Paper Title:
Corrected Diffusion Model of Chloride in Concrete and its Engineering Application
  Abstract

A multi-factor diffusion model of chloride in concrete was formulated, in which the hypothesis of Fick’s Law were corrected through parameter definition. The values of the parameters in the model were given for practical applications according to pilot calculation and analysis of mass data. By using this diffusion model, three calculation methods of concrete structure service life were further deduced, it includes definite value method, probability performance based method and time-dependent reliability based method. The service life prediction for the approach bridge of Huang-pu Bridge was carried on by using various prediction approaches mentioned above. The results showed that: time-dependent reliability based method can consider randomness of chloride diffusion coefficient and the depth of concrete covering layer, and the stochastic characteristic of environment variable can be easily taken into account too. By adjusting the target reliability, the prediction results are consistent with those of the other two methods.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
1886-1891
DOI
10.4028/www.scientific.net/AMR.189-193.1886
Citation
P. F. Xue, D. L. Mao, "Corrected Diffusion Model of Chloride in Concrete and its Engineering Application", Advanced Materials Research, Vols. 189-193, pp. 1886-1891, 2011
Online since
February 2011
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Price
$32.00
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