材料的吸声系数

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1、材料的吸声系数（出处:《噪声控制学》，马大猷主编,科学出版社,1987）1.常用建筑材料类（混响室值）材料名称和规格频率（Hz）125250500100020004000砖墙抹光0.030.030.030.040.050.07厚地毯铺在混凝土上0.020.060.140.370.60.65铺在毛毡或泡沫橡皮上0.080.240.570.690.710.73同上，背面加防潮纸0.080.270.390.340.480.63混凝土墙粗糙0.360.440.310.290.390.25刷漆0.10.050.060.070.090.08木地板0.150.110.10.070.060.07混凝

2、土地板上铺漆布、沥青、橡皮或软木板0.020.030.030.030.030.02铺沥青R嵌木地板0.040.040.070.060.060.07玻璃大块玻璃0.180.060.040.030.020.02普通玻璃0.350.250.180.120.070.04石膏板（厚12.5mm龙骨50x100mm间距400mm）0.290.10.050.040.070.09大理石或水磨石0.010.010.010.010.020.02板条抹灰0.140.10.060.050.040.03抹灰再抹光0.140.10.060.040.040.03胶合板，厚9mm0.280.220.170.090.

3、10.11水而0.0080.0080.0130.0150.020.025通风口0.15-0.502.座位和听众的吸声系数和吸声量（n?）（混响室值）听众和座位频率（Hz）125250500100020004000听众，处于软椅，按地板而积计0.60.740.880.960.930.85蒙布软椅，按地板而积计0.490.660.80.880.820.7皮软椅，按地板而积计0.440.540.60.620.580.5听众，坐于木椅上，按地板血积计0.570.610.750.860.910.86金属软椅，或木软椅，按每一座椅的吸声量（m2）计算0.0140.0180.020.0360.03

4、50.0383・多孔吸声材料类（驻波管值）(1)纤维类名称厚度(cm)容重(kg/m3)频率(Hz)125250500100020004000散装纤维玻璃纤维51000.150.380.810.870.910.86超细玻璃绵5300.150.370.820.810.70.75矿渣绵62400.250.550.790.80.880.85石绵2.52100.060.350.50.460.520.65板材廿蔗板1.32000.120.190.280.540.490.7木丝板35200.050.150.250.560.9—麻纤维板22600.090.110.160.220.28—玻璃绵板56

5、400.060.170.480.810.95—石绵板0.818800.020.030.050.060.110.28毡类工业毛毡23700.070.260.420.40.550.56沥青玻璃绵毡3600.080.240.890.690.77—沥青矿绵毡32000.080.180.50.680.810.89泡沫塑料类聚胺屮酸酯2400.110.130.270.690.980.79酚醛21600.080.150.30.520.560.6微孔聚酯4300.10.140.260.50.820.77粗孔聚酯4400.060.10.20.590.680.85腺棊米波罗3200.10.170.450

6、.670.650.85(2)多孔泥灰制品及吸声器微孔吸声砖9.53400.410.750.660.760.81—泡沫混凝土块52900.210.390.450.50.58—加气混凝土155000.080.140.190.280.340.45泡沫石膏2.52100.060.180.50.70.550.5水泥蛭石板5〜10430-500—0.10.230.450.430.51加气混凝土空心砖，表面上开两槽，内填矿绵末经喷漆0.50.680.280.30.480.56经过喷漆0.620.840.360.430.270.54.共振类吸声结构(混响室值)(1)板材和板共振器结构与规格空腔距离(

7、cm)频率(Hz)125250500100020004000木丝板，厚3cm50.050.30.910.630.70.91龙骨间距45x45cm100.090.360.610.530.710.89三夹板50.210.740.210.10.080.12龙骨间距50x50cm50.370.570.280.120.090.12五夹板50.090.520.170.060.10.12龙骨间距45x45cm100.410.30.140.050.10.16七夹板160.