陶粒吸声材料声学参数的试验研究  

Experimental study on acoustic parameters of ceramsite sound absorbing material

作　　者：周红梅[1] 杨漫 朱万旭[1,2] 卜炬鹏 ZHOU Hongmei;YANG Man;ZHUWanxu;BU Jupeng(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;School of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China;Guangxi Road and Bridge Engineering Group Co.Ltd.,Nanning 530000,China)

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006 [2]桂林理工大学土木建筑工程学院,广西桂林541004 [3]广西路桥工程集团有限公司,广西南宁530000

出　　处：《广西科技大学学报》2022年第3期74-80,106,共8页Journal of Guangxi University of Science and Technology

基　　金：广西自然科学基金项目(2018GXNSFAA281284)资助。

摘　　要：陶粒吸声材料是以陶粒为骨料,水泥为胶凝材料,添加外加剂制备而成。通过试验分析增加水灰比、置换微细陶粒、添加乳胶粉和聚丙烯纤维对陶粒吸声材料的吸声系数和流阻率的影响。结果表明:增加水灰比、置换微细陶粒、添加乳胶粉和聚丙烯纤维都会使流阻率升高,但平均吸声系数并不随着流阻率的升高而升高;混合级配下水灰比为0.20的陶粒吸声材料吸声效果更好;添加微细陶粒能提升陶粒吸声材料高频段的吸声性能;添加1.0%的乳胶粉和0.3%的聚丙烯纤维使陶粒吸声材料的吸声系数分别降低了0.02和0.01。Ceramsite sound absorption material is prepared by using ceramsite as aggregate,cement as cementitious material and adding admixture.The effects of increasing water-cement ratio,replacing micro-ceramic particles,adding latex powder and polypropylene fiber on the sound absorption coefficient and flow resistance of ceramic particles were analyzed by experiments.The results show that the flow resistance increases with increasing water cement ratio,replacing micro-ceramic particles,adding latex powder and polypropylene fiber,but the average sound absorption coefficient does not increase with the increase of flow resistance;The ceramsite sound-absorbing material with a water cement ratio of 0.20 has better sound absorption effect.The addition of micro ceramsite can improve the sound absorption performance of ceramsite at high frequency.Adding 1.0%latex powder and 0.3%polypropylene fiber can reduce the acoustic absorptivity of ceramsite by 0.02 and 0.01,respectively.

关 键 词：陶粒吸声材料 流阻率 吸声系数 声学试验 

分 类 号：TB343[一般工业技术—材料科学与工程]