Abstract
AbstractSurvival model with Weibull hazard function was used to evaluate the influence of different factors on the crack initiation of resurfaced asphalt pavement. Data from Specific Pavement Study 5 experiments of the Long Term Pavement Performance (LTPP) program were used to conduct the analysis. The initiation time of four types of cracks including alligator (fatigue) crack, longitudinal crack on wheel path, non–wheel path longitudinal crack, and transverse crack was evaluated. Analyzed factors include overlay thickness, total pavement thickness, pretreatment pavement serviceability, traffic volume, freeze index, mixture [whether reclaimed asphalt pavement (RAP) is used], and whether milling is performed before overlay. It was found that traffic level was a significant factor for all four types of cracks. High traffic level accelerated the initiation of cracking. Thick overlay delayed the initiation of cracking except for the non–wheel path longitudinal crack, which is mainly caused by poor constructio...
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