STUDY ON THE DAMAGE MECHANISM OF PORE STRUCTURE IN CONCRETE SUBJECTED TO FREEZE-THAW CYCLES

Authors

  • Ben Li Harbin Engineering University, College of Aerospace and Civil Engineering, Department of Solid Mechanics, Nantong Street 145, P. R. China
  • Kaiyuan Wang Harbin Engineering University, College of Aerospace and Civil Engineering, Department of Civil Engineering, Nantong Street 145, P. R. China
  • Jize Mao Harbin Engineering University, College of Aerospace and Civil Engineering, Department of Civil Engineering, Nantong Street 145, P. R. China
  • Qingyong Guo Harbin Engineering University, College of Aerospace and Civil Engineering, Department of Civil Engineering, Nantong Street 145, P. R. China

DOI:

https://doi.org/10.14311/CEJ.2015.02.0009

Keywords:

Concrete; freeze-thaw cycles; pore structure; damage mechanism

Abstract

It is well know that freeze-thaw cycles play the most significant role in the durability evolution in concrete structures, freeze-thaw cycles have been accounted as one of the major factors on the damage and demolition of concrete. Microscopic parameters have been used for describing the characterizations of damage in concrete under freeze-thaw actions by researchers. However, their models could not provide specific damage factors or parameters. In this paper, a new damage model and equation based on variations of pore structure in concrete is established. This new pore damage model is used for analysing freeze-thaw damage of concrete and validated by experiments. The results show that the measurement of pore structure becomes larger, the diameters of most probably pore structure, critical pore structure, and the variations of porosity increase with the process of freeze-thaw cycles. The pore damage factor or parameter is suitable for describing the mechanism of freeze-thaw damage. Furthermore, the damage results calculated by this new freeze-thaw damage equation, based on variations of pore structure in concrete gives an excellent correlation with experimental results. This pore damage equation was proved to be effective for evaluating the degradation of concrete which is subjected to freezing and thawing cycles in low or sub-zero regions.

Downloads

Download data is not yet available.

References

K F. Dunker and B G. Rubbat. Why American's bridges are crumbing[J].Scientific American, 1992(3):0066-0068.

MEHTA P K. Concrete durability: fifty year' s progress[A]. Proceeding of 2nd International Conference on Concrete Durability[C]. ACI SP126-1, 1991.0001-0033.

Z. P. Bazant. Mathematical model for freeze-thaw durability of concrete[J]. Journal of the American Ceramic Society, 1988(9):0776~0783.

Sun, W and Mu, R. Effect of chloride salt, freeze-thaw cycling and externally applied load on the performance of the concrete[J]. Cement Concrete Research, 2002, 7(12): 1859-1864.

Huang Shiyuan. Highllights of development of concrete technology in future some years in China [J]. Concrete, 2002, 149(3): 3-7. (in Chinese)

Song Yupu. Investigation on failure criterion of air entrained concrete under biaxial loads after freeze-thaw cycles[J]. Engineering Mechanics, 2007,24(6):134-141.(in Chinese)

Yu Hongfa and Sun Wei. Predicting method of concrete service life based on damage development equation[J]. Journal of Architecture and Civil Engineering. 2012, 24(9): 1165-1174.

Z. P. Bazant. Mathematical model for freeze-thaw durability of concrete[J]. Journal of the American Ceramic Society, 1988,71(9):776~783.

Cao, Dafu and Yang, Zhongwei. Experimental study on tensil properties of concrete after freeze-thaw cycles[J]. Journal of Building Materials, 2012, 15(1) 42-52. (in Chinese)

Guo, Zhonghui and Zhang, Xueqin. Experimental investigation of the complete stress-strain curve of concrete in monotonic load[A]. Research Laboratory of Earthquake and Blast Resistant Engineering Tsinghua University Press[C]. Beijing, 1981. 1-18. (in Chinese)

Shang, Huashuai and Song, Yupu. Experimental study of strength and deformation of plain concrete under biaxial compression after freezing and thawing cycles[J]. Cement Concrete Research, 2006, 36(10): 1857-1864.

Zhu, Jinpeng and Li Shucai. Mechanical property deterioration model for concrete in environment with freezing-thawing[J]. Journal of Architecture and Civil Engineering, 2009, 26(1): 62-67. (in Chinese)

Hong, Jingxiang and Miao, Changwen. “Degradation law of machanical properties of concrete subjected to freeze-thaw cycles[J]. Journal of Building Materials, 2012, 15(2): 173-178. (in Chinese)

Li, Zhonghua and Ba, Hengjing. Evaluation of study on the test method about the frost resistance of concrete and the appraising parameter[J]. Concrete, 2006, 200(6): 9-14. (in Chinese)

Liu, Minghui and Wang, Yuanfeng. Damage constitutive model of fly ash concrete under freeze-thaw cycles[J]. Journal of Materials in Civil Engineering, 2012, 24(9): 1165-1174. (in Chinese)

Zhang Shiping and Deng Min. Effect of pore structure on the frost resistance of concrete[J]. Journal of Wuhan University of technology, 2008, 30(6): 0056-0059. (in Chinese)

Meng Qingchao. Research of influencing factor between concrete durability and pore structure[D]. Harbin Institute of Technology, 2006.

HÊrsch T, Wittmann F H. Three-dimensional Numerical Concrete applied to investigate effective properties of compositematerials [A]. Proceeding of the Fourth International Conference on Fracture Mechanics of Concrete and ConcreteStructures [C].Cachan,France,Fracture Mechanics of Concrete and Concrete Structures Edited by Rene de Borst, 2001.0057-0064.

Wu Zhongwei. Green high performance concrete and innovation[J]. Journal of Building Materials, 1998, 1(1):0001-0007. (in Chinese)

Zhao Tiejun and Zhu Fangzhi. Experimental study and analysis on deterioration mechanism of damaged concrete induced by mechanical load[J]. Industrial Construction, 2012, 42(12), 0067-0071. (in Chinese)

Feng Naiqian and Zhao Tiejun. Characterizations of pore structure in concrete[J]. Science and Technology of Cement, 1999(10): 0099-0102. (in Chinese)

Duan, An and Qian, Jiaru. Experimental study on complete compressive stress-strian curve of concrete subjected to freeze-thaw cycles[J]. Concrete, 2008, 226(8), 0013-0016. (in Chinese)

Downloads

Published

2015-07-31

Issue

Vol. 24 No. 2 (2015)

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

How to Cite

STUDY ON THE DAMAGE MECHANISM OF PORE STRUCTURE IN CONCRETE SUBJECTED TO FREEZE-THAW CYCLES. (2015). Stavební Obzor - Civil Engineering Journal, 24(2). https://doi.org/10.14311/CEJ.2015.02.0009