[1] Zhang Feng, Li Shuchen, Ye Jianshu, Li Shoukai, et al. Evolution model of concrete failure surfaceunder coupling effect of seawater freeze-thaw and erosion [J]. Journal of Southeast University (English Edition), 2011, 27 (2): 206-209. [doi:10.3969/j.issn.1003-7985.2011.02.019]

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Evolution model of concrete failure surfaceunder coupling effect of seawater freeze-thaw and erosion()

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

Volumn:

27

Issue:

2011 2

Page:

206-209

Research Field:

Traffic and Transportation Engineering

Publishing date:

2011-06-30

Info

Title:

Evolution model of concrete failure surfaceunder coupling effect of seawater freeze-thaw and erosion

Author(s):

Zhang Feng¹;  Li Shuchen¹;  Ye Jianshu²;  Li Shoukai¹

¹Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China
²School of Transportation, Southeast University, Nanjing 210096, China

Keywords:

concrete;  freeze-thaw;  wet and dry cycles;  erosion;  Ottosen strength criterion

PACS:

U311.2

DOI:

10.3969/j.issn.1003-7985.2011.02.019

Abstract:

In order to effectively assess the mechanical properties of concrete with freeze-thaw and seawater erosion, tests about basic mechanical properties of concrete after freeze-thaw and seawater erosion are conducted based on the large-scale static and dynamic stiffness servo test set. 50, 100, 200 and 300 cycles of freeze-thaw cycling are made on normal concrete, and the artificial seawater is produced. The reasonable wet and dry accelerate system is selected. 10, 20, 30, 40, 50 and 60 cycles of wet and dry cycling are made to concrete after freeze-thaw cycling. The degeneration law of the concrete elastic modulus and compressive strength is studied. The Ottosen tri-axial strength criterion considering cycles of freeze-thaw and wet and dry cycling is deduced based on uniaxial mechanical properties of concrete and damage theory. Experimental results show that with the increase in the number of wet and dry cycles and freeze-thaw cycles, the concrete axial compressive strength and the elastic modulus decline gradually. Tensile and compressive meridians of concrete shrink gradually. The research can be referenced for anti-crack design of actual structures eroded by seawater at cold regions.

References:

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Memo

Memo:

Biography: Zhang Feng(1978—), male, doctor, associate professor, zhangfeng2008@sdu.edu.cn.
Foundation items: The Natural Science Foundation of Shandong Province(No.ZR2009FQ020), the Ph.D. Programs Foundation of Ministry of Education of China(No.20100131120042).
Citation: Zhang Feng, Li Shuchen, Ye Jianshu, et al. Evolution model of concrete failure surface under coupling effect of seawater freeze-thaw and erosion[J].Journal of Southeast University(English Edition), 2011, 27(2):206-209.[doi:10.3969/j.issn.1003-7985.2011.02.019]

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