Evaluation on the Basic Properties of Polyurethane Composite Sheet Reinforced with Non-Woven Fabric

면섬유가 보강된 폴리우레탄계 복합시트의 기초 물성 평가

  • 김지현 (부경대학교 공학연구원 산업과학기술연구소) ;
  • 도승배 (부경대학교 건축공학과) ;
  • 박정원 (부경대학교 건축공학과) ;
  • 남기융 ((주)중앙JSK건설) ;
  • 정철우 (부경대학교 건축공학과)
  • Published : 2017.05.17

Abstract

Waterproofing is a very important process in terms of durability of buildings. The materials used for waterproofing work to protect the concrete structure from external deterioration factors. In particular, the waterproofing materials applied to the exterior of the concrete structure have various problems due to changes in the external environment and variables in the construction process. The waterproof layer is repeatedly dried and shrunk according to changes in the external moisture environment, and the surface may be deteriorated due to exposure to long-term sunlight. In the case of the roof waterproofing in the structure, the waterproof layer which does not have a sufficient curing period shows much swelling and floating phenomenon. These defects, such as swelling and lifting, account for most of the defects that occur in the waterproof layer of the concrete slabs. Generally, it is difficult to expect the same level of performance as the initial state even if the waterproofing work is repaired when a defect occurs. Therefore, it is possible to reduce the defects of the waterproof layer such as swelling and lifting by forming a waterproof layer which can be integrated with the concrete surface by using a polyurethane type waterproofing material having a relatively low defective ratio compared to other waterproofing materials. So in this study, the basic properties of polyurethane waterproof sheet reinforced with non-woven fabric are investigated in order to understand field applicability.

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