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Chloride Binding Behavior of Cement Composition



Title: Chloride Binding Behavior of Cement Composition
Author(s): In-Seok Yoon
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: 631 - 635
Total Pages: 5
Nb references: 4
Language: English


Abstract: Chloride binding capacity in cementitious materials is a crucial factor for service life prediction of marine concrete. Many researchers have dealt with experimental works and got experimental constants within the scope of Freundlich / Langmuir binding isotherm.
However, the constants depend on mixing proportion properties of the cementitous materials and the degree of hydration. Thus, it is necessary to explore reasonable approach to integrate chloride binding behavior of cementitious materials and that is a good motivation of this study.
Firstly chloride binding isotherm of major cement hydrates is examined and then chloride binding isotherm is estimated from the chloride binding of these hydrates. The result shows that monosulfates and C-S-H phase have significant binding capacity and this is main mechanism of the binding capacity. The chloride binding by mosnosulfate hydrates is attributed to produce Friedel’s salt. C-S-H hydrates also can lead to physic-chemical binding.
Based on the experiment results, to develop integrated system for prediction of chloride binding behaviors is final goals.


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