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http://dx.doi.org/10.11112/jksmi.2015.19.5.067

Evaluation of Service Life in RC Column under Chloride Attack through Field Investigation: Deterministic and Probabilistic Approaches  

Kwon, Seung-Jun (한남대학교 건설시스템 공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.5, 2015 , pp. 67-74 More about this Journal
Abstract
RC (Reinforced Concrete) structures are considered as cost-benefit and durable however performances of structural safety and durability are degraded due to steel corrosion. Service life in RC structure is differently evaluated due to different local environmental conditions even if it is exposed to the same chloride attack. In the paper, 25 concrete cores from field investigation are obtained from 4 RC columns with duration of 3.5~4.5 years exposed to sea water. Through total chloride content measurement, surface chloride contents and apparent diffusion coefficients are evaluated. Service life of the target structure is estimated through deterministic method based on Fick's $2^{nd}$ Law and probabilistic method based on durability failure probability, respectively. Probability method is evaluated to be more conservative and relatively decreased service life is evaluated in tidal zone and splash zone over 40.0 m. Chloride penetration behavior with coring location from sea level and the present limitations of durability design method are investigated in the paper.
Keywords
Durability design; Deterministic method; Probability method; Apparent diffusion coefficient; Field investigation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Broomfield, J.P., Corrosion of Steel in Concrete: Understanding, Investigation and Repair, E&FN, 1977, pp.1-15.
2 RILEM, Durability Design of Concrete Structures, Report of RILEM Technical Committee 130-CSL, E&FN, 1994, pp.28-52.
3 CEB-FIP, Model Code for Service Life Design, The International Federation for Structural Concrete (fib), Task Group 5.6, 2006, pp.16-33.
4 Thomas MDA, Bentz EC, $life-365^{TM}$ Service Life Prediction $Model^{TM}$ and Computer program for predicting the service life and life-cycle costs of reinforced concrete exposed to chlorides, SFA, 2002.
5 ACI Committee 201, Guide to durable concrete, Manual of Concrete Practice Part 1. Detroit USA: American Concrete Institute, 1994.
6 Korea Concrete Institute, Concrete standard specification durability part, 2004.
7 JSCE-Concrete committee, Standard specification for concrete structures, 2002.
8 Park, S.S., Kwon, S.-J., Jung, S.H., Lee, S.W., "Modeling of water permeability in early aged concrete with cracks based on micro pore structure," Construction and Building Materials, 27(1), 2012, pp.597-604.   DOI   ScienceOn
9 Park, S.S., Kwon, S.-J., Jung, S. H., "Analysis technique for chloride penetration in cracked concrete using equivalent diffusion and permeation", Construction and Building Materials, 29(2), 2012, pp.183-192.   DOI   ScienceOn
10 Song, H.-W., Kwon, S.-J., "Evaluation of chloride penetration in high performance concrete using neural network algorithm and micro pore structure,"Cement and Concrete Research, 39(9), 2009, pp.814-824.   DOI   ScienceOn
11 Kwon, S.-J., Kim, S.C., "Concrete mix design for service life of RC structures exposed to chloride attack," Computers and Concrete, 10(6), 2012, pp.587-607.   DOI   ScienceOn
12 Maekawa, K., Ishida, T., Kishi, T., "Multi-Scale Modeling of Concrete Performance," Journal of Advanced Concrete Technology, 1(2), 2003, pp.91-126.   DOI
13 Maekawa, K., Ishida, T., Kishi, T., "Multi-Scale Modeling of Structural Concrete," Tylor&Francis, London and Newyork, 1st Edition, 2003, pp.291-352.
14 Song, H.-W., Pack, S.W., Lee, C.H., Kwon, S.-J., Service life prediction of concrete structures under marine environment considering coupled deterioration," Journal of Restoration Buildings and Monuments, 1(2), 2006, pp.265-284.
15 Yokozeki, K., Okada, K., Tutsumi, T., Watanabe, K., "Prediction of the service life of RC with crack exposed to chloride attack," Journal of Symposium: Rehabilitation of Concrete Structure, 10, 1998, pp.1-6.
16 DuraCrete Final Report, DuraCrete Probabilistic Performance based Durability Design of Concrete Structures, 2000.
17 Kwon, S.-J., Na, U.J., Park, S.S., Jung, S.H., "Service life prediction of concrete wharves with early-aged crack: probabilistic approach for chloride diffusion,"Structural Safety, 31(1), 2009, pp.75-83.   DOI   ScienceOn
18 Kwon, S.-J., Park, S.S., "A study on estimation for chloride diffusivity in cracked concrete in harbor structures through field survey," Journal of KSCE, 27(5A), 2007, pp.745-752.
19 EN 1991, Eurocode 1: Basis of design and actins on structures, CEN, 2000, pp.12-18.
20 AASHTO T260, Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials, 1997, pp.25-32.
21 Song, H.-W., Pack, S.W., Ann, K.Y.,"Probabilistic assessment to predict the time to corrosion of steel in reinforced concrete tunnel box exposed to sea water," Construction and Building Materials, 23(10), 2009, pp.3270-3278.   DOI   ScienceOn