STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE

Chen Shudong; Sun Wei; Yu Hongfa; Zhang Yunsheng

doi:10.13204/j.gyjz201201025

Volume 42 Issue 1

Dec. 2014

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Chen Shudong, Sun Wei, Yu Hongfa, Zhang Yunsheng. STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 133-136. doi: 10.13204/j.gyjz201201025

Citation:

Chen Shudong, Sun Wei, Yu Hongfa, Zhang Yunsheng. STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 133-136. doi: 10.13204/j.gyjz201201025

Chen Shudong, Sun Wei, Yu Hongfa, Zhang Yunsheng. STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 133-136. doi: 10.13204/j.gyjz201201025

Citation:

Chen Shudong, Sun Wei, Yu Hongfa, Zhang Yunsheng. STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(1): 133-136. doi: 10.13204/j.gyjz201201025

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STUDY ON CARBONATION OF FLY ASH CONCRETE WITH FREEZE-THAW CYCLE

doi: 10.13204/j.gyjz201201025

1.
1. Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;
2.
2. Zhejiang College of Construction,Hangzhou 311231,China;
3.
3. Department of Materials Science and Engineering,Southeast University,Nanjing 210096,China

Received Date: 2011-02-13
Publish Date: 2012-01-20

Abstract

Abstract

Carbonation of high performance concrete under freeze-thaw cycles was studied with different fly ash proportion(0%,20%,40%,60%);the new rules to estimate carbonation of concrete under freeze-thaw cycles were defined.The influence of different fly ash proportion and different freeze-thaw damage on carbonation was analyzed quantitatively by image processing techniques.Experiment results showed that the carbonation of concrete after freeze-thaw cycles was different from the traditional carbonation of concrete.The traditional testing method using carbonation depth could not express new feature of carbonation after freeze-thaw damage.And the new testing method using carbonation area could better express the carbonation law.The carbonation area and fly ash proportion subject quadratic equation =45.12-1.35FA+0.035FA2;and the carbonation area and freeze-thaw damage degree linear equation =35+0.306x.The research on the carbonation of concrete under freeze-thaw cycles possesses the real meaning to the structure durability and life prediction of concrete in the freeze-thaw area.
- fly ash concrete,
- freeze-thaw cycle,
- carbonation,
- image processing

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References(7)

References

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