아스팔트 콘크리트의 다짐도에 따른 피로 특성

Fatigue Characteristics of Asphalt Concrete Based on compacted Density

  • 김광우 (강원대학교 농공학과) ;
  • 이병덕 (강원대학교 대학원 토목공학과) ;
  • 박용철 (강원대학교 대학원 농공학과)
  • 발행 : 1994.10.01

초록

This study was conducted to evaluate performance of asphalt concretes under various densities, using Marshall specimens before and after freezing-and-thawing treatment. Six different compaction blows per side (20, 30, 40, 50, 60, 70 blows) were applied to specimens to produce different densities. Test results showed that the lower density specimens had the weaker resistance to freezing-and-thawing treatment. The density was an index of retaining fatigue life and displacement after freezing-and-thawing. Therefore, poor compaction in pavement was considered to be a major cause of early distress mechanisms such as rutting, ravelling and cracking, which were resulted in a reduced service life.

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