噪声控制技术—吸声隔声消声

7Р常用吸声材料的吸声系数及相关参数Р材料名称Р容重?kg/m 3Р厚度?(cm)Р倍频带中心频率(Hz)Р125Р250Р500Р1kР2Р2kР吸声系数Р超细玻璃棉Р25Р2.5Р0.02Р0.07Р0.22Р0.59Р0.94Р0.94Р5Р0.05Р0.24Р0.72Р0.97Р0.90Р0.98Р10Р0.11Р0.85Р0.88Р0.83Р0.93Р0.97Р矿棉Р240Р6Р0.25Р0.55Р0.78Р0.75Р0.87Р0.91Р毛毡Р370Р5Р0.11Р0.30Р0.50Р0.50Р0.50Р0.52Р微孔砖Р450 ?620Р4Р0.09Р0.29Р0.64Р0.72Р0.72Р0.86Р5.5Р0.20Р0.40Р0.60Р0.52Р0.65Р0.62Р膨胀珍珠岩Р360Р10Р0.36Р0.39Р0.44Р0.50Р0.55Р0.55Р8Р常用建筑材料的吸声系数Р建筑材料Р倍频带中心频率(Hz)Р125Р250Р500Р1kР2Р2kР吸声系数Р普通砖Р0.03Р0.03Р0.03Р0.04Р0.05Р0.07Р涂漆砖Р0.01Р0.01Р0.02Р0.02Р0.02Р0.03Р混凝土块Р0.36Р0.44Р0.31Р0.29Р0.39Р0.25Р涂漆混凝土块Р0.10Р0.05Р0.06Р0.07Р0.09Р0.08Р混凝土Р0.01Р0.01Р0.02Р0.02Р0.02Р0.02Р木料Р0.15Р0.11Р0.10Р0.07Р0.06Р0.07Р灰泥Р0.01Р0.02Р0.02Р0.03Р0.04Р0.05Р大理石Р0.01Р0.01Р0.02Р0.02Р0.02Р0.03Р玻璃窗Р0.15Р0.10Р0.08Р0.08Р0.07Р0.05Р9Р2)吸声量:РA:材料的总吸声量?Si:材料i的吸声表面积(m2)?吸声量A的单位是m2Р10