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Pro083

Effect of different marine exposure conditions on chloride diffusion in concrete



Author(s): A. Dousti, R. Rashetnia, A. Almotahari, M. Shekarchi
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 795-804
Total Pages: 9
Language: English


Abstract: 
This paper reports the results of a study conducted to evaluate the performance of concrete exposed to different conditions in a coastal area. Six types of concrete in mix proportion were exposed in the atmosphere, Soil, tidal, submerged and splash zones of a tropical marine environment in Persian Gulf for times up to 3 years and the chloride ion ingress profiles determined. The results are discussed of a study into the effect of exposure condition on the chloride diffusion coefficient (D) and surface chloride concentration of concrete, with Silica Fume contents 0, 7.5 and 12.5 percent and concrete with no pozzolan. Results indicate that both replacement of silica fume and reduction of water to binder ratio decrease the chloride diffusion coefficient from tidal, splash, submerged, soil to atmospheric zone after 3 months and submerged, tidal, splash, soil to atmospheric zone after 3 years.


Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00