Modelling the abrasive wear of concrete for probabilistic service life prediction of hydraulic structures

Authors: M. Vogel, B. Klar, H.S. Müller
Paper category: conference
Book title: Concrete Durability and Service Life Planning – ConcreteLife’09
Editor(s): K. Kovler
Print ISBN: 978-2-35158-074-5
e-ISBN: 978-2-35158-085-1
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 400 – 407
Total Pages: 8
Language: English

Abstract: Regarding the durability of hydraulic structures, the mechanical wear of the concrete edge zones represents a key exposure. Abrasive wear of concrete in hydraulic structures generally causes a reduction in service life as well as high costs due to necessary repair work and corresponding production downtimes. The knowledge about abrasive mechanisms of concrete and its time development is still insufficient. Furthermore no standardized test method exists so far for the realistic verification of the abrasion resistance of concrete.
An appropriate method for testing the abrasion resistance of concrete was developed. In order to identify the relevant material parameters, which affect the abrasion resistance of concrete, typical hydraulic engineering concretes were investigated with respect to their abrasion behaviour. The time dependent abrasion of concrete has been experimentally analyzed in detail. These results formed the basis for the derivation of a sophisticated degradation model. With the help of the developed model and the use of statistical tools, it is now possible to predict the service life of hydraulic structures under abrasion loads.

Online publication: 2012-05-16
Publication Type: full_text
Public price (Euros): 0.00