One of the main types of distress observed in Asphalt Concrete (AC) overlays is reflective cracking, and a reflective cracking model has been recently incorporated into the latest released version of AASHTOWare Pavement ME Design (PMED) software. This study documents the complete results of the sensitivity with respect to the design inputs and material properties of reflective cracking distress predicted by the PMED software. Six representative locations distributed across different climate zones of the United States were considered for studying the effects of climate extremities on changes in predicted reflective cracking distress. One-at-a-time (OAT) sensitivity analyses was performed to determine the Normalized Sensitivity Index (NSI), with two scenarios considered for OAT analyses: (i) sensitivity of short-term reflective cracking prediction (i.e., the year when predicted distress reached 4000 ft/mile) and (ii) sensitivity of long-term reflective cracking prediction (20-year design life). The summary of NSI ranking for varying traffic levels are presented.

在沥青混凝土 (AC) 覆盖层中观察到的主要损坏类型之一是反射裂缝，最近发布的 AASHTOWare Pavement ME Design (PMED) 软件中已包含反射裂缝模型。本研究记录了与 PMED 软件预测的反射裂缝破坏的设计输入和材料特性相关的敏感性的完整结果。考虑了分布在美国不同气候带的六个代表性地点来研究气候极端对预测的反射裂缝遇险变化的影响。执行一次一次 (OAT) 敏感性分析以确定归一化敏感性指数 (NSI)，OAT 分析考虑了两种情况：(i) 短期反射裂缝预测的敏感性（即预测的遇难达到 4000 英尺/英里的年份）和 (ii) 长期反射裂缝预测的敏感性（20 年设计寿命）。显示了不同流量级别的 NSI 排名摘要。