Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Influence on Compressive Strength and Drying Shrinkage of Concrete with Urea-Water Soluble Sulfur Admixture

요소-수용성 유황 혼화제가 콘크리트 압축강도 및 건조수축에 미치는 영향

  • Park, Jae Kyu (Department of Civil Engineering, Chungbuk National University) ;
  • Han, Sang Hoon (Department of Civil Engineering, Chungbuk National University) ;
  • Hong, Ki Nam (Department of Civil Engineering, Chungbuk National University) ;
  • Cho, Yong In (Department of Civil Engineering, Chungbuk National University) ;
  • Chai, Yuzhe (Department of Civil Engineering, Chungbuk National University)
  • Received : 2016.04.06
  • Accepted : 2016.09.22
  • Published : 2016.10.31
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Abstract

This paper presents an experimental study to ivestigate mechanical property of concretes according to addition of urea and urea-water soluble sulfur contents. Urea was added at 5~20% replacement by weight of water, and water soluble sulfur was used at 2%, 4% replacement by weight of cement. The setting times, the hydration heat, the compressive strength, and the drying shrinkage, were measured on concretes with single and binary admixtures. From the test result, it was confirmed that the hydration heat of urea-water soluble sulfur was lower than that of normal concrete by $10.1^{\circ}C$, and the drying shrinkage of urea-water soluble sulfur concrete was more excellent than normal concrete. In the case of urea of 5%, Compressive strength were improved with an increase of water soluble sulfur contents. The urea-water soluble sulfur used in this research can be used as improvement materials for drying shrinkage and compressive strength.

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References

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