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首页> 外文期刊>Journal of testing and evaluation >Relationship of Aggregate Microtexture to Asphalt Pavement Skid Resistance
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Relationship of Aggregate Microtexture to Asphalt Pavement Skid Resistance

机译：集料微纹理与沥青路面防滑性能的关系

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Aggregate properties are one of the important factors that influence the asphalt pavement skid resistance. This paper presents a detailed analysis of aggregate texture and its relationship to pavement skid resistance. A new method is developed for the evaluation of aggregate resistance to polishing. This method relies on the Micro-Deval test as the mechanism for polishing aggregates and the Aggregate Imaging System (AIMS) for quantifying the change in texture due to polishing. The results show that the Micro-Deval test is an effective method for polishing aggregates within a short time. Also, the AIMS texture analysis is able to rapidly and accurately quantify the influence of polishing on texture. The verification of the new method was achieved through measuring the skid resistance of pavements constructed using three different aggregate sources and three different aggregate gradations. The skid resistance was found to be related not only to average aggregate texture, but also to the texture distribution within an aggregate sample. The developed method can be used in models for predicting the change in asphalt pavement skid resistance as a function of aggregate texture, mixture properties, and environmental conditions.
机译：骨料性质是影响沥青路面防滑性能的重要因素之一。本文详细分析了骨料质地及其与路面抗滑性的关系。开发了一种新的方法来评估集料的耐抛光性。此方法依靠Micro-Deval测试作为抛光聚集体的机制，并依靠聚集体成像系统（AIMS）量化由于抛光引起的纹理变化。结果表明，Micro-Deval测试是在短时间内抛光集料的有效方法。而且，AIMS纹理分析能够快速而准确地量化抛光对纹理的影响。通过测量使用三种不同的骨料来源和三种不同的骨料等级构造的路面的防滑性能，对新方法进行了验证。发现防滑性不仅与平均骨料质地有关，而且与骨料样品内的质地分布有关。所开发的方法可用于模型中，以预测沥青路面防滑性随集料质地，混合物特性和环境条件的变化。

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