Influence of LDHs on Chloride Ion Binding in Cementitious Materials

Ping Duan; Zhong He Shui; Guo Wei Chen

doi:10.4028/www.scientific.net/KEM.599.34

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 599Influence of LDHs on Chloride Ion Binding in...

Influence of LDHs on Chloride Ion Binding in Cementitious Materials

Abstract:

Layered double hydroxides (LDHs) materials could be used in cement and concrete for their ions capturing capacity and to enhance durability of concrete. In this work, properties and chloride binding capacity of different types of LDHs were compared, micro-mechanism of chloride binding of LDHs were analyzed and chloride binding of cement paste incorporating LDHs were investigated. The experimental results show that Mg-Al-NO₃ LDHs presents higher chloride ion binding capacity at initial time compared to LDOs calcinated at 500 °C while ion binding capacity of LDHs calms down and LDOs increases with increasing mixing time. Cement paste incorporating LDHs presents higher chloride binding capacity compared with reference sample. All types of LDHs performed beneficial effect on the chloride penetration resistance especially with addition of 1% Mg-Al-NO₃ LDOs.

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Periodical:

Key Engineering Materials (Volume 599)

Pages:

34-38

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.599.34

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Online since:

February 2014

Authors:

Ping Duan*, Zhong He Shui, Guo Wei Chen

Keywords:

Calcinations, Cementitious Materials, Chloride Binding, Layered Double Hydroxides (LDHs)

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* - Corresponding Author

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