Testing and modelling the chloride ingress in concrete

Title: Testing and modelling the chloride ingress in concrete
Author(s): J. Kropp
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: 19 - 28
Total Pages: 10
Language: English

Abstract: Reinforced or pre-stressed concrete structures became the most successful construction principle due to their versatile applicability and the common availability of the materials, in particular for outstanding and big projects in engineering infra structure. In view of the necessary huge financial investments the owners require information on the future maintenance costs and the minimum life time of these structures. As more and more challenging structures are built empirical data are insufficient, and analytical tools are sought to describe the future performance of corresponding structures under their prevailing service conditions, or, given a pre-determined minimum life span of serviceability, the design of a structure is based on the projected degradation.
Amongst the various physical, chemical and mechanical loads that limit the serviceability of a structure the ingress of chloride ions into concrete is one of the most serious factors inducing the corrosion of reinforcing steel, such as in marine structures, traffic infra structure subjected to de-icing salts or any case, where free chloride ions prevail. World wide efforts are ongoing to consider chloride attack on reinforced structures in the context of service life prediction and service life design, e.g. in view of forthcoming standardization.
RILEM TC 178 - TMC has addressed individual steps leading to the modelling of chloride ingress and service life prediction under chloride attack. For the third RILEM workshop and second TMC workshop on this topic the state of the art and prevailing shortcomings were discussed for several elements of models.

Online publication: 2002-12-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143578.002