Experimental study on factors affecting the sound absorption and noise reduction performance of asphalt concrete
YUAN Meng
Abstract：In order to construct a low-noise environment,the factors influencing the sound-absorbing and noise-reducing performance of asphalt concrete are studied.Experimental study are conducted using four types of asphalt concrete layers:open graded friction course(OGFC-13),porous asphalt concrete(PAC-13),stone mastic asphalt(SMA-13),and dense-graded asphalt concrete(AC-13).The tests are carried out at 12 different frequencies within the 1/3-octave band center frequency.The aim is to analyze the impact of asphalt concrete properties and water on the sound-absorbing and noise-reducing performance.The results of the experiments show that asphalt concrete with larger void gradation,richer surface texture,and greater specimen thickness exhibit better sound-absorbing and noise-reducing performance.When saturated with water,asphalt concrete with larger voids experiences a significant attenuation in its sound-absorbing and noise-reducing coefficient.
Keywords：road noisesound-absorbing coefficientnoise-reducing coefficientasphalt mixture
Publication Date：2023-12-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 104-108 )