초록

용어보기논문에서 용어와 풀이말을 자동 추출한 결과로, 시범 서비스 중입니다. AI-Helper

Abstract ▼ AI-Helper

Chloride diffusivity of concrete is a crucial material parameter in service life modeling and durability designing of marine concrete. Many researches to deal with the issue have been accomplished. The ways for approach were very various from the empirical solution obtained by experimental result to...

Chloride diffusivity of concrete is a crucial material parameter in service life modeling and durability designing of marine concrete. Many researches to deal with the issue have been accomplished. The ways for approach were very various from the empirical solution obtained by experimental result to image analysis to consider multi-scale modeling. One of the simpliest ways is to express this as a multi-factor function from the practical point of view, however, the effects of affecting factors on the chloride diffusivity of concrete were ambiguous in previous studies. Furthermore, the majority of these researches have not dealt with this issue combined with carbonation of concrete, although carbonation can significantly impact on the chloride diffusivity of concrete. The purpose of this study is to establish a fundamental approach to compute the chloride diffusivity of (non)carbonated concrete. The chloride diffusivity of concrete should be defined, based on the engineering and scientific knowledge of cement and concrete. The affecting parameters for chloride diffusivity are diffusivity in pore solution, tortuosity, micro-structural properties of hardened cement paste, volumetric portion of aggregate, and so on. These are taken into account in the calculation of the chloride diffusivity of noncarbonated concrete. For carbonated concrete, reduced porosity due to carbonation is calculated and this is used for calculating the chloride diffusivity. The results are compared with experimental data and published study.

주제어