The effect of time on acoustic durability of low noise pavements – The case studies in Poland |
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| Institution: | 1. CTAC, School of Engineering, Department of Civil Engineering, University of Minho, Portugal;2. ISISE, School of Engineering, Department of Civil Engineering, University of Minho, Portugal;1. Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USA;2. Maxxis Technology Center, Suwanee, GA 30024, USA;1. School of Highway, Chang’an University, Xi’an 710064, China;2. School of Energy and Architecture, Xi''an Aeronautical University, Xi’an 710077, China;3. YunNan TongQu Engineering Testing Co., Ltd., Kunming 650041, China;1. Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu Province 210016, China;2. Shanghai Municipal Engineering Cost Consultation Co. Ltd., Shanghai 200092, China |
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| Abstract: | The tyre/road noise depends on type and speed of vehicles and on the characteristics of road pavement. Vehicle traffic load and weather conditions lead to significant changes in the characteristics of the materials used to build the wearing course. This applies especially to road pavements with the increased void contents. Clogging of the pores, changes in the characteristics of the binder and the damage to the wearing course influence changes in the acoustic properties of the road pavement over time. The article presents the results of the studies on noise level carried out in 2011 and 2014 by the Statistical Pass-By method (SPB) on porous asphalt concrete (PAC), very thin asphalt concrete (VTAC) and stone mastic asphalt (SMA). The wearing courses with the increased void contents immediately after building constitute a very advantageous solution compared with traditional road pavements (dense asphalt concrete, stone mastic asphalt). However, the unfavourable location of the road with porous wearing course, lack of systematic cleaning of porous layers or inappropriate maintenance methods in winter lead to the loss of the acoustic durability of low-noise pavements within a few years of their exploitation. |
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| Keywords: | Tyre/road noise Low noise pavement Acoustic durability |
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