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Open AccessArticle

Chloride Ion Adsorption Capacity of Anion Exchange Resin in Cement Mortar

Department of Architectural Engineering, Hanyang University, Ansan 15588, Korea
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Materials 2018, 11(4), 560; https://doi.org/10.3390/ma11040560
Received: 20 February 2018 / Revised: 23 March 2018 / Accepted: 4 April 2018 / Published: 5 April 2018
This paper presents the effect of anion exchange resin (AER) on the adsorption of chloride ions in cement mortar. The kinetic and equilibrium behaviors of AER were investigated in distilled water and Ca(OH)2 saturated solutions, and then the adsorption of chloride ions by the AER in the mortar specimen was determined. The AER was used as a partial replacement for sand in the mortar specimen. The mortar specimen was coated with epoxy, except for an exposed surface, and then immersed in a NaCl solution for 140 days. The chloride content in the mortar specimen was characterized by energy dispersive X-ray fluorescence analysis and electron probe microanalysis. The results showed that the AER could adsorb the chloride ions from the solution rapidly but had a relatively low performance when the pH of its surrounding environment increased. When the AER was mixed in the cement mortar, its chloride content was higher than that of the cement matrix around it, which confirms the chloride ion adsorption capacity of the AER. View Full-Text
Keywords: anion exchange resin; cement mortar; chloride adsorption anion exchange resin; cement mortar; chloride adsorption
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Lee, Y.; Lee, H.; Jung, D.; Chen, Z.; Lim, S. Chloride Ion Adsorption Capacity of Anion Exchange Resin in Cement Mortar. Materials 2018, 11, 560.

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