Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)
- Volume 16 Issue 1
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- Pages.1-8
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- 2013
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
DOI QR Code
A Study on Characteristic of Autogenous Shrinkage of High Strength Concrete
고강도 콘크리트의 자기수축 특성에 관한 연구
- Lee, Young-Jae (Dept. Civil Eng, college of engineering Kyungpook National University)
- 이영재 (경북대학교 공과대학 건축.토목공학부)
- Received : 2013.01.07
- Accepted : 2013.02.22
- Published : 2013.02.28
Abstract
In case that W/B is 20%, 30%, 40% respectively, the effects of additive and shrinkage reducing agent on the autogenous shrinkage for high strengthen concrete through the substitution of FA and SF analysis were obtained as following conclusions. When the ratio of FA increased, the compressive strength of high strengthen concrete is decreased in the early times. As the ratio of SF increase, the compressive strength also increased. Comparing with PC(Portland Cement) for 7 days curing, the strength is 13.8% of FA10 + SR0.5 and 19.2% of FA15 + SR0.5 decreased when W/B is 20%, and 6.1% of SF7.5 + SR0.5, 4.8% of SF15 + SR0.5, the strength are increased. In case that W/B is 30%, 13.1% of FA10 + SR0.5 19.1% of FA15 + SR0.5 the strength is decreased and 4.1% of SF 7.5 + SR0.5, 7.2% of SF15 + SR0.5 the strength are increased. In case of W/B 40%, 4.3% of FA10 + SR0.5, and 8.7% of FA15 + SR0.5, the strength is decreased and 3.3% of SF7.5 + SR0.5, 6.3% SF15 + SR0.5 the strength is increased. When the ratio of SR is 0.5%, autogenous shrinkage strain of OPC concrete appeared
Keywords
- Autogenous shrinkage;
- Drying shrinkage;
- High strength concrete;
- Silica fume;
- Shrinkage reducing agent