Efficiency Assessment of Crack Maintenance Material Using Ultra Fine Cement

초미립자시멘트를 이요한 균열보수재 성능평가 연구

  • 백인관 (단국대학교 건축공학과) ;
  • 박현수 (신흥대학 건축설계과) ;
  • 정란 (단국대학교 공학부 건축공학전공)
  • Published : 2000.10.01

Abstract

Concrete structure often exhibit cracks due to the combination of material construction and design error. Minor crack can be tolerated depending on exposure condition, but major cracks are aesthetically unpleasant and affect the durability and safety of the structure. All of the reinforced concrete structure have many inevitable cracks for various reason such as drying shrinkage, heat liberation of cement and over loads. Epoxy resin injection widely used for repairing cracks in concrete is too sensitive to high temperature. Besides, the problem in the epoxy resin injection is the difficulty of quality control after execution. Whereas, Ultra Fine Cement is similar in coefficient of thermal expansion and modulus of elasticity to concrete. The objective of the study is to find out that it is possible for Ultra Fine Cement to be used for repairing cracks in reinforced concrete.

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