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Durability indexes and their use in concrete engineering



Title: Durability indexes and their use in concrete engineering
Author(s): Mark G Alexander
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 21
Language: English


Abstract: Durability of reinforced concrete structures is a pervasive and serious problem worldwide. To address this problem, an engineering approach based on sound scientific principles has been developed, using so-called Durability Indexes. These indexes relate to transport processes of permeation, water absorption, and chloride ion conduction. They are measured in conceptually simple and relatively easy tests, which do not require expensive equipment, thus rendering them suitable for construction use. They are based upon the philosophy that durability will only be substantially improved when it is possible to measure related parameters in-situ that govern durability performance. This approach has been developed to the point where it can be used for material characterisation, for drafting durability specifications on a performance basis, as a means of site quality control, and as a basis for long-term predictions. The paper reviews the development of the approach, and gives examples of the use of durability indexes in practice. The status in South African concrete practice is reviewed, and future developments are outlined, including the need for internationalisation of this and similar approaches.


Online publication: 2004-03-25
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.101