Assessing the Portion of the Crack Length Contributing to Water Sorption in Concrete Using X-ray Absorption

Bradley Justin Pease, Jon Couch, Mette Rica Geiker, Henrik Stang, Jason Weiss

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Abstract

While it is generally known that cracks accelerate fluid movements, there is a need to quantify how cracks influence the controlling transport mechanism(s) for more accurate service life modeling. This paper describes an experimental approach using x-ray absorption measurements to quantify the influence of cracks with varying width and length on water sorption in concrete. Concrete wedge splitting specimens, conditioned to 50% relative humidity, were loaded to varying crack openings. Water sorption was monitored for ponded specimens with varying crack widths and lengths by taking multiple x-ray absorption measurements over time. The effect cracks have on sorption is discussed and compared to the behavior of pristine concrete. In addition, the maximum water sorption depth after one hour of exposure is compared to crack lengths determined by the cracked hinge model.
Original languageEnglish
Title of host publicationConcreteLife'09: Second International RILEM Workshop on Concrete Durability and Service Life Planning
Publication date2009
Publication statusPublished - 2009
EventConcreteLife '09 : 2nd International RILEM Workshop on Concrete Durability and Service Life Planning - Haifa, Israel
Duration: 1 Jan 2009 → …

Conference

ConferenceConcreteLife '09 : 2nd International RILEM Workshop on Concrete Durability and Service Life Planning
CityHaifa, Israel
Period01/01/2009 → …

Cite this

Pease, B. J., Couch, J., Geiker, M. R., Stang, H., & Weiss, J. (2009). Assessing the Portion of the Crack Length Contributing to Water Sorption in Concrete Using X-ray Absorption. In ConcreteLife'09: Second International RILEM Workshop on Concrete Durability and Service Life Planning