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A Fundamental Study on Induction Technology of Separation Behavior Using Two-sided Adhesion of Joint of Composites Waterproofing System

시트-도막 복합방수공법의 접합부 2면 접착을 통한 분리거동 유도 기술에 관한 기초적 연구

  • Park, Jin-Sang (Convergence Institute of Biomedical Engineering and Biomaterials Program of Architecture, Seoul National University of Science and Technology) ;
  • Lee, Tae-Yang (Deputy General Manager, KL Waterproof Engineering & Construction Co,. LTD.) ;
  • Kim, Dong-Bum (N&C Partners) ;
  • Park, Wan-Goo (N&C Partners) ;
  • Heo, Neung-Hoe (N&C Partners) ;
  • Oh, Sang-Keun (Dept. of Architectural Eng. Seoul National University of Science and Technology)
  • 박진상 (서울과학기술대학교 일반대학원 의공학-바이오소재 융합협동과정 건축프로그램) ;
  • 이태양 (케이엘건설(주)) ;
  • 김동범 (엔앤씨파트너스) ;
  • 박완구 (엔앤씨파트너스) ;
  • 허능회 (엔앤씨파트너스) ;
  • 오상근 (서울과학기술대학교 공과대학 건축학부)
  • Received : 2015.09.15
  • Accepted : 2015.09.26
  • Published : 2015.09.30

Abstract

This study focuses evaluating the efficiency and performance evaluation of composite type sheet-membrane waterproofing method that utilizes a separation behavior inducement system designed to resolve the chronic problems of disintegration and damage of overlap areas of waterproofing layers. As the result of the test, the tensile strength value was at 13.8N/mm and elongation rate at 587% for the separation behavior inducement type specimen, and the compared specimens had 14.2N/mm for tensile strength and 335% for elongation rate. For the separation behavior adhesion method specimen, when tensile stress or displacement occurred, the Zero-Span tension occurrence did not follow, which resulted in that the bottom sheet layer and the top membrane layer did not simultaneously becoming damaged. When undergoing the top and bottom layers were separated through separation behavior due to lack of flexibility, the bottom layer began to damage at the primary stage, and with the allowed boundary the upper membrane layer began to display flexibility and showed continuous displaced resulting in secondary phase damaging.

본 연구는 시트-도막 복합방수공법에서의 고질적인 접합부 파단 하자를 해결하기 위한 목적으로 고안한 접합부 2면 접착을 통한 분리거동 유도 기술의 적용에 있어 기술의 유효성 및 성능검증을 목적으로 진행하였다. 이를 위해 비교 시험군으로서 3면 접착 기술이 적용된 I형 접합부를 선정 및 제작하여 연구 대상 기술과 인장성능 및 신장률 평가를 진행하였다. 평가 결과, 3면 접착방식의 비교 시험군 접합부의 인장강도의 경우 14.2N/mm 신장률 335%로 확인되었고, 본 연구 대상인 분리 거동형 접합부의 경우 인장강도는 13.8N/mm 신장률 587%로 확인되었다. 이러한 결과는 3면 접착방식의 경우, 모든 재료가 구속되어있는 형태로 구성되어 있음에 따라 강도적 측면에서 본 연구 대상에 비해 높은 결과가 나온 것으로 판단하였다. 또한 본 연구대상인 분리 거동형 접합부의 경우, 인장응력 및 변위가 발생하였을 때 무절점 인장응력(Zero-span tension)이 발생하지 않음에 따라 하부 시트층과 상부 도막층이 동시에 파단되지 않고, 하부 시트층과 상부 도막층이 분리거동 신축부재에 의해 분리되면서 하부 시트층 부터 순차적으로 1차 파단되고, 변위 허용 구간에 들어서면서 상부 도막층이 본연의 신축성을 나타내며, 지속적인 변위를 나타내다가 일정 변위 구간에서 2차적으로 파단되는 특성을 나타내는 것을 확인할 수 있었다.

Keywords

References

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