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首页> 外文期刊>Journal of the Association of Asphalt Paving Technologists >Comparison between Binder and Hot Mix Asphalt Properties and Early Top-Down Wheel Path Cracking in a Northern Ontario Pavement Trial
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Comparison between Binder and Hot Mix Asphalt Properties and Early Top-Down Wheel Path Cracking in a Northern Ontario Pavement Trial

机译：安大略省北部路面试验中的粘结剂和热拌沥青性质与早期的自上而下车轮路径开裂的比较

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摘要

The primary objective of this paper is to evaluate the usefulness of various asphalt binder and Mixture properties for predicting field performance in terms of top-down fatigue cracking. A secondary goal is to discuss how various modification technologies for obtaining a given Superpave~(R) grade can lead to significant differences in service performance.Different binder and Mixture tests were evaluated in an attempt to explain early top-down wheel path cracking in three of seven test Sections of a pavement trial on Highway 655 north of Timmins, Ontario. The trial was constructed in the summer of 2003 with 500 m long, side-by-side Sections that contained a variety of modified binders: five of PG 64-34, one of PG 58-34, and a control Section of PG 52-34. Modification additives and technologies employed included reactive ethylene terpolymer (RET), polyphosphoric acid or phosphoric acid (PPA and H_3PO_4), oxidation, styrene-butadiene-styrene (SBS), and combinations thereof.The test Sections were exposed to record low temperatures during January 2004 when the temperature at 5 mm below the pavement surface reached -34℃ on two occasions. A visit in late January 2004 showed little distress except for minor transverse cracking in transition areas. In contrast, a detailed survey in late April 2004 revealed that by then three test Sections had cracked severely, with a total of approximately 143 m of wheel path cracks
机译：本文的主要目的是评估各种沥青粘合剂和混合物性质对自上而下疲劳裂纹预测领域性能的有用性。第二个目标是讨论获得给定Superpave〜（R）等级的各种改性技术如何导致服务性能的显着差异。评估了不同的粘合剂和混合物测试，以试图解释三个早期自上而下的车轮路径裂纹。安大略省蒂明斯市以北655号公路上的路面试验的七个试验段中的10个。该试验于2003年夏季建成，长500 m，并排放置，其中包含各种改性粘合剂：五种PG 64-34，一种PG 58-34和另一种PG 52- 34。所采用的改性添加剂和技术包括反应性乙烯三元共聚物（RET），多磷酸或磷酸（PPA和H_3PO_4），氧化，苯乙烯-丁二烯-苯乙烯（SBS）及其组合.1月，测试区暴露于创纪录的低温下2004年，路面下5毫米处的温度两次达到-34℃。 2004年1月下旬的一次访问显示，除过渡地区的横向裂缝较小外，几乎没有什么困扰。相比之下，2004年4月下旬的详细调查显示，当时三个测试段已经严重开裂，总共约143 m的车轮路径开裂

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