신뢰성 해석을 통한 탄산화에 노출된 타설이음부 및 균열부 콘크리트의 내구수명 평가

A Service Life Prediction for Joint and Cracked Concrete Exposed to Carbonation Based on Stochastic Approach

In this study, field survey of carbonation for RC column in city is carried out and carbonation behavior in sound, joint, and cracked concrete is also analyzed. Futhermore, probability of durability failure with time is calculated through considering probability variables such as concrete cover depth and carbonation depth which are obtained from field survey. The probability of durability failure in cracked concrete with considering crack width and time is also calculated and service life is predicted based on intended failure probability in domestic specification. Through this study, it is known that service life in a RC column is evaluated differently for local conditions and each service life is rapidly decreased with decrease in cover depth and increase in crack width.