Browse > Article
http://dx.doi.org/10.11112/jksmi.2012.16.6.073

Characteristics of Pore Structure and Chloride Penetration Resistance of Concrete Exposed to Freezing-Thawing  

Choi, Yoon Suk (강릉원주대학교 토목공학과)
Won, Min Sik ((주)제이엔티아이엔씨 기술연구소)
Yi, Seong Tae (인하공업전문대학 토목환경과)
Yang, Eun Ik (강릉원주대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.16, no.6, 2012 , pp. 73-81 More about this Journal
Abstract
Concrete structures are commonly exposed to freezing-thawing condition. This freezing-thawing action changes the pore structure of concrete, and it can reduce the durability of concrete. In this study, the change of the internal pore structure and durability of concrete due to freezing-thawing action are investigated. According to results, the excellent durability records were reported by the existing evaluation methods for all mixes. However, the pores, 50~100nm size in diameter, are increased in concrete specimens exposed to freezing-thawing action, and the chloride penetration resistance was significantly reduced. The linear relationship between pore structure and chloride penetration resistance was shown in water cured concrete. Meanwhile, the linear relationship was decreased when concrete is exposed to freezing-thawing condition. It is desirable to review the criterion of durability evaluation for concrete specimens exposed to freezing-fthawing and chloride attack condition, simultaneously.
Keywords
Freezing-Thawing; Pore structure; Chloride penetration resistance; Durability; Concrete degradation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 ASTM C 457, "Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete", 2010.
2 ASTM D 4284, "Standard Test Method for Determining Pore Volume Distribution of Catalysts by Mercury Intrusion Porosimetry", 2007.
3 Cai, H. and Liu, X., "Freeze-Thaw Durability of Concrete: Ice Formation Process in Pores", Cement and Concrete Research, vol. 28, No. 9, 1998, pp.1281-1287.   DOI   ScienceOn
4 Chendaprasirt, P., Jaturapitakkul, C. and Sinsiri, T., "Effect of fly ash fineness on compressive strength and pore size of blended cement paste", Cement and Concrete Composites, vol. 27, 2005, pp.425-428.   DOI   ScienceOn
5 Chung, C. W., Shon, C. S. and Kim, Y. S., "Chloride ion diffusivity of fly ash and silica fume concretes exposed to freezethaw cycles", Construction and Building Materials, vol. 24, 2010, pp.1739-1745.   DOI   ScienceOn
6 Kim, G. Y., Kim, M. H., Cho, B. S. and Lee, S. H., "The Evaluation of Surface Scaling and Resistance of Concrete to Frost Deterioration with Freezing-Thawing Action by Salt Water", Journal of the Korea Institute for Structural Maintenance Inspection, vol. 11, No. 6, 2007, pp.143-151. (in Korean)
7 Kim, J. C., Paeng, W. S. and Moon, H. Y., "Effect of the Pore Structure of Concrete on the Compressive Strength of Concrete and Chloride Ions Diffusivity into the Concrete", Journal of the Korea Concrete Institute, vol. 15, No. 2, 2003, pp.345-351.   DOI   ScienceOn
8 Korea Concrete Institute, Standard Specification for Concrete, 2009.
9 Kwon, S. J., Lee, H. S., and Park, S. G., "Effect of Additional Water on Durability and Pore Size Distribution in Cement Mortar", Journal of the Korea Institute for Structural Maintenance Inspection, vol. 16, No. 3, 2012, pp.78-83. (in Korean)
10 Lee, C. S., Lee, K. D., Kokubu, K. and Kwak, D. Y., "A Variation of Pore Structure of Concrete and its Relationship with Compressive Strength Cured with Various Temperatures", Journal of Korean Society of Civil Engineers, vol. 25, No. 6A, 2004, pp.1145-1150. (in Korean)
11 Mehta, P. K., "Concrete: Microstructure, Properties, and Materials", McGraw-Hill, 2005, p.32.
12 Moon, H. Y., Kim, H. S. and Choi, D. S., "The Characteristic of Capillary Pore and Chloride Diffusivity by Electrical Difference into Various Concrete", Journal of Korean Society of Civil Engineers, vol. 23, No. 5A, 2003, pp.969-976. (in Korean)
13 Tang, L. and Nilsson, L. O., "Rapid determination of the chloride diffusivity in concrete by applying an electrical field", ACI Material Journal, vol. 89, No. 1, 1992, pp.49-53.
14 Yang, C. C., "On the relationship between pore structure and chloride diffusivity from accelerated chloride migration test in cement-based materials", Cement and Concrete Research, vol. 36, 2006, pp.1304-1311.   DOI   ScienceOn
15 Yang, E. I., Choi, Y. S., "Characteristics of Pore Structures and Compressive Strength in Calcium Leached Concrete Specimens", Journal of the Korea Concrete Institute, vol. 23, No. 5, 2011, pp.647-656. (in Korean)   DOI   ScienceOn
16 Yang, E. I., Kim, M. Y., Yang, J. K., Park, H. G. and Choi, Y. S., "A Study on Long-Term Mechanical Properties and Durability in Metakaolin Concrete Bridge Deck", Journal of the Korea Institute for Structural Maintenance Inspection, vol. 15, No. 3, 2011, pp.125-133. (in Korean)