银杏木空心刨花板复合墙体隔声性能

Sound Insulation Performance of Wood Structure Wall Filled with Ginkgo Tubular Particleboard

在现代平台式轻型木结构墙体中分别填充30mm厚岩棉、33mm厚一层空心刨花板和33mm厚两层空心刨花板,形成三种不同的复合外墙,并测试三种墙体的隔声性能,得到了隔声效果的单一评价值。实验结果表明:空心刨花板复合墙体存在隔低频声差,隔高频声好的隔声特性。空心刨花板复合墙体隔声性能优于类似填实岩棉等吸声材料的墙体结构,而且其隔声性能(计权隔声量)都接近或超过40dB,符合住宅隔声标准要求。

The sound insulation performance of three kinds of wood structure wall was tested and their single -number quantity was got in this paper.The three kinds of wood structure wall were filled with three kinds of filler materials,such as 30 mm thick rock wool,33 mm one-ply and 66 mm two-ply ginkgo tubular particleboard. The test results showed that the wood structure wall filled with ginkgo tubular particleboard had better sound insulation in high frequency and lower sound insulation in low frequency.The wood structure wall filled with ginkgo tubular particleboard had better sound insulation than the wood structure wall filled with rock wool in the same structure,and the weight-counted sound insulation quantity was close to or more than 40 dB,which met the requirements of residential sound insulation standard.