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Chloride penetration into cementitious mortar at early age



Title: Chloride penetration into cementitious mortar at early age
Author(s): J. Caballero, R.B. Polder, G. Leegwater, A. Fraaij
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Print-ISBN: 978-2-35158-096-7
e-ISBN: 978-2-35158-097-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 65 - 72
Total Pages: 8
Nb references: 8
Language: English


Abstract: Modern service life design methods for concrete structures use chloride diffusion data as input parameters. Abundant data exist for concrete at 28 days and, to a lesser extent, at later ages. This paper presents RCM test data for mortar at ages between 1 day and 28 days age.
Mortar specimens made with Portland (CEM I) and Blast Furnace Slag (CEM III/B) cements with w/c 0.50 were subjected to RCM testing and natural diffusion testing. The results show that mortar at young age had relatively high chloride migration coefficients. During the first days, values for CEM I were up to one order of magnitude higher than at 28 days age and for CEM III/B up to two orders of magnitude. In the following days these values dropped rapidly and more strongly for Blast Furnace Slag cement. Experimental data was used to model the ingress up to 50 years. Modelling results show that the effect of exposure


Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00