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| Experimental study on freeze-thaw damage model for concrete structure and members based on material |
| Zheng shansuo Wang Feng Fu Xiaoliang Wang Zisheng Gan Chuanlei |
| School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an710055,China |
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Abstract Based on Cai Hao model, through the theoretical derivation and combination with freezing and thawing of material test data, the calculation method of maximum hydrostatic pressure in the model is improved. 9 groups of material test are conducted to establish the fitting relationship between concrete water-cement ratio and the maximum freezing rate, and derive the simplified analytic calculation formula of maximum hydrostatic pressure. ANSYS finite element software is used to simulate the temperature field distribution of component section to get the corrected freezing and thawing damage model considered the temperature field. Finally, 2 groups of experiments is implemented to verify the accuracy and reliability of the improved freeze-thaw damage model, and the results show that the revised freezing and thawing damage model using dynamic elastic modulus as physical damage index can provide theoretical support for the freeze-thaw damage mechanism research of RC structure and members.
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Received: 24 June 2014
Published: 25 January 2016
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