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http://dx.doi.org/10.5762/KAIS.2017.18.4.487

Characterization of Asphalt Pavement Distress Using Korean Pavement Research Program  

Lee, Kwan-Ho (Dept. of Civil Engineering, Kongju National University)
Lee, Kyung-Suk (Dept. of Civil Engineering, Kongju National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.4, 2017 , pp. 487-493 More about this Journal
Abstract
The main purpose of this study is to evaluate the main parameters involved in the asphalt pavement distresses, including IRI (International Rough Index), fatigue, and permanent deformation. The main parameters are the region (Seoul and Busan), traffic level, asphalt binder, maximum aggregate of surface course, thickness of the surface course and base. A total of 64 case studies were carried out under the auspices of the KPRP (Korea Pavement Research Program). From the analysis of the KPRP test results, the key factors for the asphalt pavement distress were determined. Considering the effect of one variable in the basic condition, asphalt binder was the major factor having an effect on the distresses for an AADT (Annual Average Daily Traffic) of 5000 in the Seoul area. Among the remaining factors, the results were found to be in the order of the base layer thickness (A), surface layer thickness (B), and aggregate particle size thickness (D). The same results were obtained for an AADT of 10000. In the case of Busan with an AADT of 5000, the same result was obtained as for Seoul. Among the remaining factors, the results were in the order of the base layer thickness (A), aggregate particle thickness (D), and surface layer thickness (B). Even though there was a slight difference in the effect of the traffic level and region, asphalt binder was the parameter having the greatest effect on the asphalt pavement distress. In the case where the effect of multiple parameters was analyzed, the combination of the asphalt binder and base thickness showed a relatively strong effect.
Keywords
KPRP Design Guide; IRI; Fatigue; Permanent Deformation; Traffic;
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