Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Service Life Prediction for Steel Bridge Coatings with Type of Coating Systems

도장계 종류에 따른 강교 도장의 공용수명 예측

  • Lee, Chan Young (Environmental Research Division, Korea Expressway Corporation Research Institute) ;
  • Chang, Taesun (Environmental Research Division, Korea Expressway Corporation Research Institute)
  • 이찬영 (한국도로공사 도로교통연구원, 환경연구실) ;
  • 장태순 (한국도로공사 도로교통연구원, 환경연구실)
  • Received : 2016.05.25
  • Accepted : 2016.08.02
  • Published : 2016.10.27
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Abstract

To predict service life of coating systems registered in Korean specifications for steel bridge coatings, field deterioration evaluation and accelerated weatherproof test were carried out, and deterioration models were drawn through regression analysis for evaluation results. For the coating systems that have not been used in field, regression analyses were carried out for the virtual evaluation results drawn by applying coordination factor to the field evaluation results for chlorinated rubber and urethane topcoat system. Service life prediction results showed that application of thermal sprayed coating (TSC) could extend service life of coatings to more than twice of general coatings.

국내의 강교 도장 시방에 등재되어 있는 도장계에 대한 공용수명 예측을 위하여 현장 열화도 평가 및 촉진 내후성 시험을 수행하였고, 평가 결과에 대한 회귀분석을 통하여 열화모델을 도출하였다. 현장 적용 실적이 없는 도장계에 대해서는 국외 연구 결과 및 본 연구에서 수행한 촉진 내후성 시험 결과를 참고하여 염화고무계 및 우레탄 마감 도장계의 현장 열화도 평가 결과에 열화도 항목별 조정계수를 적용하여 가상의 평가 결과를 도출한 후에 회귀분석을 실시하였다. 공용수명 예측 결과는 금속용사를 적용하면 도장계의 수명을 일반 도장계 대비 2배 이상 연장시킬 수 있다는 것을 보여주었다.

Keywords

References

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