四种天然纤维(Musa textilis、Furcraea andina、Cocos nucifera 和 Schoenoplectus californicus)在建筑应用中的热声特性

IF 3.1 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Luis Bravo-Moncayo, Marcelo Argotti-Gómez, Oscar Jara, Virginia Puyana-Romero, Giuseppe Ciaburro, Víctor H. Guerrero
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引用次数: 0

摘要

竹子、软木或天然纤维复合材料等天然和生物基建筑材料为提高建筑物的环境可持续性提供了一种前景广阔的解决方案。从这个意义上说,本文介绍了厄瓜多尔四种常见天然纤维的热声学特性实验,它们分别是阿巴卡(Musa textilis)、卡布亚(Furcraea andina)、椰子(Cocos nucifera)和图腾拉(Schoenoplectus californicus)。考虑了不同的密度,从 85 千克/立方米(Cabuya)到 244 千克/立方米(Totora)不等,在实验室实验台上通过防护热板(GHP)和阻抗管方法对使用这些纤维制成的样品进行热声表征。对所评估的天然纤维复合材料进行了详尽的原始表征,结果表明其整体热声性能良好。纤维的热导率约为 0.04-0.06 W/m-K,因此可与聚苯乙烯、聚氨酯或气凝胶等其他已用于类似应用的材料相媲美。另一方面,被评估纤维的吸音性能也很有竞争力,但受样品厚度的影响很大,降噪系数 NRC 从 0.12 到 0.53 不等。因此,在厄瓜多尔市场上生产和销售这些用于隔热和隔音调节的材料,是一种具有良好技术性能的替代品,与建筑业中用于类似用途的合成复合材料相比,具有生态性、可持续性和低内置能耗的特点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermo-Acoustic Properties of Four Natural Fibers, Musa textilis, Furcraea andina, Cocos nucifera, and Schoenoplectus californicus, for Building Applications
Natural and bio-based construction materials such as bamboo, cork, or natural fiber composites offer a promising solution for enhancing the environmental sustainability of buildings. In this sense, the paper presents an experimental thermo-acoustic characterization of four common Ecuadorian natural fibers, abaca (Musa textilis), cabuya (Furcraea andina), coir (Cocos nucifera), and totora (Schoenoplectus californicus). Different densities were considered, from 85 kg/m3 (Cabuya) to 244 kg/m3 (totora), to thermo-acoustically characterize the samples built with these fibers, by means of the guarded-hot-plate (GHP) and impedance tube methods in-lab experimental benches. The exhaustive original characterization of the evaluated natural fiber composites showed a promising overall thermo-acoustic behavior. The thermal conductivity of the fibers was around 0.04–0.06 W/m·K and, therefore, comparable to other materials such as polystyrene, polyurethane, or aerogel that are already utilized for similar applications. On the other hand, the sound-absorption properties of the evaluated fibers are also very competitive, but strongly affected by the thickness of the sample, with noise reduction coefficient NRC ranging from 0.12 to 0.53. Consequently, the production and distribution of these materials in the Ecuadorian market for thermal insulation and acoustic conditioning constitute an alternative characterized by good technical performance, which, compared to synthetic composites used in the construction industry for similar duties, is ecological, sustainable, and has low built-in energy consumption.
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来源期刊
Buildings
Buildings Multiple-
CiteScore
3.40
自引率
26.30%
发文量
1883
审稿时长
11 weeks
期刊介绍: BUILDINGS content is primarily staff-written and submitted information is evaluated by the editors for its value to the audience. Such information may be used in articles with appropriate attribution to the source. The editorial staff considers information on the following topics: -Issues directed at building owners and facility managers in North America -Issues relevant to existing buildings, including retrofits, maintenance and modernization -Solution-based content, such as tips and tricks -New construction but only with an eye to issues involving maintenance and operation We generally do not review the following topics because these are not relevant to our readers: -Information on the residential market with the exception of multifamily buildings -International news unrelated to the North American market -Real estate market updates or construction updates
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