International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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A Study on the Analysis of Scaling Failure Cause in L-Shoulder Concrete Structure

L형측구 콘크리트 구조물의 표면박리파손 원인분석에 관한 연구

  • Jeon, Sung Il (Highway Pavement Research Division, Korea Institute of Construction Technology) ;
  • Nam, Jeong Hee (Highway Pavement Research Division, Korea Institute of Construction Technology) ;
  • Ahn, Sang Hyeok (Highway Pavement Research Division, Korea Institute of Construction Technology) ;
  • An, Ji Hwan (Highway Pavement Research Division, Korea Institute of Construction Technology)
  • 전성일 (한국건설기술연구원 도로연구실) ;
  • 남정희 (한국건설기술연구원 도로연구실) ;
  • 안상혁 (한국건설기술연구원 도로연구실) ;
  • 안지환 (한국건설기술연구원 도로연구실)
  • Received : 2014.09.26
  • Accepted : 2014.11.26
  • Published : 2014.12.18
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Abstract

PURPOSES : The purpose of this study is to verify the causes of surface scaling at L-shoulder concrete structure. METHODS : From the literature reviews, mechanisms of frost damage were studied and material properties including strength, air void, spacing factor and scaling resistance of L-shoulder concrete structure were analyzed using core specimens taken by real fields. RESULTS : The spacing factor of air void has relatively high correlation of surface conditions : lower spacing factor at good surfacing condition and vice versa. If the compressive strength is high, even thought spacing factor does not reach the threshold value of reasonable durability, the surface scaling resistance shows higher value. Based on these test results, the compressive strength also provide positive effect on the surface scaling resistance. CONCLUSIONS : The main causes of surface scaling of L-shoulder could be summarized as unsuitable aid void amount and poor quality of air void structure. Secondly, although the compressive strength is not the governing factor of durability, but it shows the positive effect on the surface scaling resistance.

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References

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