An Experimental and Numerical Study of Tire/Pavement Noise on Porous and Nonporous Pavements

Abstract

ABSTRACT. This present research assesses tire/pavement noise by analyzing and comparing noise data acquired from low noise pavement (Asphalt Rubber Concrete) and conventional pavement (Asphalt Concrete). Close Proximity (CPX) tests are employed in this research to acquire the tire/pavement noise generated from the test pavements. A numerical simulation model established via the finite element method is conducted to simulate the noise generated by the impact mechanism, which is observed from the CPX test on both the test pavements. The simulated tire/pavement noise pressure levels are compared with those tested to verify the reliability of the numerical model.

Parametric Influence on Prediction of Sound Absorption Coefficients for Asphalt Pavements

“…Sound absorption by porous asphalt pavement is affected by several parameters such as porosity, permeability and the layer thickness (Sachakamol and Dai, 2009). Thus, an optimazed road pavement design can enhance sound absorption by the pavement while maintaining an adequate physical structure (Dai and Lou, 2008;Lou, 2007). Although numerous in-vestigations have been performed on predicting sound absorption by pavement and the effects of porous pavement materials on traffic noise reduction, a reliable and practically sound quantitative methodology is still lacking.…”

Research on the Sound Absorption Performance of Porous Asphalt Concrete with Different Air Voids Based on the Finite Element Models

“…During engineering, it is inconvenient to obtain the air void structure in PAC; therefore, most existing studies have focused on the effects of macroscopic indicators on the noise reduction capability of PAC. Dai and Lou [6] conducted near-field noise measurements on asphalt concrete pavement with a nominal maximum particle size of 13 mm (AC-13) and porous asphalt concrete pavements with a nominal maximum particle size of 13 mm (PAC-13), ascertaining the sound-decreasing level. Luong et al [7] analyzed the influences of different contents of rubber additives on the sound absorption coefficient (SAC) of AC-13, whose results showed a positive relationship.…”