SENSITIVITY ANALYSIS OF THE PARAMETERS USED IN A MULTIIONIC CHLORIDE INGRESS MODEL
A sensitivity analysis of the parameters involved in a multiionic reactive transport modelthat can be used, among other applications, to predict chloride ingress in concrete structures ispresented. The analysis is based on the calculation of the elasticity of each parameter using arigorous mathematical method. It was performed for two different test cases. The firstconcerns the penetration of chloride ions in saturated concrete during a simple pondingexperiment while the second one involves the influence of wetting and drying cycles onchloride ingress. The analysis indicates that porosity and tortuosity (i.e. ionic diffusioncoefficients) are the material parameters which have the most important impact on the modelpredictions. Boundary conditions were also found to have a significant influence on the outputof the model. On the other hand, simulations were found to be much less affected byparameters such as the initial pore solution chcmistry and the initial solid phase content of thehydrated cement paste.
J.Marchand D.Conciatori E.Samson M.Gaudry
CRIB - Department of Civil Engineering,Laval University,Quebec City,Canada SIMCO Technologies Inc.,Q CRIB - Department of Civil Engineering,Laval University,Quebec City,Canada SIMCO Technologies Inc.,Quebec City,Canada CRIB - Universite de Montreal,Montreal,Canada
国际会议
南京
英文
1063-1074
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）