Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 325, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2022.116477
Keywords
Environmental noise; Nanoparticles; Rice husk; Sound absorbing materials; Urban facade
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The characteristics of environmental noise are influenced by factors other than its source, such as reverberation time. Incorporating sound absorbing materials into building facades can improve urban environments. This research evaluates the impact of different facade materials combined with rice husk nanoparticles on acoustic absorption.
Environmental noise characteristics are determined by factors besides its source. One such factor is reverberation time, which in city canyons tends to be high due to the reflective characteristics of materials commonly used in building facades. Incorporating sound absorbing materials into building facades can help improve urban envi-ronments. This research evaluates different facade materials (concrete mix, mortar mix, vinyl spackling, and epoxy resin) incorporated with rice husk nanoparticles (NPs). Rice husk, in addition to presenting good prop-erties for acoustic absorption, is one of the main agricultural wastes worldwide. Additionally, the characteristic of rice husk nanoparticles is correlated with milling time (longer grinding times enhance production of rice husk NPs). Sound absorption coefficients levels increase for compounds with a greater amount of rice husk NPs.
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