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Title |
Comparative Analysis of Noise Characteristics by Road Pavement Types as Measurement Methods
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Authors |
송국곤(Guk-Gon Song) ; 배석경(Seok-Kyeong Bae) ; 조우영(Woo-Young Cho) ; 조현우(Hyun-Woo Cho) |
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DOI |
https://doi.org/10.11112/jksmi.2024.28.5.47 |
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Keywords |
도로포장; 교통소음; 타이어-노면 소음; CPX 측정; 통과소음 Road pavement; Traffic noise; Tire-road surface noise; CPX measurement; Pass-by noise |
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Abstract |
This study investigates the noise reduction effects of various road pavement methods to mitigate traffic noise caused by the increasing proximity between roads and residential areas in urban environments. The noise characteristics of four types of road pavement?Dense Asphalt Concrete (DAC), Double Layer Porous Asphalt Concrete (DLPAC), Transverse Tining Concrete (TTC), and Exposed Aggregate Concrete (EAC)?were evaluated using CPX close-proximity noise and pass-by noise measurements. The CPX measurements showed that noise levels increased logarithmically with vehicle speed for all pavements. Specifically, DLPAC demonstrated higher noise levels in the low-frequency range below 800 Hz and lower noise levels in the high-frequency range, which is attributed to resonance effects within the internal pores of the pavement and the reduction of compression and expansion noise. In pass-by noise measurements, DLPAC exhibited higher low-frequency noise compared to DAC, likely due to pavement durability deterioration and the influence of external environmental noise. The results indicate that the CPX measurement method is more effective in evaluating road noise performance as it better reflects the impact of vehicle speed. However, since the study was conducted under limited site conditions, further research across various sites and conditions is necessary to enhance reliability.
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