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http://dx.doi.org/10.15683/kosdi.2020.09.30.449

Analysis of the Effect of Pavement Crack Depth of the Cavity Management Grade  

Park, Jeong Jun (Incheon Disaster Prevention Research Center, Incheon National University)
Publication Information
Journal of the Society of Disaster Information / v.16, no.3, 2020 , pp. 449-457 More about this Journal
Abstract
Purpose: The Seoul Metropolitan Government classifies the cavity risks into emergency, priority, general, and observation grades in consideration of the cavity size, asphalt pavement thickness, and pavement depth based on the cavity management grade criteria of Seoul. In this study, the depth of cracking was measured at 17 cracks identified by checking the pavement condition of the cavity at 265 cavities found in the 2019 cavity investigation service. Method: In the first phase, crack width and depth were measured using a vernier caliper, taper gauge, and depth gauge to check the cracks of the identified cavities. In the second phase, the location of the largest crack in the upper road surface was confirmed, and A.C. was drilled to further measure the crack depth. Results: As a result, the cavity management level was raised in nine of the 17 test cavity identified. Therefore, in case of emergency and priority recovery, the grade should be adjusted according to the depth of pavement crack and the thickness of residual A.C. pavement. Conclusion: In the case of cracks in the upper part of the cavity, the crack progression must be determined through the perforation and the remaining asphalt concrete thickness must be determined to determine the cavity grade.
Keywords
Ground Subsidence; Underground Cavity Scale; Pavement Crack Depth; Cavity Management System;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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