Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지

Durability of Polymer-Modified Mortars Using Redispersible Polymer Powder

재유화형 폴리머 분말을 사용한 폴리머-시멘트 모르타르의 내구성

  • 연규석 (강원대학교 지역기반공학과) ;
  • 주명기 (주성대학 콘크리트 보수 보강 재료연구소) ;
  • 정중호 (강원대학교 지역기반공학과 대학원) ;
  • 김성기 (강원대학교 지역기반공학과 대학원) ;
  • 이지원 (강원대학교 지역기반공학과 대학원)
  • Published : 2005.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

Durability of the polymer-modified mortars using the redispersible SBR and PAE powder-modified mortars were experimentally investigated. Results of a previous study were used to determine the mix proportion that optimized the strength, and the freezing-thawing resistence, the carbonation depth and the chloride intrusion depth of the mortar for various polymer-cement ratios were studied. After 300 freezing-thawing cycles, the rate of weight reduction decreased from 7 to below 2 $\%$ as the polymer-cement ratios increased from 0 to 15 $\%$, and, on the 150 cycle basis, durability index increased from 60 to 98. Carbonation depth decreased from initial value of 5.5 to about 2.5 mm and chloride intrusion depth did from 3.5 to 1.5 mm

Keywords