標準號：ISO 13472-1-2002
中文標準名稱：聲學.施工現場路面對噪聲吸收性能的測量.第1部分:擴大表面法
英文標準名稱：Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 1: Extended surface method
標準類型：Z32
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z32
國際標準分類號：17.140.30;93.080.20
適用范圍：This part of ISO 13472 describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz. Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see annex F). The test method is intended for the following applications: — determination of the sound absorption properties of test tracks according to ISO 10844, with limitations, and other similar standards; — determination of the sound absorption properties of road surfaces in actual use; — comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work. The complex reflection factor can also be determined by this method.