Proceedings pro063 : RILEM TC 211-PAE Final Conference on Concrete in Aggresive Aqueous Environments - Performance, Testing and Modeling
|Title: RILEM TC 211-PAE Final Conference on Concrete in Aggresive Aqueous Environments - Performance, Testing and Modeling
Edited by M.G. Alexander and A. Bertron
Publication date: 2009
Concrete and cement-based materials increasingly must operate in aggressive aqueous environments, either natural or industrial in origin, in which these materials are subjected to processes of degradation whereby ion addition and exchange reactions occur, leading to a breakdown of the matrix microstructure and a weakening of the material. Sometimes this degradation can be extremely rapid and serious, such as in acidic environments, while in other cases degradation occurs over long periods. Consequences of material failure are usually severe – such failures adversely affect the well-being of human communities and disturb ecological balances. There are also large direct costs of maintaining and replacing deteriorated infrastructure, and indirect costs from suspension of production during maintenance work, which place a great burden on society.
The focus of RILEM TC 211-PAE was on addressing issues concerning performance of cement-based materials in aggressive aqueous environments. The TC’s objectives were the consideration of the scientific nature of the problem, and also an attempt to provide engineering approaches to addressing these problems in practice. It sought to furnish an understanding of concrete performance over a broad range of environments in terms of fundamental mechanisms and processes. The TC also sought to take a critical approach to existing standards, with a view to providing a framework within which improved standards and guidelines could be written.
The proceedings in these two volumes represent the papers and reports presented at the closing conference of RILEM TC 211-PAE, held in Toulouse, France, in June 2009. The papers were organized in 4 sessions, matching the different tasks of the 211-PAE working groups: (1) degradation mechanisms, (2) modeling, (3) test methods and (4) performances of materials. They represent contributions over a wide range of environments - sewage systems, ground waters, natural waters, rainwater, marine environments, agro-industrial media, chemical industries - and aggressive agents - sulphates, strong and weak acids, microorganisms, etc. All the papers were rigorously peer-reviewed by experts, primarily members of the technical committee who have specific expertise in the areas considered. These conference volumes will be a valuable addition to the literature on these subjects.
Author(s): M. Alexander, A. Bertron
Pages: XVII - XVIII
Volume 1 - Session 1: Degradation mechanisms
Volume 1 - Session 2: Degradation modeling and service life prediction
Volume 2 - Session 3: Test methods
Volume 2 - Session 4: Test methods
Volume 2 - Posters
Volume 2 - PSC special session
Volume 2 - 218-SFC special session