Journal Published Online: 17 June 2019
Volume 48, Issue 3

Chloride Absorption Behavior of Layered Double Hydroxides in Chloride Environment

CODEN: JTEVAB

Abstract

Chloride penetration is an important factor of concrete durability, whereas chloride ions have the potential to be absorbed by layered double hydroxides (LDHs). Magnesium-aluminum-CO3 LDHs are used in this experiment, and chloride ion absorption in chloride solution and hardened cement paste is studied. Additionally, the chloride penetration behavior in concrete containing raw LDHs and calcined LDHs (CLDHs) is also studied. The results indicate that raw LDHs show lower chloride ion absorption ability and CLDHs can absorb chloride ions in cement paste to reconstruct the structure and reduce the chloride concentration. The addition of CLDHs absorbs the chloride ions in concrete to delay the penetration, which improves the chloride ion resistance of concrete.

Author Information

Ma, Juntao
School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, China International Joint Research Lab for Eco-building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou, China State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China
Wang, Daguang
School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, China International Joint Research Lab for Eco-building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou, China
Chen, Hao
School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, China
Duan, Ping
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China Department of Materials Science and Chemistry, China University of Geosciences, Wuhan, China Zhejiang Institution, China University of Geosciences, Hangzhou, China
Shi, Yanke
School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, China
Pages: 9
Price: $25.00
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Stock #: JTE20190062
ISSN: 0090-3973
DOI: 10.1520/JTE20190062