Abstract
In this paper, we investigate the acoustic behaviour of building elements made of concrete doped with waste-tire rubber. Three different mixtures were created, with 0%, 10%, and 20% rubber in their composition. Bricks, lattice joists, and hollow blocks were manufactured with each mixture, and three different cells were built and tested against aerial and impact noise. The values of the global acoustic isolation and the reduction of the sound pressure level of impacts were measured. Results proved that highly doped elements are an excellent option to isolate low frequency sounds, whereas intermediate and standard elements constitute a most interesting option to block middle and high frequency sounds. In both cases, the considerable amount of waste-tire rubber recycled could justify the employment of the doped materials for the sake of the environment.
Highlights
Waste has been managed towards its burial in landfills, with or without previous incineration and/or compression
Ethylene-vinyl acetate (EVA) generated in the manufacturing of footwear is used to improve the thermal behaviour of non-structural concrete [4], and sawdust timber together with low-density poly-propylene is employed to produce masonry bricks with enhanced acoustic absorption rates [5]
We investigate the acoustic behaviour of waste-tire rubber concrete bricks
Summary
Waste has been managed towards its burial in landfills, with or without previous incineration and/or compression. They could even improve the performance of traditional elements Building elements such as bricks, lattice joists, and hollow blocks are made of ceramics, plaster, or concrete. In the case of ceramic and plaster elements, previous studies have analysed the possibility of incorporating waste-tire rubber with success [9,10,11,12]. We investigate the acoustic behaviour of waste-tire rubber concrete bricks We investigate the acoustic behaviour of waste-tire rubber concrete bricks (wall elements), lattice joists, and hollow blocks (unidirectional slab elements) with different proportions elements), lattice joists, and hollow blocks (unidirectional slab elements) with different proportions of rubber in the mixture. We assess the acoustic performance of bricks, lattice joists, and hollow blocks jointly, and not as separate components, since they work together in real buildings. Validate any constructive new proposal with specific tests, such as the one previously described [28]
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