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首页> 外文期刊>Construction and Building Materials >Performance Evaluation Of A High Durability Asphalt Binder And A High Durability Asphalt Mixture For Bridge Deck Pavements
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Performance Evaluation Of A High Durability Asphalt Binder And A High Durability Asphalt Mixture For Bridge Deck Pavements

机译：桥面铺装高耐久性沥青结合料和高耐久性沥青混合料的性能评估

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摘要

This paper describes the results of laboratory and full-scale performance tests for a high durability asphalt binder (HDAB) and high durability asphalt mixture (HDAM) applicable to the wearing course in a bridge deck system. The HDAB was developed using a sty-rene-butadiene- styrcne (SBS) modifier and hydrocarbon for improving construction workability and resistance to fatigue cracking. Various binder tests were conducted on the HDAB, and test results showed that the resistance to fatigue and low temperature cracking of the HDAB increased significantly compared to that of the PG 64-22 and PG 76-22 binders. For the mixtures, the fatigue test results showed that the HDAM has a three times longer fatigue life than the SBS-modified asphalt mixture. It was also found that the HDAM has a higher resistance against moisture-induced damage. Results from full-scale accelerated testing on the bridge deck pavement system proved that the HDAM can significantly improve pavement performance.
机译：本文介绍了适用于桥面系统磨损过程的高耐久性沥青粘合剂（HDAB）和高耐久性沥青混合物（HDAM）的实验室和全面性能测试的结果。 HDAB是使用苯乙烯-丁二烯-苯乙烯（SBS）改性剂和碳氢化合物开发的，用于改善施工作业性和抗疲劳龟裂性。对HDAB进行了各种粘合剂测试，测试结果表明，与PG 64-22和PG 76-22粘合剂相比，HDAB的抗疲劳和低温龟裂性能显着提高。对于混合物，疲劳测试结果表明，HDAM的疲劳寿命是SBS改性沥青混合物的三倍。还发现，HDAM具有更高的抵抗潮气引起的破坏的能力。桥面铺装系统全面加速测试的结果证明，HDAM可以显着改善铺装性能。

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