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- Publisher
- Inderscience Publishers
- Copyright
- Copyright © Inderscience Enterprises Ltd. All rights reserved
- ISSN
- 1758-7328
- eISSN
- 1758-7336
- DOI
- 10.1504/IJSTRUCTE.2015.068000
- Publisher site
- See Article on Publisher Site
Abstract
Concrete structures are almost certain to contain cracks due to different physiochemical mechanisms. The formation of cracks is sure to affect its durability by altering ion and fluid transport properties. This includes the incursion of CO 2 into the structure. There presently exists no consensus on how to model the effects of structural cracking on carbonation progress within concrete structures. This paper first examines the concept of effective diffusion based on simultaneous diffusion of CO 2 through sound and cracked concrete and then considers a series diffusion concept where CO 2 diffuses first into the crack, and then outwards into the sound concrete. It is concluded that the effective diffusion concept is not valid for structurally cracked concrete. Instead, research efforts should be concentrated on developing a two–phase series diffusion model.
Journal
International Journal of Structural Engineering – Inderscience Publishers
Published: Jan 1, 2015