铁路金属声屏障吸声用岩棉性能研究  

Study on Properties of RockWool for Railway Metal Noise Barrier

作　　者：董大为 李鹏 水春雨 洪蔚 刘烁 马爱英 DONG Dawei;LI Peng;SHUI Chunyu;HONGWei;LIU Shuo;MAAiying(Energy Saving&Environmental Protection&Occupational Safety and Health Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司节能环保劳卫研究所,北京100081

出　　处：《铁路节能环保与安全卫生》2020年第5期10-14,共5页Railway Energy Saving & Environmental Protection & Occupational Safety and Health

基　　金：中国铁道科学研究院科研开发基金项目(2017YJ106)。

摘　　要：吸声材料是影响铁路金属声屏障降噪效果的重要因素之一,在阐述吸声材料吸声原理及特点的基础上,对岩棉和矿渣棉的耐水性能和抗吹风性能进行试验。结果表明,岩棉的耐水性能、抗吹风性能均高于矿渣棉;岩棉酸度系数越高,耐水性能越高;长期的列车风荷载不会对满足酸度系数要求的岩棉产生损坏,应选择优质的岩棉作为声屏障用吸声材料。Sound-absorbing material is one of the important factors affecting the noise reduction effect of railway metal sound barrier.Based on expounding the sound absorption principle and characteristics of sound-absorbing material,the water resistance and anti-blowing performance of rock wool and slag wool are tested.The results show that the water resistance and anti-blowing resistance of rock wool are higher than those of slag wool.The higher the acidity coefficient of rock wool,the higher the water resistance.Long-term wind load on trains will not damage rock wool meeting the requirements of acidity coefficient,so high-quality rock wool should be selected as sound-absorbing material for sound barrier.

关 键 词：声屏障 岩棉 耐水性能 吹风试验 

分 类 号：TU55[建筑科学—建筑技术科学]