水泥基陶粒混凝土在中低频范围中的吸声性能研究  

Sound Absorption Performance of Cement-based Ceramsite Concrete in Medium and Low Frequency Range

作　　者：胡胜 虞秀勇 陈炜 赵丽敏 李玉平[2] 彭继文 HU Sheng;YU Xiuyong;CHEN Wei;ZHAO Limin;LI Yuping;PENG Jiwen(State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China;College of Materials Science & Engineering, Hunan University, Changsha 410082, China;Shandong Electric Power Equipment Limited Company, Jinan 250022, China)

机构地区：[1]国网湖南省电力有限公司电力科学研究院,长沙410007 [2]湖南大学材料科学与工程学院,长沙410082 [3]山东电力设备有限公司,济南250022

出　　处：《硅酸盐通报》2020年第4期1166-1170,1177,共6页Bulletin of the Chinese Ceramic Society

摘　　要：以硅酸盐水泥和陶粒为主要原料制备了吸声混凝土。研究了配合比、陶粒粒径及级配等对吸声混凝土在中低频范围中的吸声性能的影响,研究结果表明,粒径在3~15 mm时,单级配陶粒混凝土在中低频率范围内整体吸声较差,而将不同单级配陶粒混凝土串联起来,能大幅提高其吸声性能。所研制的陶粒混凝土可用于降低轨道交通、变电站环境中的噪音。Sound-absorbing concrete was prepared with silicate cement and ceramsite as the main raw materials.The effects of mix ratio,ceramsite particle size and stage matching on the sound absorption performance of sound-absorbing concrete in the medium and low frequency range were studied.The results show that single-stage ceramsite particle size at 3-15 mm concrete in the medium and low frequency range inside poor overall sound absorption.The sound absorption of single-stage ceramsite concrete is poor in the range of medium and low frequency.The performance of sound absorption can be greatly improved by connecting different single-stage ceramsite concrete in series.The developed ceramsite concrete can be used to reduce noise in the environment of rail transit and substation.

关 键 词：中低频吸声材料 陶粒 粒径 串联 

分 类 号：TU552[建筑科学—建筑技术科学]