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Linear Regression Analysis of Tensile Performance for the Polyurethane Coating Waterproofing Material Periodically Exposed to Chemical Degradation

회귀 분석을 통한 폴리우레탄 도막방수재의 장기 화학 열화조건에 따른 인장성능 변화 지표

  • Ju, Hee-Jeong (Graduate School, Tongmyong University) ;
  • Lim, Nam-Gi (Department of Architectural Engineering, Tongmyong University)
  • Received : 2018.05.09
  • Accepted : 2018.10.05
  • Published : 2018.10.20

Abstract

The purpose of this study is to evaluate the tensile strength performance of the polyurethane coating material used as the waterproofing material in concrete structures. A linear regression equation is proposed to establish a correlation on the tensile strength of polyurethane coating membrane against periodic exposure to chemical degradation. The polyurethane film membrane showed a minimum strength of 23% to a maximum of 38% when subjected to chemical degradation. The elongation rate showed a relation with the tensile strength deterioration rate of at least 15% to 22% at maximum, and the proposed regression equation could be used to predict the degree of performance change of the polyurethane coating membrane under chemical degradation condition.

본 연구에서는 현재 국내에 일반적으로 적용되고 있는 폴리우레탄 도막방수재를 대상으로 12개월간의 장기 화학열화요인 작용 시 재료적 측면에서의 성능변화 특성을 인장성능 중심으로 평가하고, 도출된 데이터를 회귀분석기법을 적용하여 정량적 회귀식을 제시함에 따라 폴리우레탄 도막방수재의 장기내구성 확보여부에 대하여 대략적으로 성능예측 가능한 기초적 데이터 베이스를 구축하였다. 화학적 열화 환경에서 폴리우레탄 도막방수재는 약 23%~38%의 강도 저하를 나타냈다. 또한 신장률의 경우 약 15%~22%의 성능 저하를 나타내는 것을 확인할 수 있었으며, 제시한 회귀방정식은 화학적 열화조건에서 도막재의 성능 변화 정도를 예측하는데 활용 가능할 것으로 판단된다.

Keywords

References

  1. Public Procurement Service Construction Management Team. 2010 Analysis of Defect Case. 2010 4 p.
  2. Bae JW, Shin SM, Kim SG, Koo CW, Hong TH, Koo KJ, Hyun CT. A study for analyzing life cycle cost of membrane water-proofing of roof - focused on precaution for securing quality. Korean Journal of Construction Engineering and Management. 2008 Aug;9(4):57-65.
  3. Kim YS. KS quality criteria improvement by weathering evaluation of domestic exposure type polyurethane waterproofing materials [doctoral dissertation]. [Cheongju (Korea)]: Cheongju University; 2014. 176 p.
  4. Park YC. A study on the system applied air-vent to complex lay poly-urethane waterproofing material and air-permeability buffer sheet of disconnection type [dissertation]. [Seoul (Korea)]: Seoul National University of Science and Technology; 2002. 83p.
  5. Kim YS, Shin HC, Kim YG. Waterproofing method and new technologies for construction structure. Korea Journal of Concrete. 2012 Jul;l24(4):23-8.
  6. Kim DB, An HH, Kim SD, Park WG, Park JS, Oh SG. A study on trend of tensile properties with ratio of water mixture under low and high temperature environment in hydroponic polyurethane waterproofing materials. Proceeding of Korea Journal of Building Construction; 2016 May 19; Jeju, Korea. Seoul (Korea): Korea Institute of Building Construction; 2016. p. 211-3.
  7. Kim SR, Shin HC, Shin JJ, Kim YG. Influence of thermal aging on the properties of polyurethane coating of waterproof. Proceeding of Korea Journal of Concrete; 2008 Nov 7; Goyang, Korea. Seoul (Korea): Korea Concrete Institute; 2008. p. 931-5.
  8. Kim HJ. A study on the optimized construction method of the waterproofing and thermal insulation for the building roof system [dissertation]. [Kangwon (Korea)]: Kangwon University; 2006. 95 p.