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논문 기본 정보

자료유형
학술저널
저자정보
Guojun Ke (University of South China) Wengui Li (University of Technology Sydney) Ruyi Li (University of South China) Yuelin Li (University of Technology Sydney) George Wang (East Carolina University)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.7
발행연도
2018.11
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1,063 - 1,076 (14page)

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초록· 키워드

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The effects of different contents and particle sizes of waste glass powder on alkali–silica reaction (ASR) expansion of cementitious composite bar were investigated in this study. Waste glass powder with particle size less than 300 ㎛ exhibits an excellent mitigation effect on ASR expansion. With larger content and smaller particle size, the mitigation effect of waste glass powder on ASR expansion gradually increases. The mitigation effect of waste glass powder with particle size ranging from 38 to 53 ㎛ and 20% by weight of cement seems relatively better than that of fly ash. When the waste glass powder content reaches 30%, the mitigation effect is still effective and almost the same as that of fly ash. However, the waste glass powder with particle size larger than 300 ㎛ presents negative mitigation effect on ASR expansion when the replacement rate is larger than 30%. On the other hand, the waste glass powder and calcium hydroxide (CH) further react, and produce more calcium–silicate–hydrate gels, which apparently reduce the amount of CH. Moreover, the increasing content of waste glass powder results in a lower pH value in the pore solution of cementitious composite.

목차

Abstract
1 Background
2 Experimental Program
3 Results and Discussion
4 Microstructure and pH Value Measurement
5 Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2019-532-000216651