【作者】 熊樟； 梁树力； 楚珑晟； 易锦；

【Author】 XIONG Zhang,LIANG Shu-li,CHU Long-sheng,YI Jin (Key Laboratory of Advanced Technologies of Materials of Ministry of Education, Southwest Jiaotong University,Chengdu 610031,China)

【机构】 西南交通大学材料先进技术教育部重点实验室；

【摘要】 以硅酸盐水泥为主要原料,通过原位组装成型技术制备了一系列多孔吸声材料:涉及调整粘度调节剂添加量、减水剂添加量和养护工艺等。采用驻波管法测试多孔吸声材料的吸声性能,用WDW微机控制电子万能试验机测试其强度。结果表明,多孔吸声材料800Hz到6300Hz平均吸声系数可达到0.7以上;多孔材料强度随着粘度调节剂添加量增多而下降;随着容重的增加,材料的强度逐渐提高;养护工艺和水灰比变化对低容重材料强度影响不大,而对高容重多孔材料强度影响较大。更多还原

【Abstract】 A series of Silicate-based porous sound-absorbing materials,whose changes refer to different curing methods and different contents of viscosity-controlling agent and water reducer agent,have been manufactured by the portland cement,with the way of in-situ assembly.The sound-absorbing characteristics are tested by the devices of standing wave,the compressive strength of materials is tested by WDW microcomputer servo tensile (compression) testing machine.The result shows that,Average absorption coefficient of porous sound-absorbing materials is more than 0.7 from 800 to 6300Hz.As the increasing of volume-weights and viscosity-controlling agent contents,porous sound-absorbing materials’ compressive strength separately increase and decrease. At the same time,different methods of cure and water-cement ratio have significantly effects on high volumeweight porous sound-absorbing materials’ compressive strength.更多还原