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首页> 外文期刊>Journal of materials in civil engineering >Effect of Mixing Time and Temperature on Cracking Resistance of Bituminous Mixtures Containing Reclaimed Asphalt Pavement Material
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Effect of Mixing Time and Temperature on Cracking Resistance of Bituminous Mixtures Containing Reclaimed Asphalt Pavement Material

机译：混合时间和温度对含再生沥青路面材料的沥青混合料抗裂性的影响

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摘要

The use of reclaimed asphalt pavement (RAP) in bituminous mixtures is considerably increasing due to the environmental and economic benefits of recycled materials. However, stiffer mixes, usually resulting from RAP addition, have raised concern about long-term properties of the pavement; a mechanical characterization of these mixes is thus needed. In this study, the effect of mixing condition on bituminous mixtures containing RAP was evaluated. Volumetric and mechanical properties were analyzed. An experimental program, with the aim of measuring stiffness modulus, water sensitivity, and cracking resistance, was conducted. Cracking resistance was evaluated according to the Fenix test because it has proved to be a convenient and effective method for characterizing cracking behavior of bituminous mixtures at different temperatures. Mixtures containing 20 or 40% of RAP material were tested; virgin aggregates and RAP mixing temperatures as well as mixing time were varied and comparisons with a reference mix were conducted to characterize fracture energy and mechanical performance.
机译：由于再生材料的环境和经济利益，沥青混合物中再生沥青路面（RAP）的使用大大增加。但是，通常是由于添加RAP而产生的较硬的混合物引起了人们对路面长期性能的担忧。因此需要对这些混合物进行机械表征。在这项研究中，评估了混合条件对含RAP的沥青混合物的影响。分析了体积和机械性能。进行了旨在测量刚度模量，水敏感性和抗裂性的实验程序。根据Fenix测试评估抗裂性，因为它已被证明是表征不同温度下沥青混合物裂化行为的便捷有效方法。测试了含有20％或40％RAP材料的混合物；改变原始骨料，RAP混合温度以及混合时间，并与参考混合物进行比较以表征断裂能和机械性能。

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