轻质多孔水泥基吸声材料的设计、制备与性能研究  

Design,Preparation and Properties Research of Light-weight and Porous Cement-based Sound Absorbing Material

作　　者：宦文娟[1] 张云升[1] 李刚[1] 

机构地区：[1]东南大学材料科学与工程学院,南京211189

出　　处：《混凝土与水泥制品》2013年第10期9-14,共6页China Concrete and Cement Products

基　　金：教育部博士点基金(20120092110037);国家自然科学基金(51178106)

摘　　要：系统研究了陶粒、陶砂、珍珠岩等不同多孔骨料对水泥基材料吸声性能的影响。在此基础上,探讨了胶凝材料用量、纤维用量(0.5kg/m3、0.9kg/m3)、引气剂掺量(0.003%、0.005%、0.008%、0.01%)、憎水剂、压缩比(1、1.3、1.6、2)、表面刻槽等因素对水泥基吸声材料性能的影响规律,并研制出一种吸声效果良好,同时符合强度要求的水泥基多孔吸声材料。实验结果表明,在密实成型工艺下,加入适量纤维、引气剂,选择适当压缩比,并且引入空腔共振结构可以提高材料在特定吸声频段的吸声性能;憎水处理改善了材料浸水后的吸声性能。Influence of aggregates as ceramisite, pottery sand and perlite in different combination on the sound-ab- sorption performance of cement-based material is systematically studied. The effect of cement content, fiber content （0.5kg/m3,0.9kg/m3）, air-entering agent content （0.003%,0.005% ,0.008%,0.01%）, water repellent, compression ratio （1, t,3,1.6,2） and groove on the property of cement-based sound absorbing material is investigated respectively. One kind of porous sound absorbing material is prepared which met the strength requirement simultaneously. Results indicate that sound absorbing performance in different absorbing bands is efficiently improved under the compacting molding process by adding an appropriate dosage of fiber, air-entering agent, selecting the appropriate compression ratio and introducing cavi- ty resonance structure. Hydrophobic treatment also allows it improved efficiently after water immersion.

关 键 词：骨料 珍珠岩 吸声性能 制备 

分 类 号：TQ172.77[化学工程—水泥工业]