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Estimating correlations between rheological and engineering properties of rubberized asphalt concrete mixtures containing warm mix asphalt additive

机译：估计含热拌沥青添加剂的橡胶沥青混凝土混合物的流变和工程性能之间的相关性

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摘要

In recent years, warm mix asphalt (WMA) is widely used for reducing energy requirements and emissions in hot mix asphalt (HMA) industry. In addition, the use of rubberized asphalt in the past has proven to be economical, environmentally sound and effective in improving the performance of pavements across the US and the world. The objective of this research was to investigate the mixture performance characteristics of rubberized warm asphalt mixtures, and their correlation with binder properties, through a series of laboratory tests (e.g., viscosity, dynamic shear rheometer (DSR), and bending beam rheometer (BBR)) conducted on the binders, and obtaining the indirect tensile strength, rutting resistance, and resilient modulus of various mixtures. The results of the experiments indicated that the use of crumb rubber and WMA additive in HMA can effectively improve the engineering properties of these mixes at lower mixing and compacting temperatures and some statistical correlations between rheological and/or engineering properties were developed successfully.
机译：近年来，温拌沥青（WMA）被广泛用于降低热拌沥青（HMA）行业的能源需求和排放。此外，过去已证明使用橡胶沥青在经济上，对环境无害，并能有效改善美国乃至全世界的人行道性能。这项研究的目的是通过一系列实验室测试（例如粘度，动态剪切流变仪（DSR）和弯曲梁流变仪（BBR））来研究橡胶化的热沥青混合物的混合物性能特征及其与粘合剂性能的关系。 ）在粘合剂上进行，并获得各种混合物的间接拉伸强度，耐车辙性和弹性模量。实验结果表明，在HMA中使用粒状橡胶和WMA添加剂可以有效地改善这些混合物在较低的混合和压实温度下的工程性能，并成功地建立了流变和/或工程性能之间的一些统计相关性。

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