【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。更多还原

【Abstract】 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.更多还原