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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.20 No.6
- 발행연도
- 2017.1
- 수록면
- 705 - 710 (6page)
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초록· 키워드
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The effectiveness of mineral additives in suppressing alkali-silica reactivity has been studied in this work. Experimentation has been performed in accordance with the procedures prescribed in ASTM C 1567. In the scope of the investigation, a quarry aggregate which was reactive according to ASTM C 1260 was tested. In the experimental program, prismatic mortar specimens measuring 25×25×285 mm were produced. Ten sets of production, three specimens for each set, were made. Length changes were measured at the end of 3, 7, 14 and 28 days and then expansions in percentage have been calculated. Fly ash, silica fume, and metakaolin have been used as cement replacement in different ratios for the testing of the alkali-silicate reactivity of the aggregate. In the mixes performed, the replacement ratios were 20%, 40%, and 60% for the fly ash, and 5%, 10%, and 15% for the silica fume, and 5%, 10%, and 15% for the metakaolin. Mixes without mineral additives were also produced for comparison. The beneficial effect in suppressing alkali-silica reactivity is highly noticeable as the replacement ratios of the mineral additives increase regardless of the type of the mineral additive used. Being more concise, the optimum concentrations of using silica fume and metakaolin in mortar in suppressing ASR is 10%, respectively, while it is 20% for fly ash.
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참고문헌 (42)
참고문헌 신청
Abbas, S. / 2017 / Potential of rice husk ash for mitigating the alkali-silica reaction in mortar bars incorporating reactive aggregates / Constr. Build. Mater. 132:61~70
1998 / State-of-the-Art Report on Alkali-Aggregate Reactivity / ACI 221, American Concrete Institute
Afshinnia, K. / 2015 / Efficiency of ternary blends containing fine glass powder in mitigating alkali-silica reaction / Constr. Build. Mater. 100:234~245
Ansah, J. S. / 2014 / Calcined clay pozzolan as an admixture to mitigate the alkali-silica reaction in concrete / J. Mater. Sci. Chem. Eng. 2:20~26
Aquino, W. / 2001 / The influence of metakaolin and silica fume on the chemistry of alkali-silica reaction products / Cement Concrete Compos. 23(6):485~493
1998 / State-of-the-Art Report on Alkali-Aggregate Reactivity / ACI 221, American Concrete Institute
Afshinnia, K. / 2015 / Efficiency of ternary blends containing fine glass powder in mitigating alkali-silica reaction / Constr. Build. Mater. 100:234~245
Ansah, J. S. / 2014 / Calcined clay pozzolan as an admixture to mitigate the alkali-silica reaction in concrete / J. Mater. Sci. Chem. Eng. 2:20~26
Aquino, W. / 2001 / The influence of metakaolin and silica fume on the chemistry of alkali-silica reaction products / Cement Concrete Compos. 23(6):485~493
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