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Acoustic Behavior of Hollow Blocks and Bricks Made of Concrete Doped with Waste-Tire Rubber

机译：掺废轮胎橡胶的混凝土空心砌块和砖的声学特性

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摘要

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.
机译：在本文中，我们研究了掺有废轮胎橡胶的混凝土制成的建筑构件的声学性能。创建了三种不同的混合物，其组成中的橡胶含量分别为0％，10％和20％。用每种混合物制造砖块，格子托梁和空心砖，并构建了三个不同的单元并针对空中和冲击噪声进行了测试。测量了整体隔音的值和冲击声压水平的降低。结果证明，高掺杂元素是隔离低频声音的绝佳选择，而中级和标准元素则是阻挡中高频声音的最有趣的选择。在这两种情况下，大量回收的废轮胎橡胶可以证明为环保起见使用掺杂材料是合理的。

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