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http://dx.doi.org/10.5762/KAIS.2020.21.10.55

Analysis of Noise Characteristics of Double and Single-layered Porous Pavement with CPX Method -National Route 1, Sejong-Si Section-  

Yoo, In-Kyoon (Department of Infrastructure Safety Research, Korea Institute of Civil and Building Technology)
Lee, Su-Hyung (Department of Infrastructure Safety Research, Korea Institute of Civil and Building Technology)
Han, Dae-Seok (Department of Infrastructure Safety Research, Korea Institute of Civil and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.10, 2020 , pp. 55-63 More about this Journal
Abstract
Road traffic noise is a major complaint. Porous pavement (PP) has been proposed as an effective method for reducing road traffic noise, but it has not been applied much due to the lack of quantitative evaluation. In this study, the noise reduction of single-layer porous pavement (SLPP) and double-layer porous pavement (DLPP) was evaluated. The noise was measured using the CPX method, and the driving speed was measured every 10km/h from 50km/h to 80km/h. The differences in noise level between the two PPs were statistically significant. The driving speed had no significant effect on the difference in noise between the two PPs. The DLPP showed a 6.6dB(A) reduction in average and a 6.3dB(A) reduction at the 95% confidence level compared to the SLPP. Reducing noise by 5dB(A) is equivalent to reducing traffic to 1/3 or lowering the vehicle's speed to 1/2. Sensitively, it is possible to recognize a 3dB(A) and 5dB(A) difference. The DLPP and SLPP were very effective in reducing traffic noise.
Keywords
Double-layer Porous Pavement; Traffic Noise; SPB; Traffic Speed; Traffic Volume;
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