Estudio del comportamiento de los morteros reciclados frente al ruido de impacto

D Ferrández,J P Díaz,P Saiz,C Morón

doi:10.3989/ic.62487

D Ferrández, J P Díaz + Show 2 more

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https://doi.org/10.3989/ic.62487

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Abstract

En la actualidad existe una amplia gama de sistemas y materiales que se emplean como atenuadores del ruido de impacto, ofreciendo buenas prestaciones a la hora de evitar la transmisión de vibraciones a través de los forjados. En este trabajo, se han elaborado placas de mortero de cuatro centímetros de espesor con cuatro tipos de árido diferentes combinados con distintas tipologías de aislamiento. Aprovechando la menor densidad de los morteros elaborados con árido reciclado, se ha llevado a cabo una investigación en la que se propone sustituir el 100% del árido natural por árido reciclado para la fabricación de morteros empleados en el sistema de losa flotante, ya que ofrecen una solución más eficiente desde el punto de vista acústico. Los morteros elaborados con áridos reciclados de cerámica y mixto los que presentan la solución óptima para atenuar impactos producidos sobre la superficie, reduciendo hasta en un 20% la velocidad de transmisión de impactos frente a sus homólogos elaborados con árido natural.

Highlights

The impacts on the surface of any construction element produce an acoustic component called impact noise, able to be perceived even at great distances from the emitting source due to its ease of spread through the building structure (1).Some researchers performed their investigations trying to develop construction systems able to reduce impact sound transmission using floating slabs able to decouple floor with forging (2),(3),(4), or using springs or other elastic materials able to absorb great part of energy produced by the impact and mitigate in this way its transmission (5),(6)
There are different applications of vibrations produced by impact that can be used to measure physical properties of studied materials; this is the case of studies that try to determine resonance frequency of material (8), to measure dynamic elasticity module (9),(10) or to study degree of compaction of binders after vibrating during building process (11)
Where M indicates that this is cement mortar, A is the type of aggregate that can be natural aggregates (NA) in case of NA or recycled aggregates (RA) in case of RA, T is the type of RA, that can be C for concrete RA, M in case of mixed RA and Ceramic RA (Ce) in case of ceramic RA

Summary

Introduction

The impacts on the surface of any construction element produce an acoustic component called impact noise, able to be perceived even at great distances from the emitting source due to its ease of spread through the building structure (1). Some researchers performed their investigations trying to develop construction systems able to reduce impact sound transmission using floating slabs able to decouple floor with forging (2),(3),(4), or using springs or other elastic materials able to absorb great part of energy produced by the impact and mitigate in this way its transmission (5),(6). Within the researched in this field, there can be differentiated on one side those that are focused on the improvement of one particular component of measuring equipment: hitting mechanism, frequency amplifier, used software, etc. (13),(14),(15) and on the other side there are investigations centered in improving methodology of tests trying to create new practices that allow obtaining higher performance and better results using current equipment (16),(17)

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