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http://dx.doi.org/10.11112/jksmi.2013.17.5.094

Effect of Substrate Surface Water on Adhesive Properties of High Flowable VA/VeoVa-modified Cement Mortar for Concrete Patching Material  

Do, Jeong-Yun (군산대학교 환경건설연구소)
Kim, Doo-Kie (군산대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.17, no.5, 2013 , pp. 94-104 More about this Journal
Abstract
Experiments were divided into two parts; one part is to understand the basic properties of high flowable VA/VeoVa-modified cement mortar with different polymer cement ratio (P/C) and the weight ratio of fine aggregate to cement (C:F) and the other part is to investigate the effect of surface water spread on the concrete substrate on adhesion in tension. To understand the basic performance, the specimens were prepared with proportionally mixing VA/VeoVa redispersible powder, ordinary portland cement, silica sand, superplasticizer and viscosity enhancing agent. Here, P/C were 10, 20, 30, 50 and 75% and C:F were 1:1 and 1:3. As the change of P/C and C:F unit weight, flow test, crack resistance and adhesion in tension were measured. Three specimens with good adhesion properties were selected among specimens with different P/C and C:F. The effect of surface water evenly sprayed on concrete substrate on adhesive strength is investigated. The results show that surface water on concrete substrate increases the adhesion in tension of high flowable VA/VeoVa-modified cement mortar and additionally improves the flowability compared to the non-sprayed case.
Keywords
Redispersible; Repair; Surface water; VA/VeoVA;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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