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http://dx.doi.org/10.14190/JRCR.2016.4.3.259

Analysis for Effect of Diffusion Parameter with Time-dependent Diffusion Coefficient on Service Life Considering Deterministic and Probabilistic Method  

Kwon, Seung-Jun (Department of Civil Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.4, no.3, 2016 , pp. 259-268 More about this Journal
Abstract
The service life evaluation in RC(Reinforced Concrete) structure exposed to chloride attack can be classified into deterministic and probabilistic method, and it significantly varies with design parameters. The present work derives PDF (Probability of Durability Failure) and the related service life considering time-dependent diffusion coefficient and internal parameters such as reference diffusion coefficient, critical chloride content, and time-exponent. When critical chloride content increases to 133.3%, the changing ratios of service life are 134.0~145.4% for deterministic method and 149.2%~152.5% for probabilistic method, respectively. In the case of increasing time-exponent to 200%, they increase to 323.8% for deterministic method and 346.0% for probabilistic method. Through adopting time-diffusion coefficient for probabilistic method, reasonable service life evaluation can be achieved, and it is also verified that increasing time-exponent through mineral admixture is very effective to extension of service life in RC structure.
Keywords
Chloride attack; Service life; Probabilistic method; Diffusion coefficient; Critical chloride content; Mineral admixture; Time-exponent;
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Times Cited By KSCI : 1  (Citation Analysis)
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