Effect of waste materials on acoustical properties of semi-dense asphalt mixtures

Among the urban societal burdens rolling noise generation from tire pavement interaction and waste stand apart. Many materials can be used in pavements with comparable mechanical performance. Noise-related characteristics such as porosity, sound absorption surface texture, were measured for semi-dense low mixtures using namely: recycled concrete aggregates, crumb rubber, polyethylene terephthalate polyethylene. The results show that use of these is a viable sustainable option pavements, however may affect reduction properties. With values around 0.2 at 1000 Hz, all relatively mean profile depth (MPD) alone not enough to characterize Surface texture was altered different degrees depending on material used. presented aid policy pertaining abatement reduction.