天然材料的回收和再利用:利用橄榄树修剪废料的吸音盒图案

IF 1.3 Q3 ACOUSTICS Acoustics (Basel, Switzerland) Pub Date : 2023-02-05 DOI:10.3390/acoustics5010011
Rossella Cottone, L. Shtrepi, V. Serra, S. Pagliolico
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引用次数: 0

摘要

修剪橄榄树的农业活动产生废物,由于长期的做法和对后果的不了解,这些废物在现场燃烧,从而在大气中产生二氧化碳排放。因此,为了防止环境污染和资源浪费,本研究调查的目的是强调修剪橄榄树废弃物的一些替代用途。这项工作的重点是回收和再利用的副产品,作为可用于室内声学校正目的的内部组件的二次原材料,并评估其作为吸收材料的潜力,而不忽视美学维度。本文研究了以松散的橄榄修剪片为填充物的胶合板框架的不同配置,即模块和子模块。此外,还测量了其他技术细节,即组织非组织(TNT)层和施加在松散材料外表面上的喷涂薄膜涂层的影响。吸声测量是在小规模混响室(SSRR)内进行的,实验结果表明,对于给定的厚度,样品的加权吸声值(αw)在0.15和0.35之间,单个三分之一倍频程的值在500Hz以上可以达到高于0.50的值。测试了TNT和喷涂薄膜涂层影响的样品的频率曲线和加权值保持不变。这是一个设计方面,允许吸收表面建模并与现有墙壁集成,同时保持松散材料的声学性能和特定美学特征。
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The Recycling and Reuse of Natural Materials: Sound Absorbing Box Patterns That Use Waste from Olive Tree Pruning
The agricultural activity of pruning olive trees generates waste which, due to long-standing practices and unawareness of the consequences, are burned on site, thereby producing CO2 emissions in the atmosphere. Therefore, in order to prevent environmental pollution and a waste of resources, the aim of this research investigation was to highlight some alternative uses of the pruning of olive trees waste. This work focuses on recycled and reused by-products as a secondary raw material for the implementation of interior components that can be used for indoor acoustic correction purposes and evaluates their potential as absorbing materials, without overlooking the aesthetic dimension. In this paper, different configurations based on plywood frames with loose olive pruning chips used as a filler, namely, modules and sub-modules, were investigated. Moreover, other technological details, that is, the influence of a Tissue-Non-Tissue (TNT) layer and a spray film coating applied over the external surface of the loose material, were measured. Sound absorption measurements were conducted inside a small-scale reverberation room (SSRR) and the experimental results demonstrated that the samples, for the given thickness, have weighted sound absorption values (αw) of between 0.15 and 0.35 and single third-octave band values that can reach higher values than 0.50 above 500 Hz. The frequency curves and weighted values of the samples in which the influence of TNT and the spray film coating were tested remained unchanged. This is a design aspect that allows absorbing surfaces to be modeled and integrated with existing walls, while maintaining the acoustic performance and the specific aesthetic features of the loose material.
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3.70
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审稿时长
11 weeks
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