A study on Probability-based Durability Design of Concrete Structures subjected to Chloride Attack

확률론적 방법을 적용한 콘크리트 구조물의 염해 내구성 설계에 관한 연구

A probability-based durability design which minimizes the uncertainties on durability parameters of concrete is proposed for reinforced concrete structures subjected to chloride attack. The uncertainties of various factors such as water-cement ratio, curing temperature, age of concrete and the variation of these factors which affect chloride ion diffusion are considered. For the durability design, a probability-distribution function for each factor is obtained and a program which combines Fick's 2nd law and Monte Carlo simulation is developed. The durability design method proposed in this study considers probability of durability limit and probability of the concentration of chloride ion, so that the probability-based deterioration prediction is possible.