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논문 기본 정보

자료유형
학술저널
저자정보
Khaoula Akrout (National Engineering School of Tunis) Mounir Ltifi (National Engineering School of Tunis) Mongi Ben Ouezdou (National Engineering School of Tunis)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.4 No.2
발행연도
2010.12
수록면
109 - 112 (4page)

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초록· 키워드

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Part I of this study was devoted to the electrical accelerated chloride diffusion in mortars. In this second part, natural chloride diffusion has been investigated for four types of mortars under exposure to a 0.5 mol/L NaCl solution for a period of up to 35 days. Two different types of sand were used for the production of test samples: siliceous sand (used as a reference) and limestone sand (used in this study). The effect of water to cement ratio and exposure time on the diffusion coefficients of mortars was also investigated. In this study, the total and free chloride content and penetration depth of mortar were measured after immersion, and Fick’s second law of diffusion was fitted to the experimental data to determine the diffusion coefficient. Their results show that the use of crushed limestone sand in mortar had a positive effect on the chloride resistance. The apparent diffusion coefficient in all specimens was smaller than that in siliceous sand mortar. However, the chloride penetration of these mortars was increased as exposure time progressed.

목차

Abstract
1. Introduction
2. Testing conditions and measurements
3. Free and total chloride
4. Results and discussions
5. Conclusions
References

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