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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6197
Title: Use of polymer/organoclay nanocomposite surface treatment as water/ion barrier for concrete
Authors: Leung, Christopher K. Y.
Zhu, Honggang
Kim, Jang-Kyo
Woo, Ricky S. C.
Keywords: Polymer/organoclay nanocomposite
Surface treatment
Moisture barrier
Chloride ion barrier
Epoxy
Silane
Cement-based material
Issue Date: 2008
Citation: Journal of materials in civil engineering, v. 20, no. 7, July 2008, p. 484-492
Abstract: The durability of concrete structures is strongly affected by the ease of water and ion penetration. Polymeric surface treatment with epoxy and silane are commonly used to provide a barrier to the ingress of water and ions. In this investigation, the improvement of barrier properties of epoxy and silane by the incorporation of nano-sized organoclay was studied. The water vapor transmission test and the salt spray resistance test were conducted to evaluate the resistance to moisture and chloride penetration respectively. The test results indicate significant improvement in moisture penetration resistance when small amounts of organoclay, ranging from 1 wt% to 5 wt%, are introduced into neat epoxy and neat silane. Polymer/organoclay nanocomposites are also more effective than neat polymers in inhibiting the ingress of chloride ion into the concrete, with 3 wt% epoxy/organoclay nanocomposites showing the best performance. The results demonstrate the potential application of polymer/organoclay nanocomposites as coating material for concrete structures.
Rights: © 2008, ASCE. The published version is available at http://cedb.asce.org/cgi/WWWdisplay.cgi?0805528
URI: http://hdl.handle.net/1783.1/6197
Appears in Collections:MECH Journal/Magazine Articles
CIVL Journal/Magazine Articles

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