FREE THERMAL EXPANSION STRAIN OF CONCRETE WITH DIFFERENT STRENGTH GRADES EXPOSED TO DIFFERENT RAISING TEMPERATURE RATES

Ni Jian-gang; Shi Xu-dong

doi:10.13204/j.gyjz200712024

Volume 37 Issue 12

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2007 > 37(12): 100-103

Wang Zhi-bin, Tao Zhong. DESIGN OF CONCRETE-FILLED THIN-WALLED STIFFENED STEEL TUBULAR STUB COLUMNS WITH SQUARE SECTIONS[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(12): 13-17. doi: 10.13204/j.gyjz200712003

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Ni Jian-gang, Shi Xu-dong. FREE THERMAL EXPANSION STRAIN OF CONCRETE WITH DIFFERENT STRENGTH GRADES EXPOSED TO DIFFERENT RAISING TEMPERATURE RATES[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(12): 100-103. doi: 10.13204/j.gyjz200712024

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FREE THERMAL EXPANSION STRAIN OF CONCRETE WITH DIFFERENT STRENGTH GRADES EXPOSED TO DIFFERENT RAISING TEMPERATURE RATES

doi: 10.13204/j.gyjz200712024

1.
Department of Civil Engineering,Tsinghua University Beijing 100084

Received Date: 2007-01-12
Publish Date: 2007-12-20

Abstract

Abstract

The free thermal expansion strain (FTES) is a very important one among deformation components of concrete under high temperature.There are marked differences among these FTESes of concrete with different strength grades when exposed to different raising temperature rates.Based on experimental results, the influence of different raising temperature rates on the FTES of concrete with different strength grades is analyzed in this paper and the corresponding calculation formulas are also given.They can be contributed to rationally establish a constitutive relationship of concrete under high temperature and accurately calculate mechanical behaviors of concrete when exposed to fire.
- concrete,
- raising temperature rate,
- strength grade,
- free thermal expansion strain

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References(9)

References

过镇海, 时旭东.钢筋混凝土的高温性能及其计算.北京: 清华大学出版社, 2003

南建林.温度- 应力耦合作用下混凝土力学性能的试验研究:[ 硕士学位论文].北京: 清华大学, 1994

过镇海.混凝土的强度和变形- 试验基础和本构关系.北京: 清华大学出版社, 1997

Shi Xudong, Tan T H, Tan K H, GUO Zhenhai.Concrete Constitut iveRelat ionships under Different Stress-Temperature Paths.J.Struct.Eng.,ASCE, 2002 (128): 1 511- 1 518

Hertz K D.Limits of Spalling of Fire-Exposed Concrete.Fire Saf etyJournal, 2003, 38 (2): 103- 116

周建康, 时旭东.高温下混凝土不均匀温度应变及指标温度的确定: [ 学术论文].北京: 清华大学, 2005

水中和, 曹蓓蓓.水泥混凝土热膨胀性能研究: [ 学位论文].武汉:武汉理工大学, 2005

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时旭东.高温下钢筋混凝土杆系结构的试验研究和非线性有限元分析: [ 博士学位论文].北京: 清华大学, 1992

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