EXPERIMENTAL STUDIES ON COMPRESSIVE STRENGTH OF HPC SUBJECT TO HIGH-TEMPERATURE BASED ON MICROSTRUCTURE ANALYSIS

Dong Xiangjun; LüChaokun

doi:10.13204/j.gyjz201109020

Volume 41 Issue 9

Dec. 2014

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Dong Xiangjun, LüChaokun. EXPERIMENTAL STUDIES ON COMPRESSIVE STRENGTH OF HPC SUBJECT TO HIGH-TEMPERATURE BASED ON MICROSTRUCTURE ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(9): 90-93. doi: 10.13204/j.gyjz201109020

Citation:

Dong Xiangjun, LüChaokun. EXPERIMENTAL STUDIES ON COMPRESSIVE STRENGTH OF HPC SUBJECT TO HIGH-TEMPERATURE BASED ON MICROSTRUCTURE ANALYSIS[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(9): 90-93. doi: 10.13204/j.gyjz201109020

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EXPERIMENTAL STUDIES ON COMPRESSIVE STRENGTH OF HPC SUBJECT TO HIGH-TEMPERATURE BASED ON MICROSTRUCTURE ANALYSIS

doi: 10.13204/j.gyjz201109020

1.
Zhejiang Academy of Building Research &Design,Hangzhou 310012,China

Received Date: 2010-09-25
Publish Date: 2011-09-20

Abstract

Abstract

The experiment of microstructure SEM and compressive strength of HPC after exposure to hightemperatures was performed and the relationship between microstructure and mechanical properties of HPC was investigated. The results show that the variation of microstructure in concrete is in conformity with the change in mechanical properties. With the temperature increased, concrete aggregates change from compact to loose, the microcrack is increased and interconnected in quantity and width, and the mechanical properties are decreased accordingly. The vapor pressure of inner-concrete is decreased due to interconnected pores after polypropylene fiber melted, which can alleviate the damage of high temperature to concrete.
- microstructure,
- HPC,
- high temperature,
- compressive strength

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References(4)

References

[2] 钱在兹,吴慧.混凝土高温后的扫描电镜实验研究[J].福州大学学报: 自然科学版,1996,24(增刊) .

周志朝,杨辉.无机材料显微结构分析[M].杭州: 浙江大学出版社,2000.

[3] 董毓利.混凝土结构的火安全设计[M].北京: 科学出版社,2001.

[4] 董香军.纤维高性能混凝土高温、明火力学与爆裂性能研究[D].大连: 大连理工大学,2006.

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