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Early-age strength and long-term performance of asphalt emulsion cold recycled mixes with various cement contents

机译：不同水泥含量的沥青乳液冷再生混合料的早期强度和长期性能

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Cold recycling with asphalt emulsion is an economical and environment-friendly technology for asphalt pavement maintenance and rehabilitation. This study aims to investigate the early-age strength and long-term performance of the asphalt emulsion cold recycled mixes with various cement contents, as well as the correlation between the early-strength and long-term performance. To achieve this objective, three research tasks were conducted, including: 1) quantifying the early-age strength of four types of asphalt emulsion cold recycled mixes by measuring their cohesive forces and raveling loss rates through the Hveem cohesion test and raveling test, respectively; 2) characterizing their long-term performance properties, including moisture stability, high-temperature stability, and low-temperature cracking resistance; and 3) developing the correlation models between the early-age strength and long-term performance of asphalt emulsion cold recycled mixes through regression analysis. It was concluded that adding cement in cold recycled mixes played positive effects on both its early-age strength and long-term performance. In addition, strong linear correlation was found between the early-age strength and long-term performance of asphalt emulsion cold recycled mixes.
机译：沥青乳液的冷再生是一种经济，环保的沥青路面养护和修复技术。本研究旨在研究各种水泥含量的沥青乳液冷再生混合料的早期强度和长期性能，以及早期强度和长期性能之间的相关性。为了实现这一目标，进行了三项研究任务，包括：1）通过分别通过Hveem内聚力测试和松散测试测量它们的内聚力和松散损失率来量化四种类型的沥青乳液冷再生混合物的早期强度； 2）表征其长期性能，包括湿度稳定性，高温稳定性和低温抗裂性； 3）通过回归分析建立沥青乳液冷再生混合料的早期强度与长期性能之间的相关模型。结论是，在冷再生混合物中添加水泥对其早期强度和长期性能均产生积极影响。此外，在沥青乳液冷再生混合物的早期强度和长期性能之间发现了很强的线性相关性。

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