Natural vegetal fibbers as a new resilient layer for floating floors

• Type: Article in International Scientific Journal
• Date: 2003

Authors

R. C. Rodrigues (Author) Other; António Carvalho (Author) FEUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Acta Acustica (Stuttgart)

Vol. 89

ISSN: 1610-1928

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-007-AQB

Abstract (EN): This paper presents a new use for a product made with low cost natural fibbers from vegetal by-products to be used as a resilient layer for floating floors to increase impact sound insulation. The process of development of the product was conditioned by several constraints as the price of insertion in the market, production process, and acoustic behaviour. Accounts are given regarding the results achieved in the control of its performance. The acoustic behaviour was characterized by in situ measurements using concrete floors and product samples of different thicknesses and densities. The dynamic Young's modulus of the material was characterized and controlled to guarantee, for current loads in standard building construction, its operation in elastic phase. The use of this material in floating floors showed in laboratorial measurements a weighted impact sound improvement index (DeltaLw) of about 20 dB. Predictions based on current models are shown for the solution in study. The consequences of real construction applications of this product are commented regarding the reproduction of the achieved results. Note of some limitations are also given regarding the methodology bias that can be introduced in the final results, particularly when in presence of structures with reduced airborne sound insulation.

Language: English

Type (Professor's evaluation): Scientific