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http://dx.doi.org/10.11112/jksmi.2014.18.5.019

Study on Cracking Causes and Patterns in Median Barrier and Guardrail Concrete in RC Bridge  

Choi, Se-Jin ((재)포항산업과학연구원, 강구조연구소)
Choi, Jung-Wook (KCI 공학연구소)
Kwon, Seung-Jun (한남대학교 건설시스템공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.5, 2014 , pp. 19-26 More about this Journal
Abstract
Concrete guide rail and median barrier are an attached RC member, however they are vulnerable to cracking due to slip form construction and large surface of member. In this study, causes and pattern of cracking are analyzed through assessment and NDT (Non-Destructive Technique) evaluation for concrete guide rail and median barrier on highway structure. For this work, analysis on drying shrinkage and hydration heat are performed considering installation period, and plastic shrinkage is also analyzed considering their environmental conditions. From the evaluation, plastic settlement around steel location, drying/ plastic shrinkage, and aggregate segregation are inferred to be the main causes of cracking in the structures. The crack causes and patterns are schematized and techniques of crack-control are suggested. Furthermore concrete guide rail/ median barrier in the bridge on the sea are vulnerable to cracking at early age so that special attentions should be paid at the stages of material selection and construction.
Keywords
Median barrier; Guide rail concrete; Crack at early age; Plastic shrinkage; Plastic settlement;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 NCHRP-National Cooperative Highway Research Program (2006), Report 500-Guidance for Implementation of the AASHTO Strategic High Way Safety Plan, TRB Board, 12-56.
2 Park, S. S., Kwon, S. J., Jung, S. H. (2012b), Analysis technique for chloride penetration in cracked concrete using equivalent diffusion and permeation, Construction and Building Materials, 29(2), 183-192.   DOI   ScienceOn
3 Park, S. S., Kwon, S. J., Jung, S. H., Lee, S. W. (2012a), Modeling of water permeability in early aged concrete with cracks based on micro pore structure, Construction and Building Materials, 27(1), 597-604.   DOI   ScienceOn
4 Park, S. S., Kwon, S. J., Song, H. W. (2011), Analysis technique for restrained shrinkage of concrete containing chlorides, Materials and Structures, 44(2), 475-486.   DOI
5 Park, S. W., Park, S. S., Hwang, I. B., Cha, S. J., (2012), A case study on cause analysis for longitudinal crack of duct slab in tunnel, Journal of the Korea Institute for Structural Maintenance and Inspection, 16(5), 19-28 (in Korean).   과학기술학회마을   DOI
6 Song, H. W., Kwon, S. J., Byun, K. J., Park, C. K. (2006), Predicting carbonation in early-aged cracked concrete, Cement and Concrete Research, 36(5), 979-989.   DOI   ScienceOn
7 Woo, K. S., Lee, G. D., Kim, S. U., Ko, M. G. (2000), Safety evaluation of concrete median barrier by computer simulation, Proceedings of KSCE, 1(2), 315-324 (in Korean).
8 Almusallam, A. A. (2001), Effect of environmental conditions on the properties of fresh and hardened concrete, Cement and Concrete Composites, 23(4-5), 353-361.   DOI
9 Emmons, P. H. (1994), Concrete Repair and Maintenance Illustrated, R.S. Means Company, 5-16.
10 Jeon, S. J., Choi, M. S., Kim, Y. J. (2007a), Failure mode of concrete barrier, Proceedings of KCI, 19(2), 329-332 (in Korean).
11 Jeon, S. J., Choi, M. S., Kim, Y. J. (2008), Test level of domestic concrete barrier, Proceedings of KCI, 20(1), 113-116 (in Korean).   과학기술학회마을
12 Kwon, S. J., Na, U. J., Park, S. S., Jung, S. H. (2009), Service life prediction of concrete wharves with early-aged crack : probabilistic approach for chloride diffusion, Structural Safety, 31(1), 75-83.   DOI   ScienceOn
13 Jeon, S. J., Choi, M. S., Kim, Y. J., Hyun, B. H. (2007b), Static test of precast concrete barrier-I Ultimate behavior and test level, Journal of KSCE, 27(6A), 891-899 (in Korean).   과학기술학회마을
14 KISTEC-Korea Infrastructure Safety Corporation (1999), Guidelines for Crack Evaluation and Repair/ Restrengthening in Reinforced Concrete Structures, TS-99-R5-010, 12 (in Korean).
15 Korea Remicon Association (2005), Improvement of Durability and Long Service-Life for Concrete Structure, Technical Report, 105-192.
16 Kwon, S. J., Park, S. S., Nam, S. H., Cho, H. J. (2007), A study on survey of carbonation for sound, cracked, and joint concrete in RC Column in Metropolitan City, Journal of the Korea Institute for Structural Maintenance and Inspection, 11(3), 116-122 (in Korean).   과학기술학회마을
17 Na, U. J., Kwon, S. J., Chaudhuri, S. R., Shinozuka, M. (2012), Stochastic model for service life prediction of RC structures exposed to carbonation using random field simulation, KSCE Journal of Civil Engineering, 16(1), 133-143.   과학기술학회마을   DOI
18 Ross, H. E. Sicking, Jr., D. L., Zimmer R. A., Michie, J. D. (1993), Recommended Procedures for the Safety Performance Evaluation of highway Feature, NCHRP report, TBR Board. 85-104.