| 摘要 |
The invention relates to noise-protective materials and can be used in engineering and building for protection against noise. Sound-absorbing plate has basis and noise-absorbing material fixed on it, as such glass is used. Glass can be made as flat sheet, or with waved outer surface. The waves can be straight, concentric or arc-like with one or different centers of arcs. Glass can be used as separate pieces, for instance granules, and applied to basis at both sides. Achievement of high acoustic (sound absorption and sound insulating) and operational properties is provided, those do not depend on effect of natural factors (rain, snow, wind, temperature drops, etc.) and do not change with time. |
