Browse > Article
http://dx.doi.org/10.4334/JKCI.2006.18.5.667

Properties of Polymer Cement Mortars under Combined Cures  

Jo, Young-Kug (Dept. of Architectural Engineering, Chungwoon University)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.5, 2006 , pp. 667-675 More about this Journal
Abstract
Concrete is much more easily damaged by various parameters than by the only one and performance reducing mechanism grows more complicated in that condition. In addition, the factors which really act in concrete structure tend to be activated in turn and the degradation of concrete is very rapidly progressed. The purpose of this study is to evaluate the properties of polymer cement mortars under combined cures. The polymer cement mortars are prepared with various polymer types, polymer-cement ratios and cement-fine aggregate ratio, and tested for compressive and flexural strengths, accelerated carbonation, chloride ion penetration and acid resistance test, and freezing-thawing test. The properties of polymer cement mortars under combined cures is discussed. From the test results, polymer cement mortars have superior strengths compared with plain cement mortar under combined cures. The strengths of polymer cement mortars are markedly increased at curing condition II and V, however strengths are not improved at curing condition I and IV irregardless of polymer types. The carbonation and chloride ion penetration depths of polymer cement mortars tend to decrease in curing conditions, III-C, IV-B, V-A order, and decrease with increasing polymer cement ratios. It is concluded that polymer cement ratio of 10 to 15% are considered optimum for the preparation of such polymer cement mortars.
Keywords
Polymer cement mortar; polymer-cement ratio; compressive strength; flexural strength; carbonation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ohama, Y., HandBook of Polymer-Modified Concrete and Mortars, Noyes Publications, New Jersey, U.S.A, 1995, 225pp
2 조영국, 김영집, 소양섭, '양생조건이 폴리머 시멘트 모르타르의 강도발현에 미치는 영향에 관한 실험적 연구', 대한건축학회논문집, 14권 3호, 1998, pp.335-344
3 Ngala, V. T., and Page, C. G., 'Effects of carbonation on pore structure and diffusional properties of hydrated cement pastes', Cement and Concrete Research, Vol.27, No.7, 1997, pp.301-311
4 宮川豊章, 'ユンクリ-ト構造物の耐久性の問題點とその對策', ユンクリ-ト工學, Vol.32, No.6, 1994, pp.66-71
5 竹田宣典, 十河茂幸 '凍結歸解と中性化の複合劣化作用を受るユンクリトの耐久性に關する硏究', ユンクリ-ト工學 年次論文集, Vol.24, No.1, 2002, pp.735-740