Time-dependent Probability Assessment for Chloride Induced Corrosion of RC Structures Using the Third-Moment Method
Artikel i vetenskaplig tidskrift, 2015

This paper presents the time-dependent probability of chloride-induced corrosion of reinforced concrete (RC) structures in marine environments. By using the third-moment (TM) method with improved analytical solutions, the stochastic models of corrosion initiation of reinforcing steel, along with the consequent surface cracking of concrete cover are proposed. The different effects of various influencing factors (including early-age micro crack or initial defect of concrete, etc.) on the time-dependent probability of corrosion initiation and surface cracking are also discussed. It is shown that the TM method developed in the paper is simpler and more efficient than traditional approaches such as Monte Carlo (MC) in analyzing the corrosion-induced probability. It is also shown that the distribution of influencing factors has little or almost no effect on the failure probability, whereas the mean and the coefficient of variation of basic variables affect it to various extents. Based on the detailed analysis, some conclusions with implications for engineering practice are drawn.

RC structures

the TM method

Stochastic model

Chloride-induced corrosion

Time-dependent probability

Författare

Xiaogang Zhang

Shenzhen University

Chalmers University of Technology

Jiao Wang

Kanagawa University

Yangang Zhao

Kanagawa University

Luping Tang

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

F. Xing

Shenzhen University

Construction and Building Materials

0950-0618 (ISSN)

Vol. 76 232-244

Ämneskategorier

Materialteknik

Samhällsbyggnadsteknik

Styrkeområden

Building Futures

Materialvetenskap

DOI

10.1016/j.conbuildmat.2014.10.039