THE DYNAMIC RESPONSE OF COMPOSITE FLOATING FLOORS IN BUILDINGS
The use of floating floors has brought great contribution towards improving impact sound insulation in buildings. A floating floor consists of an upper plate, usually a screed, on the top of an elastic layer (resilient material) which is in turn laid on a concrete structural slab. Most resilient products used on floating floor design around the world are still based on foams, rubbers, glasses or mineral fibers. Nevertheless, the use of a combination of materials has become more and more popular for their sustainable characteristics and availability as natural resource, which may be relevant on the calculation of the total building cost price. The aim of this paper is to examine the variability of structural slab velocity with frequency for a two-layered resilient material composed of coconut and recycled rubber. A Finite Element (FE) model was developed using laminated (layered) shell elements composed of rubber and coconut fiber materials.
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