摘要
为解决交通噪声治理难题,研究水泥基吸音降噪材料的配合比设计,介绍材料物理力学性能测定方法,讨论城市轨道交通吸音板的结构型式设计。实践表明,城市轨道交通吸音板力学性能良好,28 d抗压强度≥8 MPa,28 d抗折强度≥2 MPa;同时,降噪系数达到国家吸声性能等级I级标准。联系实际工程运用,总结城市轨道交通吸音板的生产工艺流程及施工工法。
In order to solve the problem of traffic noise control,this paper studies the mix ratio design of cement-based sound-absorbing materials,introduces the measuring method of physical and mechanical properties of materials,and discusses the structural design of urban rail transit sound-absorbing boards.Practice shows that the mechanical properties of urban rail transit sound-absorbing board are good,with 28 d compressive strength≥8 MPa and 28 d flexural strength≥2 MPa.At the same time,the noise reduction coefficient reached the national sound absorption performance grade I standard.The production process and construction method of sound-absorbing board in urban rail transit are summarized in connection with practical engineering application.
作者
朱万旭
黄歆彧
周红梅
ZHU Wanxu;HUANG Xinyu;ZHOU Hongmei(College of Civil and Architecture Engineering,University of Science and Technology Guangxi,Liuzhou 545006,China;College of Civil and Architecture Engineering,Guilin University of Technology,Guilin 541004,China)
出处
《四川建材》
2022年第5期147-148,150,共3页
Sichuan Building Materials
基金
广西自然科学基金项目:建筑垃圾再生高闭孔率免烧陶粒的制备及其热工性能研究(2018GXNSFAA281284)。
关键词
水泥基材料
吸音降噪
交通工程
cement-based materials
sound absorption and noise reduction
traffic engineering
