Abstract
Road traffic noise is a widespread problem, especially in the densely populated cities of Europe. Exposure to high levels of (traffic) noise leads to health problems, such as stress, sleep disturbance and even heart diseases. Noise-reducing asphalt pavements are more frequently developed and selected as a first noise abatement solution. Performance of noise-reducing asphalt pavement depends on the composition and properties of asphalt mixture components, and pavement properties such as layer thickness, voids in pavement, texture. Design of asphalt mixture for the noise-reducing asphalt pavements is even more complicated for severe and cold climate regions where significant temperature fluctuations and many of frost-thaw cycles occur. Thus, the balance between mechanical and acoustical durability depends on the proper selection of asphalt mixture components. Components of these asphalt mixtures have primarily to be tested to determine their physical and mechanical properties. The main aim of this research is to evaluate properties of local aggregates, bituminous binders, and regarding test results, select the most suitable materials for the design of high-quality, durable asphalt mixture for noise-reducing asphalt pavements. The research showed that Granite A is the most suitable aggregate for the design of asphalt mixtures for noise-reducing asphalt pavement. Short-term and particularly long-term ageing of polymer modified bituminous binder PMB 45/80-65 and PMB 25/55-60 decreases the number of aromatics and increases the amount of resins. Based on Multiple Stress Creep and Recovery test results, it is assumed that all bituminous binders selected for research are suitable for the asphalt mixture design of noise-reducing asphalt pavement in terms of resistance to rutting. However, considering all tests results, bituminous binder PMB 45/80-65 (1) showed the best performance and was the most suitable for the asphalt mixture design of noise-reducing asphalt pavement.
Highlights
Road traffic noise is a widespread problem, especially in the densely populated cities of Europe
Granite A and Dolomite showed the sufficient results of gradation, Flakiness and Shape Indexes, water absorption (0.3–2.0) and resistance to fragmentation (Los Angeles coefficient varies from 14.7 to 20.7) comparing to all tested aggregates and met the recommendations for the aggregates of asphalt mixtures for noise-reducing asphalt pavements
Since Granite A showed the best results of Shape Indexes (2–3) and Flakiness Indexes (3–9) comparing to all tested aggregates, this aggregates assumed as the most suitable for the design of asphalt mixture for noisereducing asphalt pavement to achieve highest noise reduction values and durability
Summary
Road traffic noise is a widespread problem, especially in the densely populated cities of Europe. There are different sources of noise emissions in a vehicle such as an engine, transmission, cooling fan, exhaust, injection system, and tyrepavement interaction Between these different sources of noise in a vehicle, tyre-pavement interaction noise has become an increasingly important issue in densely congested urban settings near busy highways (Ejsmont, Goubert, Ronowski, & Świeczko-Żurek, 2016; Sakhaeifar, Banihashemrad, Liao, & Waller, 2017). The most promising techniques of pavement surface characteristics optimisation for noise reduction are texture optimisation (SMA, AC, BBTM, and AUTL) and increase of porosity All these mixtures can be defined as asphalt mixtures of noise-reducing asphalt pavement, but noise-reducing asphalt pavement performance depends on the composition and properties of asphalt mixture components and pavement properties. The following properties and their values of the asphalt mixture for noise-reducing pavement components in recipes have to be changed and adjusted to optimise the noise reduction (Miljkovic, 2012; Miljković & Radenberg, 2012; Ripke, Andersen, Bendtsen, & Sandberg, 2005):
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