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Permanent deformation characteristics of porous asphalt determined in the confined repeated load axial test

机译:密闭重复荷载轴向试验确定的多孔沥青永久变形特性

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摘要

A simple development to the Nottingham Asphalt Tester is described, which allows confining stress to be applied during repeated load tests to measure permanent deformation characteristics. The test was used to assess two groups of porous asphaltwearing course specimens, one made with conventional bitumen and one with a polymer modified bitumen. The results demonstrated the importance of applying confining stress for testing materials of this type. The influence of the binder type was lesssignificant except for unconfined specimens.
机译:描述了对诺丁汉沥青测试仪的一个简单改进,它允许在重复的载荷测试过程中施加限制应力,以测量永久变形特性。该测试用于评估两组多孔沥青磨损层试样,一组用常规沥青制成,另一组用聚合物改性沥青制成。结果表明,施加约束应力对于测试此类材料非常重要。粘合剂类型的影响除无侧限样品外影响不大。

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