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多尺度力学和声学特性对低噪声路面。

Multi-scale mechanical and acoustic characterization of low noise pavements.

机构信息

Empa, Swiss Federal Laboratories for Materials Science and Technology, Concrete and Asphalt Laboratory, Überlandstrasse 129, 8600, Dübendorf, Switzerland.

Grolimund+Partner AG, Waldeggstrasse 42a, CH-3097, Liebefeld-Bern, Switzerland.

出版信息

Environ Sci Pollut Res Int. 2024 Nov;31(51):61073-61095. doi: 10.1007/s11356-024-35198-2. Epub 2024 Oct 15.

DOI:10.1007/s11356-024-35198-2
PMID:39404947
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11534880/
Abstract

Using data on in situ performance of low noise pavements, three well performing mixtures were selected: SDA 4, SDA 6, and SDA 8. These mixtures and the corresponding mastic (filler + bitumen + additive) were tested for their mechanical and acoustic performance in non-aged and aged states using a multi-scale approach (mm to km). Thereafter, an optimization protocol was applied to these mastics (mm-scale) and promising combinations were implemented at the mixture scale (cm-scale). As a result, the best performing mixture parameters were implemented in the m-scale slabs where the mechanical and acoustic performance were determined. The proposed work could uniquely combine knowledge from in situ long term and laboratory performance of low noise pavements. Using a traffic simulator and measurements before and after trafficking, the acoustic modeling showed that the modified mixtures' noise levels were maintained after loading. This indicates that the modification assured acoustical integrity of the mixture after loading.

摘要

利用低噪声路面原位性能数据,选择了三种性能良好的混合料:SDA4、SDA6 和 SDA8。使用多尺度方法(从毫米到公里)对这些混合料及其相应的玛蹄脂(填料+沥青+添加剂)进行了机械和声学性能测试。然后,对这些玛蹄脂(毫米级)应用了优化方案,并在混合料级(厘米级)实施了有前途的组合。结果,在机械和声学性能确定的 m 级平板中实施了性能最佳的混合料参数。这项工作可以独特地结合低噪声路面原位长期性能和实验室性能的知识。使用交通模拟器和交通前后的测量,声学建模表明,改性混合料的噪声水平在加载后保持不变。这表明改性确保了混合料在加载后的声学完整性。

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本文引用的文献

1
Assessment of asphalt concrete acoustic performance in urban streets.城市街道沥青混凝土声学性能评估
J Acoust Soc Am. 2008 Mar;123(3):1439-45. doi: 10.1121/1.2828068.