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首页> 外文会议>Proceedings of the Fifty-fifth annual conference of the Canadian Technical Asphalt Association >The Effects of Low Temperature Transverse Cracking and a Swelling Clay Subgrade on Pavement Profile and IRI in Alberta
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The Effects of Low Temperature Transverse Cracking and a Swelling Clay Subgrade on Pavement Profile and IRI in Alberta

机译：低温横向裂缝和膨胀粘土路基对阿尔伯塔省路面轮廓和IRI的影响

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摘要

Several twinning projects constructed in the early 2000s in northwest Alberta were identified by AlbertarnTransportation (AT) to exhibit premature roughness characterized by heaving of the pavement surface atrnlow temperature transverse crack locations. AT and EBA Engineering Consultants Ltd. carried out anrninvestigation of one of these projects, Hwy 43:04, east of Grande Prairie, constructed in a stagedrnsequence: granular base course and first stage asphalt pavement in 2000 or 2001; final stage asphaltrnpavement in 2003.rnA high speed inertial profiler was used to collect profile data during the summer seasons of 2003 throughrn2008; data were also collected in the winters of 2008 and 2009. Analyses of the historical profile datarnindicated that the heaves at low temperature transverse crack locations were first evident in 2004, that theyrnprogressed in height through the years, and were the highest during winter. On a section basis, thernaverage IRI increased every year following final stage paving reaching between 1.8 and 2.5 mm/m in thernsummer of 2008 and increasing to 2.1 to 4.1 mm/m in the winter of 2009.rnThe results were used to identify preservation treatments to restore ride quality, and those treatments werernconstructed in 2009.
机译：AlbertarnTransportation（AT）确定了2000年代初期在艾伯塔省西北部建造的几个孪生工程，它们表现出过早的粗糙度，其特征是路面在低温横向裂纹位置处起伏。 AT和EBA工程顾问有限公司对其中一个项目进行了勘测，该项目位于格兰德草原以东43:04号公路，分阶段施工：2000年或2001年的粒状基层和第一阶段沥青路面；在2003年夏季至2008年夏季期间，使用高速惯性剖面仪收集剖面数据。还收集了2008年和2009年冬季的数据。对历史剖面数据的分析表明，低温横向裂缝位置的垂荡首先出现在2004年，多年来高度一直在升高，并且在冬季最高。从断面来看，平均摊铺后的IRI每年都在增加，最终摊铺在2008年夏达到1.8至2.5 mm / m，并在2009年冬季增至2.1至4.1 mm / m。恢复乘车质量，并在2009年对这些治疗方法进行了建设。

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