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논문 기본 정보

자료유형
학술저널
저자정보
Kyle de Bruyn (Vesuvius) Eric Bescher (University of California at Los Angeles) Chris Ramseyer (University of Oklahoma) Seongwon Hong (Seoul National University) Thomas H.-K. Kang (Seoul National University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.11 No.1
발행연도
2017.3
수록면
59 - 68 (10page)

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초록· 키워드

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Mercury intrusion and nitrogen sorption porosimetry were employed to investigate the pore structure of calcium sulfoaluminate (CSA) and portland cement pastes with cement-to-water ratio (w/c) of 0.40, 0.50, and 0.60. A unimodal distribution of pore size was drawn for CSA cement pastes, whereas a bimodal distribution was established for the portland cement pastes through analysis of mercury intrusion porosimetry. For the experimental results generated by nitrogen sorption porosimetry, the CSA cement pastes have a smaller and coarser pore volume than cement paste samples under the same w/c condition. The relative dynamic modulus and percentage weight loss were used for investigation of the concrete durability in freeze–thaw condition. When coarse aggregate with good freeze–thaw durability was mixed, air entrained portland cement concrete has the same durability in terms of relative dynamic modulus as CSA cement concrete in a freeze–thaw environment. The CSA cement concrete with poor performance of durability in a freeze–thaw environment demonstrates the improved durability by 300 % over Portland cement concrete. The CSA concrete with good performance aggregate also exhibits less surface scaling in a freeze–thaw environment, losing 11 % less mass after 297 cycles.

목차

Abstract
1. Introduction
2. Experimental Methods
3. Results and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2017-532-002243732