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Physical Properties of Polymer Modified Mortar Containing FRP Wastes Fine Powder

폐FRP 미분말을 사용한 폴리머 시멘트 모르타르의 물성

  • 황의환 (천안공업 대학 신소재응용화학과) ;
  • 한천구 (청주대학교 건축공학과) ;
  • 최재진 (천안공업대학 토목공학과) ;
  • 이병기 (천안공업 대학 신소재응용화학과)
  • Published : 2002.04.01

Abstract

In this research the physical properties of polymer modified mortar containing pulverized FRP(Fiber-Reinforced Plastics) wastes fine powder as a part of fine aggregate were investigated. Styrene-butadiene rubber(SBR) latex, polyacrylic ester(PAE) emulsion and ethylene-vinyl acetate(EVA) emulsion were used as Polymer modifier. Polymer modified mortars containing FRP wastes fine powder were prepared with various FRP wastes fine powder replacement(5∼30 wt%) for fine aggregate and polymer-cement ratios(5∼20 wt%). The water-cement ratio, water absorption rates and hot water immersion test, compressive and flexural strengths of polymer modified mortars were tested and the results compared to those of ordinary portland cement mortar. As the results, compressive and flexural strengths of polymer modified mortar containing FRP wastes fine powder depend on the contents of FRP wastes fine powder, type and additional amounts of polymer modifier. Some of them showed higher compressive and flexural strengths than those of ordinary portland cement mortar. Especially, SBR-modified mortar showed the highest strengths properties among three types of polymer modifier. Also water absorption rates, compressive and flexural strengths of SBR-modified mortar were more superior than those of PAE or EVA-modified mortar. The optimum mix proportions of SBR-modified mortar was 20 wt% of polymer-cement ratio and 20 wt% of FRP wastes fine powder replacement. Otherwise heat cured polymer modified mortar accelerated the improvement of early compressive and flexural strengths.

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