Impact noise of bare concrete slabs

Abstract

A poured concrete slab with no finish flooring and no ceiling is one of the simplest floor assemblies possible. Most structural slabs share similar design parameters such as density, mix, and compressive strength, and might be expected to have a similarly limited range of impact noise isolation. The authors have compiled a large number of bare slab tapping tests performed in laboratories, which provides information on the uncertainty in the test method for the specific assemblies used in the laboratory tests. The authors have compiled a large number of field impact tests on bare slabs in buildings, and the data reveals a surprisingly large variation in the impact sound pressure levels for actual slabs. The effects of this variation is discussed, including the suitability of various ratings of impact sound insulation, the relationship between laboratory and field measurements, and the uncertainty of impact noise measurements.