|Table of Contents|

[1] Li Guo, Dong Lei, Wang Dan, Yan Chenghua, et al. Negative effect improvement of accelerated curingon chloride penetration resistance of ordinary concrete [J]. Journal of Southeast University (English Edition), 2017, 33 (1): 79-85. [doi:10.3969/j.issn.1003-7985.2017.01.013]

Negative effect improvement of accelerated curingon chloride penetration resistance of ordinary concrete()

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

2017 1
Research Field:
Materials Sciences and Engineering
Publishing date:


Negative effect improvement of accelerated curingon chloride penetration resistance of ordinary concrete
Li Guo1 Dong Lei1 Wang Dan1 Yan Chenghua2
1State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
2Jiangsu Dongpu Tubular Pile Co., Ltd., Lianyungang 222346, China
negative effect improvement chloride penetration resistance ordinary concrete accelerated curing
Four mineral admixture concrete specimens were fabricated to study the negative effect improvements of accelerated curing on the chloride penetration resistance of ordinary concrete. After reaching different initial strengths, the specimens were placed in 40, 60, or 80 ℃ water tanks for accelerated curing. The Coulomb values of the specimens were measured with ASTM C1202 experiment at 28, 100, 200, and 300 d. Partial specimens were also selected for rapid chloride ion migration coefficient and mercury intrusion porosimetry experiments. The experimental results show that the accelerated curing for ordinary concrete linearly deteriorates the chloride penetration resistance, whereas the incorporation of mineral admixtures improves the concrete microscopic pore-structures and negative effects. An upper temperature limit of 60 ℃ of the accelerated curing is suitable for obtaining superior chloride penetration resistance for the mineral admixture concrete. Pre-curing at a normal temperature of 20 ℃ is beneficial for improving the negative effect, which is also alleviated with increasing testing age as a result of the successive hydration of binder materials in concrete.


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Biography: Li Guo(1973—), male, doctor, associate professor, guoli@cumt.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51178455), the Transformation Program of Science and Technology Achievements of Jiangsu Province(No.BA2015133).
Citation: Li Guo, Dong Lei, Wang Dan, et al. Negative effect improvement of accelerated curing on chloride penetration resistance of ordinary concrete[J].Journal of Southeast University(English Edition), 2017, 33(1):79-85.DOI:10.3969/j.issn.1003-7985.2017.01.013.
Last Update: 2017-03-20