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http://dx.doi.org/10.11112/jksmi.2010.14.5.128

Study on Adhesive Strength of Polymer Modified Cement Mortar for Maintenance in Concrete Structure  

Park, Sang-Soon (상명대학교 건설시스템공학과)
Kim, Jung-Heum (서울시북부도로교통사업소)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.14, no.5, 2010 , pp. 128-135 More about this Journal
Abstract
Polymer-modified cement mortar(PCM) has been widely used for strengthening of the concrete structures due to its excellent physical properties such as high strength and durability. Adhesive strength or behavior, on the other hands, between PCM and concrete is very important in strengthening the concrete member using PCM. Therefore the adhesive failure mechanism between PCM and concrete should be fully verified and understood. This study was performed to evaluate adhesive strength of PCM to the concrete by the direct pull-out test. In the direct pull-out tests, the adhesive strength under the various pre-treatment conditions such as immersion, thunder shower, freezing and thawing are evaluated. Also, the field direct pull-out test are performed to investigate the adhesive strength of mock-up test specimens. In the results of the test, the adhesive strength value by field test are lower than those of the standard curing condition. From these comparison and investigation, field test result was similar with the thunder shower test result. The results of the test was used to evaluate the korean industrial standard of polymer modified cement mortars for maintenance in concrete.
Keywords
Adhesive strength; Polymer modified cement mortar; Repair and reinforcement; Thunder shower test;
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