Conference_programme: 14.3 - Acoustic Regulations / Enforcement and Classification for new /existing and retrofitted buildings
Lecture: Method for the in-situ estimation of the normalized impact sound pressure level of floating floors built on hollow brick and concrete base floors from dynamic stiffness of resilient layers
Author(s): Schiavi Alessandro, Barbaresi Luca , Di Bella Antonino, Prato Andrea
Summary:
The possibility to estimate the acoustical behavior, in terms of sound insulation, of floating floors from the mechanical properties of the resilient materials used as underlayer and from the structural properties of the base floors, has been extensively investigated and verified over last years. In this paper the estimation of the normalized impact sound pressure level in the field of floating floors, built on hollow brick and concrete base floors, is addressed, on the basis of the recent revision of the Standard ISO 12354-2.\nThe peculiar behavior of hollow brick and concrete base floors, typical building technology of Mediterranean area, affects the acoustic radiation of the floor as a whole. This kind of base floor can be considered as an orthotropic periodic system, consisting of a rigid plate with ribs (ribbed plate) in concrete rigidly coupled to hollow bricks. The acoustical performance is evaluated, both as a function of frequency and in terms of weighted normalized impact sound pressure level (single number).\nMoreover, data of reduction of impact sound pressure level of floating floor are estimated from the dynamic stiffness of the resilient material on the basis of a recent constitutive model.\nA comparison between estimated data and measured data in situ, allowing to confirm the effectiveness of the proposed calculation models, is finally shown.\n
Corresponding author
Name: Dr Alessandro Schiavi
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: Italy
