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http://dx.doi.org/10.5345/JKIBC.2011.11.6.587

Strengths of Rapidly Hardening SBR Cement Mortars as Building Construction Materials According to Admixture Types and Curing Conditions  

Jo, Young-Kug (Department of Architectural Engineering, Chungwoon University, Hongseong)
Jeong, Seon-Ho (Department of General Education, Pyeongtaek University)
Jang, Duk-Bae (SsangYong Engineering & Construction)
Publication Information
Journal of the Korea Institute of Building Construction / v.11, no.6, 2011 , pp. 587-596 More about this Journal
Abstract
Ultra rapid-hardening cement is widely used for latex-modified mortar and concrete as repair and finishing material during urgent work. The purpose of this study is to evaluate the improvements in strength made to SBR cement mortars by the adding of various admixtures and by the use of different curing methods. SBR cement mortar was prepared with various polymer-cement ratios, curing conditions and admixture contents, and tested for flow, flexural and compressive strengths. From the test results, it was determined that the flow of SBR cement mortar increased with an increase in the polymer-cement ratio, and the water reducing ratio also increased. The strength of cement mortar is improved by using SBR emulsion, and is strengthened by adding metakaoline. The strength of SBR cement mortar cured in standard conditions was increased with an increase in the polymer-cement ratio, and attained the maximum strengths at polymer-cement ratios of 15 % and 10 %, respectively. The maximum strengths of SBR cement mortar are about 1.8 and 1.3 times the strengths of plain mortar, respectively. In this study, it is confirmed that the polymer-cement ratio and curing method are important factors for improving the strengths of rapid-hardening SBR cement mortar.
Keywords
polymer cement mortar; polymer-cement ratio; water reducing ratio; flexural strength; compressive strength;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 Jo YK. A study on the water permeability and dry shrinkage of polymer cement composites. Journal of the Korea Institute of Building Construction. 2009 Oct;9(5):73-9.   DOI   ScienceOn
2 Korean Standards Association. KS(Korean Industrial Standards) F 2476: method of test sample of polymermodified mortar in the laboratory. 1987. 3 p.
3 Ohama Y. Handbook of polymer-modified concrete and mortars: properties and process technology. New Jersey: William Andrew Publishing/Noyes; c1995. 257 p.
4 Won JP, Kwon YS, Lee JJ. Properties of high- performance concrete containing high-reactivity metakaolin. Journal of the Korea Concrete Institute. 2002 June;14(3):349-56.   과학기술학회마을   DOI   ScienceOn
5 Jo YK, Jeon WS, Soh YS. An experimental study on the effect of curing conditions on the improvement in strengths of polymer-modified mortar. Journal of the Architectural Institute of Korea. 1998 Mar;14(3):335-44.   과학기술학회마을
6 Park CB, Kim HS, Jeon JY, Kim EK, Ryu DH. Properties of ternary or quaternary high strength concrete using silica fume & metakaolin. Journal of the Korea Concrete Institute. 2008 June;20(3):307-15.   과학기술학회마을   DOI   ScienceOn
7 Kang IS, Ahn MY, Paik MS, Lim NG, Moon JS, Jung SJ. Properties analysis of ultra rapid hardening mortar using magnesia-phosphate cement. Journal of the Architectural Institute of Korea. 2007 Aug;23(8):139-48.   과학기술학회마을
8 Jo YK, Park HS, Soh YS. A study on the acid-proof of polymer cement mortars. Journal of the Architectural Institute of Korea. 1990 Aug;6(4):32-42.
9 Jo YK, So SY. Abrasion resistance of polymer-modified mortar according to curing conditions. Journal of the Korea Institute of Building Construction. 2005 Aug;5(4):115-9.   과학기술학회마을   DOI   ScienceOn
10 Jo YK, Kim WK. Design of polymer grouting mortar for prepacked concrete using polymer dispersions. Journal of the Korea Institute of Building Construction. 2008 Oct;8(5):85-91.   과학기술학회마을   DOI   ScienceOn