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http://dx.doi.org/10.14190/JRCR.2018.6.3.153

Repair Cost Analysis for RC Structure Exposed to Carbonation Considering Log and Normal Distributions of Life Time  

Woo, Sang-In (Department of Civil Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.6, no.3, 2018 , pp. 153-159 More about this Journal
Abstract
Many researches have been carried out on carbonation, a representative deterioration in underground structure. The carbonation of RC (Reinforced Concrete) structure can cause steel corrosion through pH drop in concrete pore water. However extension of service life in RC structures can be obtained through simple surface protection. Unlike the conventional deterministic maintenance technique, probabilistic technique can consider a variation of service life but it deals with only normal distributions. In the work, life time-probability distributions considering not only normal but also log distributions are induced, and repair cost estimation technique is proposed based on the induced model. The proposed technique can evaluate the repair cost through probabilistic manner regardless of normal or log distribution from initial service life and extended service life with repair. When the extended service life through repair has log distribution, repair cost is effectively reduced. The more reasonable maintenance strategy can be set up though actual determination of life-probability distribution based on long term tests and field investigations.
Keywords
Carbonation; Probabilistic maintenance technique; Log distribution; Normal distribution; Repair cost;
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Times Cited By KSCI : 6  (Citation Analysis)
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