- Freezing resistance of HPC with nano-SiO2
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- 论文类型： 期刊论文
- 发表时间： 2008-02-01
- 发表刊物： JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
- 收录刊物： SCIE、EI、ISTIC
- 卷号： 23
- 期号： 1
- 页面范围： 85-88
- ISSN号： 1000-2413
- 关键字： nano-SiO2; high-performance concrete; freezing resistance
- 摘要： The test of fast-freezing method is employed to research the freezing resistance of C60 and C80 high-performance concrete with nanometer-SiO2, and XRD and SEM are employed to analyze the mechanism of its influence. The experimental results show that the freezing resistance of high-performance concrete has been effectively improved. The compressive strength of C60, C70 and C80 high-performance concrete added with nano-SiO2 can be improved by 8%, 6% and 5% respectively, the weight loss can be reduced by 1%, 0.6% and 0.3% respectively and the relative dynamic elastic modulus can be improved by 7%, 4% and 6% respectively after the 300 times freeze-thaw cycle.
