Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of void ratio and rubber particles on the noise reduction mechanism and comprehensive performance of porous elastic road surface
Porous Elastic Road Surface (PERS) is recognised as a pavement with excellent noise reduction ability. However, the mechanisms and field test evaluations of noise reduction for PERS have been not sufficiently explored. This study aims to investigate the effect of void ratio and rubber particle content on the noise reduction of PERS. PERS mixtures were prepared with varying void ratios and rubber particle contents, and subsequently tested by acoustic performance tests. The results reveal a decrease in sound pressure level, noise energy and dynamic modulus with increasing void ratio or rubber particle content. Conversely, the sound absorption coefficient presents an inverse relationship. The presence of interconnected voids significantly influences the noise reduction ability of PERS. However, excessive rubber particles can lead to decreased sound absorption coefficient. Furthermore, an optimised composition of PERS balancing road performance and noise reduction is identified. It is concluded that a PERS mixture featured with 25% void ratio, 4.5% polyurethane content and 20% rubber particle content exhibits good road performance and noise reduction ability. Notably, field tests indicate the sound pressure level reduce 9.1 dB(A) compared with traditional asphalt pavement. It is expected this study can provide insights for the development and implementation of PERS.
Effect of void ratio and rubber particles on the noise reduction mechanism and comprehensive performance of porous elastic road surface
Porous Elastic Road Surface (PERS) is recognised as a pavement with excellent noise reduction ability. However, the mechanisms and field test evaluations of noise reduction for PERS have been not sufficiently explored. This study aims to investigate the effect of void ratio and rubber particle content on the noise reduction of PERS. PERS mixtures were prepared with varying void ratios and rubber particle contents, and subsequently tested by acoustic performance tests. The results reveal a decrease in sound pressure level, noise energy and dynamic modulus with increasing void ratio or rubber particle content. Conversely, the sound absorption coefficient presents an inverse relationship. The presence of interconnected voids significantly influences the noise reduction ability of PERS. However, excessive rubber particles can lead to decreased sound absorption coefficient. Furthermore, an optimised composition of PERS balancing road performance and noise reduction is identified. It is concluded that a PERS mixture featured with 25% void ratio, 4.5% polyurethane content and 20% rubber particle content exhibits good road performance and noise reduction ability. Notably, field tests indicate the sound pressure level reduce 9.1 dB(A) compared with traditional asphalt pavement. It is expected this study can provide insights for the development and implementation of PERS.
Effect of void ratio and rubber particles on the noise reduction mechanism and comprehensive performance of porous elastic road surface
Zhong, Ke (Autor:in) / Lu, Zhu (Autor:in) / Sun, Mingzhi (Autor:in) / Li, Yuchun (Autor:in) / Qin, Yunjie (Autor:in) / Meng, Qiao (Autor:in)
31.12.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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