Influence of spheroid and fiber-like waste-tire rubbers on the sound absorption coefficient of rubberized mortars
ARTIGO
Inglês
Este artigo foi apresentado no 61º Congresso Brasileiro de Cerâmica (CBC), 2017
Abstract: We study the sound absorption coefficient of rubberized mortars in response to the incorporation of 7.5%, 15% and 30% of waste-tire rubbers in place of sand at a water-to-cement mass (w/c) ratio of 0.48. We consider two different morphologies of rubber particles, namely spheroid (S) and...
Abstract: We study the sound absorption coefficient of rubberized mortars in response to the incorporation of 7.5%, 15% and 30% of waste-tire rubbers in place of sand at a water-to-cement mass (w/c) ratio of 0.48. We consider two different morphologies of rubber particles, namely spheroid (S) and fiber-like (F) particles. Experimental characterization was performed after 7 days of curing. The mixtures were performed by density, water absorption, void index and sound absorption. We choose the transfer function method with one microphone successively in two locations in order to obtain the sound absorption coefficient using an impedance tube. Sound absorption coefficient results indicate a slightly enhancement for 7.5% S, 15% S, 30% S and 7.5% F mixtures from 1600 Hz to 2000 Hz. The best acoustic performance is observed for 30% S and 7.5% F mixtures from 850 Hz to 2000 Hz
Fechado
Influence of spheroid and fiber-like waste-tire rubbers on the sound absorption coefficient of rubberized mortars
Influence of spheroid and fiber-like waste-tire rubbers on the sound absorption coefficient of rubberized mortars
Fontes
Materials science forum v. 958, p. 63-68, June 2019 |