Effectiveness Analyses of Flexible Pavement Preventive Maintenance Treatments with LTPP SPS-3 Experiment Data
Effectiveness Analyses of Flexible Pavement Preventive Maintenance Treatments with LTPP SPS-3 Experiment Data
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DOI：
10.1061/(asce)te.1943-5436.0000818
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发表时间：
2016-02-01
影响因子：
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通讯作者：
Jia, Xiaoyang
中科院分区：
文献类型：
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作者：
Gong, Hongren;Dong, Qiao;Jia, Xiaoyang
本研究利用从长期路面性能 (LTPP) 计划在线数据库的特定路面研究 3 (SPS-3) 获得的数据，分析了柔性路面预防性维护 (PM) 处理的有效性。本研究中包括的 PM 处理包括薄层热拌沥青 (HMA) 覆盖层、碎石封层、稀浆封层和裂缝封层。选择国际粗糙度指数（IRI）、车辙、疲劳开裂、纵向开裂、横向开裂作为路面性能指标。初始粗糙度变化、长期粗糙度变化和加权损伤被用作有效性的度量。采用逻辑回归模型研究预处理粗糙度条件、预处理表面条件和其他几个因素对粉末冶金处理性能的影响。这项研究的结果表明，只有薄的覆盖层和碎屑密封才能有效地阻止疲劳裂纹。薄覆盖也是唯一能有效减缓长期粗糙度增加、车辙、纵向开裂和横向开裂的处理方法。表面状况较差的截面在长期粗糙度和纵向裂纹方面恶化得更快。研究还发现，路基土壤类型、交通量和路段结构承载力对PM处理效果具有显着影响。 (C) 2015 年美国土木工程师学会。
The present study analyzes the effectiveness of preventive maintenance (PM) treatments of flexible pavements utilizing data obtained from the specific pavement study 3 (SPS-3) of the long-term pavement performance (LTPP) program online database. The PM treatments included in this study are thin hot mix asphalt (HMA) overlay, chip seal, slurry seal, and crack seal. International roughness index (IRI), rutting, fatigue cracking, longitudinal cracking, and transverse cracking were selected as indicators of pavement performance. Initial roughness change, long-term roughness change, and weighted distresses are used as measures of effectiveness. The logistic regression model is employed to investigate the influence of pretreatment roughness condition, pretreatment surface condition, and several other factors on the performance of PM treatments. Results from this study indicate that only thin overlay and chip seal are effective in retarding fatigue cracking. Thin overlay was also the only treatment effective in slowing long-term roughness increasing, rutting, longitudinal cracking, and transverse cracking. Sections with poor surface conditions deteriorate faster in terms of long-term roughness and longitudinal cracking. It is also found that soil type of subgrade, traffic volume, and structural capacities of sections exhibited significant influence on the effectiveness of PM treatments. (C) 2015 American Society of Civil Engineers.