Acoustic characteristics comparison for glasses and windows by laboratory measurement

Abstract

Windows are usually with a much lower sound insulation index comparing to walls. Integrated sound insulation of building components is decided by the weakest element. So, windows are the key of indoor quietness. The Rw of 3 structures of glass and 5 structures of windows are measured in laboratory. By comparing the results, the influence of thickness of glass, thickness of air layer, thickness and material of lamination and frame are shown. Rw + Ctr of the glasses are between 34 dB and 39 dB. Rw + Ctr of the windows are between 27 dB and 41 dB.Windows are usually with a much lower sound insulation index comparing to walls. Integrated sound insulation of building components is decided by the weakest element. So, windows are the key of indoor quietness. The Rw of 3 structures of glass and 5 structures of windows are measured in laboratory. By comparing the results, the influence of thickness of glass, thickness of air layer, thickness and material of lamination and frame are shown. Rw + Ctr of the glasses are between 34 dB and 39 dB. Rw + Ctr of the windows are between 27 dB and 41 dB.