosity factor, and pore size distribution of hardened cement, is proposed. To verify the proposed model, the diffusion coefficient of chloride ions, the degree of hydration, and peak radius of capillary pores of cement paste specimens were measured. The predicted results for chloride diffusivity were compared with published data. The results showed that the predicted chloride diffusivity of hardened cement paste was in good agreement with the experimental results. The effect of the evolution of pore structures in cement paste on chloride diffusivity could be deduced simultaneously using the proposed model.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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Open peer comments: Debate/Discuss/Question/Opinion

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YU Xia@Qingdao University<yewtree2008@126.com>

2011-06-03 22:37:25

This is a good paper!

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