Acoustic characterization of cement matrix composites with lightweight aggregates

Autores UPV
Año
CONGRESO Acoustic characterization of cement matrix composites with lightweight aggregates

Abstract

In today's society a lot of waste is generated. Reduction and reuse of these waste helps reduce environmental problems. The building industry requires new materials that offer advantages: strength, lightness, and properties resulting in comfort, among others. Attempts can be found to light concrete with recycled material. The materials used are varied: PVC plastic, polystyrene foam, fiber, shredded tires, waste from casting or demolition material. The expanded materials from clays are commonly used in the materials construction industry. Examples of these applications are pavements for road traffic, acoustic screens for residential areas or road and lightweight concrete in buildings. This work is performed analyzing the use of acoustic expanded materials using Portland cement as binding material in porous materials of lightweight aggregates. Arlite and vermiculite are base material employed for porous lightweight concrete. The acoustic properties are carried out with impedance tube and nonacoustic properties are obtained by experimental tests. A simple theoretical model for granular materials based on experimental parameters are used to predict the acoustic response. References