scholarly journals Noise Reduction Effect of Porous Asphalt Pavement Based on Acoustic-Structure Coupling Model

2021 ◽  
Vol 8 (2) ◽  
pp. 97-102
Author(s):  
Jiakun Yang ◽  
Zhou Qiu ◽  
Chuanfeng Zheng
Keyword(s):  
Noise Reduction ◽  
Sound Absorption ◽  
Asphalt Pavement ◽  
Traffic Noise ◽  
Coupling Model ◽  
Comsol Multiphysics ◽  
Acoustic Structure ◽  
Porous Asphalt ◽  
Reduction Effect ◽  
Pore Depth

Nowadays, the traffic noise problem is becoming increasingly prominent. In order to study the influence of porosity and pore depth on the noise reduction performance of asphalt pavement, this paper used the software COMSOL Multiphysics to establish acoustic-structure coupling models, and simulated the sound absorption and noise reduction effect of asphalt pavement under 10%, 15%, 20%, 25%, and 30% porosity; moreover, under the condition of unchanged asphalt pavement porosity, the sound absorption and noise reduction effect of asphalt pavement under 3cm, 4cm, 5cm, 6cm, and 7cm pore depth was studied as well. The research results reveal that, with the increase of porosity and pore depth, the sound absorption and noise reduction effect of asphalt pavement gets better.

A Case Study on Noise Reduction Effect of Two-layer Porous Asphalt Pavement in an Urban Area

2016 ◽  
Vol 18 (5) ◽  
pp. 49-56 ◽  
Author(s):  
Jong-Seok Jung ◽  
Jeong-Rak Sohn ◽  
Soo-Hyoung Lee ◽  
Hong-Seok Yang
Keyword(s):  
Noise Reduction ◽  
Urban Area ◽  
Asphalt Pavement ◽  
Porous Asphalt ◽  
Reduction Effect

Micro-structural analysis of noise reduction mechanism of porous asphalt mixture based on FEM

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Junfeng Sun ◽  
Haitao Zhang ◽  
Guangyuan Wu ◽  
Zuoqiang Liu ◽  
Yuping Feng ◽  
...  
Keyword(s):  
Pore Structure ◽  
Noise Reduction ◽  
Sound Absorption ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Low Noise ◽  
Reduction Mechanism ◽  
Absorption Mechanism ◽  
Content Type ◽  
Porous Asphalt

PurposeIn order to give full play to the function of noise reduction of asphalt pavement, it is necessary to understand its internal sound absorption mechanism. Therefore, the purpose of this study is to establish a micro model of the pore structure of asphalt mixture with the help of finite element method (FEM), discuss the noise reduction mechanism of asphalt pavement from the micro perspective and analyze and evaluate the noise attenuation law of the pore structure.Design/methodology/approachThe FEM was used to establish the microscopic model of the pore structure of asphalt mixture. Based on the principle of acoustics, the noise reduction characteristics of asphalt pavement were simulated. The influence of gradation and pore characteristics on the noise reduction performance of asphalt pavement was analyzed.FindingsThe results show that the open graded friction course-13 (OGFC-13) has excellent performance in noise reduction. The resonant sound absorption structure composed of its large porosity can effectively reduce the pavement noise. For asphalt concrete-13 (AC-13) and stone matrix asphalt-13 (SMA-13), the less resonant sound absorption structure makes them have poor sound absorption effect. In addition, the variation rules of noise transmission loss (TL) curve and sound absorption coefficient curve of three graded asphalt mixtures were obtained. At the same time, the peak noise reduction values of OGFC-13, AC-13 and SMA-13 were obtained, which were 650Hz, 1000Hz and 800Hz, respectively.Originality/valueThe results show that the simulation results can well reflect and express the experimental results. This will provide a reference for further exploring the sound absorption mechanism and its variation rule of porous asphalt pavement. It also has some positive significance for the application of low noise asphalt pavement.

Research on Effect of Equivalent Diameter of Voids on Sound Absorption Performance of Porous Asphalt Concrete Based on Grey Entropy Method

2020 ◽  
Vol 861 ◽  
pp. 414-420
Author(s):  
Ming Xi Liu ◽  
Jian Guang Xie ◽  
Zhan Qi Wang ◽  
Yan Ping Liu
Keyword(s):  
Asphalt Concrete ◽  
Sound Absorption ◽  
Traffic Noise ◽  
Entropy Method ◽  
Equivalent Diameter ◽  
Air Voids ◽  
Porous Asphalt ◽  
Absorption Performance ◽  
The Relationship ◽  
Porous Asphalt Concrete

The sound absorption performance of porous asphalt concrete (PAC) is inseparable from the sizes of voids, as different sizes of voids have different absorption effects on noise in different frequency bands. However, the relationship between the two is not clear. In this study, the equivalent diameter of voids was obtained by the proposed image segmentation algorithm based on the square area, then grey entropy method was used to analyze the effect of different equivalent diameter of voids on the sound absorption performance of PAC in the frequency range of traffic noise. The results show that with the increase of air voids, the peak and average sound absorption coefficient of PAC increase, the sound absorption performance of PAC is improved; and the sound absorption performance of PAC is mainly affected by the equivalent diameter of voids of 3-4mm.

Research for Noise Reduction Performance of Rubberized Asphalt Overlay

2015 ◽  
Vol 744-746 ◽  
pp. 1335-1338 ◽  
Author(s):  
Hong Bo Zhang ◽  
Hua Tan
Keyword(s):  
Noise Reduction ◽  
Road Traffic ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Test Method ◽  
Good Effect ◽  
Road Traffic Noise ◽  
Asphalt Overlay ◽  
Sources Of Pollution ◽  
Reduction Effect

In the environment of noise pollution, the noise of pavement is one of the main sources of pollution. It has serious impact on the natural and social environment and interference with people's learning and work. The research shows that the tire or road noise will be a major part of the traffic noise when the car speed is greater than 30km/h and the truck speed is greater than 50km/h [1]. This paper analyzes the status quo of study of rubber asphalt overlay noise reduction and mechanism. Through effective traffic noise test method, we have analysis the noise reduction effect of rubber asphalt overlay. Results of the study shows that rubber asphalt overlay can well reduce road traffic noise and it has a good effect of improving the comfort of driving.

scholarly journals Sound absorption mechanism of porous asphalt pavement.

1999 ◽  
Vol 20 (1) ◽  
pp. 29-43 ◽  
Author(s):  
Michiyuki Yamaguchi ◽  
Hiroshi Nakagawa ◽  
Takuya Mizuno
Keyword(s):  
Sound Absorption ◽  
Asphalt Pavement ◽  
Absorption Mechanism ◽  
Porous Asphalt

scholarly journals Porous asphalt pavement for traffic noise reduction and pavement dewatering – the pollution problem

2018 ◽  
Vol 45 ◽  
pp. 00114
Author(s):  
Lesław Bichajło ◽  
Krzysztof Kołodziej
Keyword(s):  
Asphalt Pavement ◽  
Traffic Noise ◽  
Asphalt Mixture ◽  
Porous Asphalt ◽  
The Road ◽  
Road Pavement ◽  
Pollution Problem ◽  
Pavement Construction ◽  
Air Void ◽  
The City

The paper characterizes the porous asphalt mixture used in pavement construction. This kind of pavement can reduce traffic noise and reduce the slipperiness of the road pavement. The effectiveness of the porous asphalt depends on many design and technological aspects, but especially on the air-void clearance in the pavement layer. The paper includes the results of water permeability research based on laboratory tests of specimens from actual road pavement. The research shows the differences between the contamination of the road pavement sections located inside and outside the city. The paper includes recommendations for using porous asphalt based on experiences under Polish conditions.

Study on Noise Reduction Mechanism and Surface Performance of Crumb Rubber Micro-Surfacing Material

2014 ◽  
Vol 599 ◽  
pp. 257-260 ◽  
Author(s):  
Mei Ling Zhao ◽  
Zhi Jie Zhao
Keyword(s):  
Noise Reduction ◽  
Sound Absorption ◽  
Asphalt Pavement ◽  
Crumb Rubber ◽  
Vibration Damping ◽  
Reduction Mechanism ◽  
Waste Rubber ◽  
Surface Performance ◽  
Damping Theory

Recently, micro-surfacing is more widely used to protect the asphalt pavement for its superiority in China. This paper investigated the effects of the waste rubber on the micro-surfing material. First, the noise reduction mechanism was analysis. Then, the surface performance of the micro-surfacing mixture was characterized in the laboratory. Sound absorption and vibration damping theory was put forward in this paper. The addition of crumb can slightly improve the surface performance of the pavement.

Sound absorption characteristics of porous asphalt concrete pavements

2010 ◽  
Vol 37 (2) ◽  
pp. 273-278 ◽  
Author(s):  
Sungho Mun
Keyword(s):  
Asphalt Concrete ◽  
Sound Absorption ◽  
Traffic Noise ◽  
Void Content ◽  
Concrete Pavements ◽  
Aggregate Gradation ◽  
Porous Asphalt ◽  
Noise Measurements ◽  
Porous Asphalt Concrete ◽  
Absorption Characteristics

This study investigates the sound absorption characteristics of porous asphalt concrete (PAC) pavements using an impedance tube to assess noise reduction performance. It is clearly shown that an improved attenuation of sound wave energy is achieved by adjusting the air void content, aggregate gradation, and PAC pavement thickness, based on measurements of sound absorption coefficients. In addition, traffic noise measurements taken from PAC pavements in the field are compared to those taken from dense-graded asphalt concrete (DGAC), which is widely used in pavement materials.

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