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강우강도에 따른 아스팔트 혼합물 종류의 수분민감도 평가 An Evaluation of Moisture Susceptibility on Asphalt Mixtures by Rainfall Intensity

정종석, 김용락, 이상혁, 김효진
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  • URLhttp://db.koreascholar.com/Article/Detail/309640
한국도로학회논문집
제16권 제5호 (2014.10)
pp.29-38
한국도로학회 (Korean Society of Road Engineers)
초록

PURPOSES: The purpose of this study is to evaluate moisture susceptibility of a dense graded and an open graded asphalt mixtures by the method of AASHTO T-283. METHODS: To simulate moisture damage of asphalt pavements with continuously rainfall during summer rainy season, the dense graded and the open graded asphalt mixtures were immersed in water for 15 days and were measured the weight and the change of strength. Also, the mixtures were performed five freeze-thaw cycles to simulate moisture damage of the mixtures by freeze-thaw during winter and were measured the change of strength. The degradation characteristics model was used to analyze the relationship between strength and moisture damage. RESULTS: According to the results, the dense graded and the open graded asphalt mixtures were shown in the similar trends of the strength changes by immersion time and freeze-thaw cycle. However, the moisture damage reduction of open graded asphalt mixture was more sensitive in early phase than that of dense graded asphalt mixture.

저자
  • 정종석(토지주택연구원(LHI) 수석연구원) | Jung, Jong Suk
  • 김용락(University of Nebraska 토목공학과 부교수) | Kim, Yong Rak
  • 이상혁(경희대학교 토목공학과 대학원) | Lee, Sang Hyeog
  • 김효진(토지주택연구원(LHI) 연구위원) | Kim, hyo Jin 교신저자