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Evaluation of different materials as protective floor covering in-situ impact noise measurements

机译:评估不同材料作为防护地板覆盖物的原位冲击噪声测量

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摘要

Brazil's new building standard NBR15575: 2013 [1] - establishes requirements, criteria and evaluation methods to determine the performance of residential buildings in order to provide thermal, lighting, and acoustic comfort. For acoustic comfort, the standard specifies minimum performance values for airborne sound insulation and impact noise through by means of the parameters D_(n,T,w) and L_(n,T,w), respectively. Thus, in-situ measurements of the airborne sound transmission and impact noise are required to verify if the new buildings match the requirements established by the standard. According to ISO 140-7: 1998 [2] which defines methods for in- situ measurements of impact sound insulation of floors, it is necessary to use a standardized tapping machine (STM). As the hammers might damage the floor finishing a modified tapping machine (MTM), that uses a protective material between the floor and the hammers, is used as an alternative. The present study was carried out in a laboratory set-up in order to identify a suitable material to be used in the modified tapping machine to protect the floor from damage during the acoustic in-situ measurements.
机译:巴西的新建筑标准NBR15575:2013 [1]-建立要求,标准和评估方法,以确定住宅建筑的性能,以提供热,光和声的舒适感。为了达到声音舒适度,该标准分别通过参数D_(n,T,w)和L_(n,T,w)规定了机载隔音和冲击噪声的最低性能值。因此,需要对空气中的声音传播和撞击噪声进行现场测量,以验证新建筑是否符合标准规定的要求。根据ISO 140-7:1998 [2](定义了地板冲击隔音的原位测量方法),有必要使用标准的攻丝机(STM)。由于锤子可能会损坏地板饰面,因此,可以选择使用在地板和锤子之间使用保护材料的改良攻丝机(MTM)。本研究是在实验室设置中进行的,目的是确定在改进的攻丝机中使用的合适材料,以保护地板在声学现场测量过程中不受损坏。

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