Insitu electrical conductivity measurements to assess moisture and ionic transport in concrete (A discussion of critical features that influence the measurements)

Title: Insitu electrical conductivity measurements to assess moisture and ionic transport in concrete (A discussion of critical features that influence the measurements)
Author(s): Farshad Rajabipour, Jason Weiss, Dulcy M. Abraham
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: 43
Language: English

Abstract: The transport properties of concrete are known to influence the durability and long-term performance of concrete facilities. As a result, when models are developed to predict lifecycle performance, they require the input of the moisture and ionic transport properties of concrete. These life-cycle predictions have been shown to be sensitive to the material properties that are used in the simulation. The present generation of models typically use some default input parameters based on either historical observations or tests of material properties taken during construction. These properties may, however, fail to properly represent the quality of the ‘as-constructed’ concrete facility since they are frequently obtained from testing specimens that are prepared and cured differently than the actual structure. This paper presents the results of a preliminary study that investigates the potential use of insitu electrical property measurement to provide insight into quality of the ‘as-placed’ concrete. The paper provides a review of the critical features associated with using electrical conductivity to assess the quality and performance of concrete. Specifically, the effects of pore solution composition, drying, and geometry are discussed.

Online publication: 2004-03-25
Classification: Transport
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.049