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A pragmatic prediction model for chloride ingress into concrete

Title: A pragmatic prediction model for chloride ingress into concrete
Author(s): M. Alexander
Paper category : conference
Book title: Third International RILEM Workshop on Testing and Modelling Chloride Ingress into Concrete
Editor(s): C. Andrade and J. Kropp
Print-ISBN: 2-912143-48-9
e-ISBN: 2912143578
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 65 - 76
Total Pages: 12
Nb references: 9
Language: English

Abstract: Chloride-induced corrosion remains the most costly form of durability failure of reinforced concrete structures. Research has shown that the process of chloride penetration through the microstructure of concrete is far more complex than would be suggested by simple approximations using Fick's laws of diffusion. Ideally a prediction model for chloride ingress needs to be able to quantify material, construction and environmental effects that influence the overall process. Given the complexity of chloride ingress and the interaction of chemical and physical processes, it is not surprising that many prediction models are empirically based. A pragmatic prediction model for chloride ingress was developed in South Africa that sought to be sufficiently broad to include all major material, construction and environmental influences. The process of construction of the prediction model had to allow for a number of material and environmental influences. In particular, factors such as initial curing, binder type, maturity of concrete, marine exposure zone and longer-term effects all had a significant impact on final recommendations for chloride resistant concrete.

Online publication: 2002-12-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143578.005

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