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Effects of Reclaimed Asphalt Pavement Contents on Construction Characteristics of Asphalt Mixtures

机译：再生沥青路面含量对沥青混合料施工特性的影响

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摘要

The objective of this research is to explore the influence of high reclaimed asphalt pavement (RAP) content on the construction temperature. Five mixtures with asphalt contents of 2.8%, 3.3%, 3.8%, 4.3%, and 4.8% and RAP content of 20%, 35%, and 50% were analyzed. The optimal asphalt content (OAC) increases with the increasing RAP content, while the added asphalt content decreases. The discharge temperature has a negative correlation with the RAP content. The higher RAP contents and initial water content result in the decrease of paving temperature. Simulated temperature segregation tests show that lower RAP content has little influence on the temperature segregation. Results in the study indicate that RAP could be successfully used in recycled asphalt mixtures depending on the OAC, thermal insulation measures, and suitable climatic conditions.
机译：这项研究的目的是探讨高再生沥青路面（RAP）含量对施工温度的影响。分析了五种混合料，其中沥青含量分别为2.8％，3.3％，3.8％，4.3％和4.8％，RAP含量为20％，35％和50％。最佳沥青含量（OAC）随着RAP含量的增加而增加，而增加的沥青含量则减少。放电温度与RAP含量呈负相关。较高的RAP含量和初始含水量会导致摊铺温度降低。模拟的温度偏析测试表明，较低的RAP含量对温度偏析的影响很小。研究结果表明，根据OAC，隔热措施和合适的气候条件，RAP可以成功地用于再生沥青混合料中。

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