Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지

Properties of Shrinkage in Concrete Incorporating Shrinkage Reducing Agent and Expansive Additive

수축저감제와 팽창재를 병용 치환한 콘크리트의 수축 특성

  • 김광화 (청주대학교 건축공학부 일반대학원) ;
  • 문학룡 (청주대학교 건축공학부 일반대학) ;
  • 심영태 ((주)덕일엔지니어링, 기술연구) ;
  • 이병상 ((주)덕일엔지니어링, 기술연구) ;
  • 정용희 ((주)덕일엔지니어) ;
  • 한천구 (청주대학교 건축공학부)
  • Published : 2004.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study is to investigate the engineering and shrinkage properties of concrete incorporating shrinkage reducing agent(SRA) and expansive additive(EA) in order to reduce shrinkage of concrete. According to results, as for the properties of fresh concrete, increase in, SRA and EA content leads to reduce the fluidity but to increase the air content, and as for setting time, there is little difference. For strength properties, it decreased with an increase in SRA dosage and increased up to 5% of EA content. For the properties of drying shrinkage, it shows decline tendency with an increase in SRA and EA content reiteratively. It alto reduces significantly with the combination of SRA-EA systems due to the combined effect of the admixture. In the scope of this paper, it is found that the use of SRA with 0.5％ and EA with 5% has optimum effects on the various properties of concrete. And under the combination of SRA and EA, it can reduce drying shrinkage about 37%.

Keywords