Usage of Recycled Technical Textiles as Thermal Insulation and an Acoustic Absorber

Danihelová, Anna; Němec, Miroslav; Gergeľ, Tomáš; Gejdoš, Miloš; Gordanová, Janka; Sčensný, Patrik

doi:10.3390/su11102968

Cited by 46 publications

(41 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[12]. Various studies show that natural fibers, e.g., tea leaf, rice-straw, coconut and kenaf fibers have a very good capability of sound absorption and are widely used in industries for manufacturing of sound-absorbing panels [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste

et al. 2020

View full text Add to dashboard Cite

The use of acoustic panels is one of the most important methods for sound insulation in buildings. Moreover, it has become increasingly important to use green/natural origin materials in this area to reduce environmental impact. This study focuses on the investigation of acoustic, mechanical and thermal properties of natural fiber waste reinforced green epoxy composites. Three different types of fiber wastes were used, e.g., cotton, coconut and sugarcane with epoxy as the resin. Different fiber volume fractions, i.e., 10%, 15% and 20% for each fiber were used with a composite thickness of 3 mm. The sound absorption coefficient, impact strength, flexural strength, thermal conductivity, diffusivity, coefficient of thermal expansion and thermogravimetric properties of all samples were investigated. It has been found that by increasing the fiber content, the sound absorption coefficient also increases. The coconut fiber-based composites show a higher sound absorption coefficient than in the other fiber-reinforced composites. The impact and flexural strength of the cotton fiber-reinforced composite samples are higher than in other samples. The coefficient of thermal expansion of the cotton fiber-based composite is also higher than the other composites. Thermogravimetric analysis revealed that all the natural fiber-reinforced composites can sustain till 300 °C with a minor weight loss. The natural fiber-based composites can be used in building interiors, automotive body parts and household furniture. Such composite development is an ecofriendly approach to the acoustic world.

show abstract

Section: Introductionmentioning

confidence: 99%

Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Moving toward sustainability, many studies have been looking for noise mitigation also taking into account environmental issues, by using appropriate recycled or recyclable materials [23,24]. In this line, the use of straw bales as a sound insulation material might be very interesting.…”

Section: Introductionmentioning

confidence: 99%

Laboratory and In-Situ Measurements for Thermal and Acoustic Performance of Straw Bales

et al. 2019

View full text Add to dashboard Cite

This paper investigates the performance of timber-framed walls insulated with straw bales, and compares them with similar walls containing expanded polystyrene (EPS) instead of straw bales. First, thermal conductivity, initial water content, and density of the straw bales were experimentally measured in a laboratory set-up, and the dependence of the thermal conductivity of the dry material on temperature was described. Then, the two insulation solutions were compared by looking at their steady and periodic thermal transmittance, decrement factor, phase shift, internal areal heat capacity and surface mass. Finally, the acoustic performance of both wall typologies was analyzed by means of in situ measurements in two-story buildings built in Southern Italy. The weighted apparent sound reduction index for the partition wall between two houses and the weighted standardized level difference for the façades were assessed based on ISO Standard 16283. The results indicate that the dry straw bales have an average thermal conductivity of k = 0.0573 W/(m·K), and their density is around 80 kg/m3. In addition, straw bale walls have good steady thermal performance, but they still lack sufficient thermal inertia, as witnessed by the low phase shift and the high periodic thermal transmittance. Finally, according to the on-site measurements, the results underline that the acoustic performance of the straw bale walls is far better than the walls adopting traditional EPS insulation. Overall, the straw bales investigated are a promising natural and sustainable solution for thermal and sound insulation of buildings.

show abstract

“…In order to prevent such effects, the scientific community has extensively studied the most impacting sources on land, which are the major transportation infrastructure and the industries. Road and railway traffic and airports have received a large amount of attention from the scientific community in all aspects, from their noise generation mechanisms [11][12][13] to their propagation; the mapping of their impact on land and the population [14,15]; and their mitigation with innovative solutions, such as low-noise pavements made of recycled materials [16,17], real time monitoring systems [18,19], and sustainable mitigation solutions [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Classification of Noise Sources for Port Area Noise Mapping

et al. 2021

View full text Add to dashboard Cite

Maritime transportation is recognized to have advantages in terms of environmental impact compared to other forms of transportation. However, an increment in traffic volumes will also produce an increase in noise emissions in the surroundings for a greener source, as ports are frequently surrounded by urban areas. When more sources or higher noise emissions are introduced, the noise exposure of citizens increases, and the likelihood of official complaints rises. As a consequence, among the most demanding aspects of port management is effective noise management aimed at a reduction in the exposure of citizens while ensuring the growth of maritime traffic. At the same time, the topic has not been thoroughly studied by the scientific community, mostly because port areas are challenging from a noise management point of view; they are often characterized by a high degree of complexity, both in terms of the number of different noise sources and their interaction with the other main transportation infrastructure. Therefore, an effective methodology of noise modeling of the port area is currently missing. With regard to the INTERREG Maritime Program, the present paper reports a first attempt to define noise mapping guidelines. On the basis of the current state-of-the-art and the authors’ experiences, noise sources inside port areas can be divided into several different categories: road sources, railway sources, ship sources, port sources, and industrial sources. A further subdivision can be achieved according to the working operation mode and position of the sources. This classification simplifies actions of identification of the responsible source from control bodies, in the case that noise limits are exceeded or citizen complaints arise. It also represents a necessary tool to identify the best placing of medium/long-term noise monitoring stations. The results also act as a base for a future definition of specific and targeted procedures for the acoustic characterization of port noise sources.

show abstract

Usage of Recycled Technical Textiles as Thermal Insulation and an Acoustic Absorber

Cited by 46 publications

References 9 publications

Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste

Acoustic, Mechanical and Thermal Properties of Green Composites Reinforced with Natural Fibers Waste

Laboratory and In-Situ Measurements for Thermal and Acoustic Performance of Straw Bales

Classification of Noise Sources for Port Area Noise Mapping

Contact Info

Product

Resources

About