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首页> 外文会议>Fourth European Symposium on Performance of Bituminous and Hydraulic Materials in Pavements, Apr 11-12, 2002, Nottingham, United Kingdom >Development of a laboratory test method to predict the early life skid resistance of thin asphalt surfacings
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Development of a laboratory test method to predict the early life skid resistance of thin asphalt surfacings

机译：开发一种用于预测薄沥青路面的早期抗滑性能的实验室测试方法

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In the United Kingdom there has been a dramatic change in the types of asphalt surfacing laid. The traditional use of hot rolled asphalt with its reliance on high PSV 20 mm chippings and texture depth to ensure wet skid resistance has been replaced by a variety of thinner surfacing materials. These typically use smaller sized aggregate; have a smoother surface, negative texture with their aggregate coated with bitumen that may contain fibres or some sort of polymer modification. Observation of these new surfacings has shown that the bitumen used may be retained longer on the surface of aggregate than on an HRA. This prompted the question whether it is possible to predict the early life skid resistance of these types of surfacing. As a result a laboratory method has been developed that measures the change in skid resistance for different aggregate and bitumen combinations. This has shown how differences in the type of aggregate affect the rate at which binder loss increases wet skid resistance. The research has improved the understanding of the role of the materials used and the processes involved in the provision of early life wet skid resistance for new asphalt surfacings.
机译：在英国，铺设的沥青路面类型发生了巨大变化。热轧沥青的传统使用依赖于高PSV 20毫米碎屑和纹理深度以确保抗湿滑性，已被各种较薄的表面材料所取代。这些通常使用较小尺寸的聚集体。具有较光滑的表面，负质感，其骨料上涂有沥青，沥青中可能含有纤维或某种形式的聚合物。对这些新铺面的观察表明，所用沥青在骨料表面的保留时间可能比在HRA上的保留时间更长。这引发了一个问题，即是否有可能预测这些类型的堆焊层的早期抗滑性。结果，已经开发了一种实验室方法，该方法可以测量不同骨料和沥青组合的防滑性变化。这表明骨料类型的差异如何影响粘合剂损失增加抗湿滑性的速率。这项研究提高了人们对所用材料的作用以及为新型沥青路面提供早期抗湿滑性能的过程的理解。

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