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- aggregation classification "C1".
- aggregation creator B45083.
- aggregation creator B45084.
- aggregation creator B45085.
- aggregation creator person.
- aggregation date "2011".
- aggregation format "application/pdf".
- aggregation hasFormat 2920264.bibtex.
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- aggregation language "eng".
- aggregation publisher "Ghent University, Department of Structural engineering".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Technology and Engineering".
- aggregation title "Study on non-steady-state chloride diffusion coefficient of cement-based materials".
- aggregation abstract "Chloride non-steady-state diffusion coefficient is an indicator of chloride resistance of cement-based materials and service life prediction of concrete structure subjected to chloride environment. Many testing methods have been developed to measure the chloride transport in concrete. NT Build 443 is a widely used natural diffusion testing method, but time consuming. Analysis of the basic theory of NT build 443 shows that free chloride profile, instead of total chloride profile, should be used for the curve-fitting to the Fick’s second law. Electrical field is often used to accelerate chloride transport in concrete. NT build 492 is one of the most used electrical accelerated methods. 12 concrete mixtures with different w/b ratios and different supplementary cementing materials were cast for study. Electrical accelerated test was carried out following NT build 492, and natural diffusion test was carried out following NT build 443. For diffusion specimens, free and total chloride profiles are determined respectively. Results show that diffusion coefficient obtained by curve-fitting of free chloride profile is 0.76 times as that obtained from NT build 443, and 0.61 times as that obtained from NT build 492. What’s more, electrical accelerated method (NT build 492) gives a wrong ranking of chloride resistance of concretes containing different supplementary cementing materials with w/b ratio of 0.35.".
- aggregation authorList BK113543.
- aggregation endPage "7".
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- aggregation aggregates 2920265.
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