Title: Model analysis of the transportation of chloride into concrete under dry-wet cyclic conditions

Authors: Dong Rongzhen, Wei Jun, Yu Jing

Addresses: School of Civil Engineering and Architecture, Central South University, Changsha, Hunan 410075, China. ' School of Civil Engineering and Architecture, Central South University, Changsha, Hunan 410075, China. ' School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China

Abstract: The dry-wet cyclic experimental method is designed to imitate the reinforced concrete corrosion in the natural environment. The polynomial model of chloride ions transporting inside the concrete is discussed and its numerical calculation is analysed through the reasonable differencing scheme, and the stability of the differencing scheme is discussed accordingly. The chloride concentration distribution in concrete can be obtained respectively by the chemistry titration method and calculated using the above model by selecting the parameters according to the concrete material property and the stability of differencing scheme. The statistical characteristic analysis and the relativity of the calculated value and the tested value both verify the accuracy of the model.

Keywords: concrete structures; transportation modelling; differencing scheme; dry-wet cyclic conditions; reinforced concrete; corrosion; chloride ingress.

DOI: 10.1504/IJMIC.2009.027073

International Journal of Modelling, Identification and Control, 2009 Vol.7 No.2, pp.185 - 189

Published online: 14 Jul 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article