Experimental Research on Sound Absorption Performance of Low-Noise Pavement
OGFC can reduce traffic noise which has very high air-void contents to absorb tire-pavement noise. This paper proposes maximum aggregate size and aggregate gradation of OGFC with the objective void of 20%. Performance of modified asphalt and best asphalt-aggregate ratio are also proposed with four kinds of modifiers, including SBS, rubber, EVA and PVC. The absorption coefficients of the four kinds of OGFC and the dense-graded Marshall specimens were tested with standing wave tube. Then their sound absorption performances were compared.
Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du
J. T. Guo et al., "Experimental Research on Sound Absorption Performance of Low-Noise Pavement", Advanced Materials Research, Vols. 374-377, pp. 1400-1404, 2012