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http://dx.doi.org/10.4334/JKCI.2004.16.5.651

Drying Shrinkage and Strength Properties of High-Fluidity Polymer-Modified Mortar  

Joo Myung-Ki (Research Institute for Repair & Rehabilitation Materials of Concrete, Juseong College)
Lee Youn-Su (Research Institute for Repair & Rehabilitation Materials of Concrete, Juseong College)
Jung In-Su (Hung-Jin Enterprise Co. Ltd.)
Publication Information
Journal of the Korea Concrete Institute / v.16, no.5, 2004 , pp. 651-657 More about this Journal
Abstract
The effects of polymer-cement ratio, antifoamer content and shrinkage-reducing agent content on the air content, setting time, drying shrinkage and strength of high-fluidity polymer-modified mortars using redispersible polymer powder are examined. As a result, the air content of the polymer-modified mortars using redispersible polymer powder tends to decrease nth increasing polymer-cement ratio and antifoamer content. Regardless of the antifoamer content, the setting time of the polymer-modified mortars using redispersible polymer powder tends to delayed with increasing polymer-cement ratio. Irrespective of the antifoamer content, the drying shrinkage of the polymer-modified mortars using redispersible polymer powder tend to decrease with increasing polymer-cement ratio and shrinkage-reducing agent content. Regardless of the antifoamer content, the flexural and tensile strengths of the polymer-modified mortars using redispersible polymer powder tends to increase with increasing polymer-cement ratio, and tend to decrease with increasing shrinkage-reducing agent content. However, the compressive strength of the polymer-modified mortars using redispersible polymer powder decreases with increasing polymer-cement ratio and shrinkage-reducing agent content.
Keywords
high-fluidity polymer-modified mortar; polymer-cement ratio; antifoamer content; shrinkage-reducing agent content; setting time;
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