Acoustic Insulation Behavior of Composite Nonwoven

Wood industrialization provides a contribution to timber-based building. The Chilean market is based on attributes such as the experience and trust of companies. The sales price, meeting deadlines and quality are attributes that have motivated buyers. There are more attributes to assess that are important for the client and market country: building materials and safety, sustainability, and environmental assessment. Some of these valuations are provided by certifications such as life cycle analysis, reduction of energy, water, gas consumption, thermal, acoustic insulation, fire resistance, etc. The objective is to propose an evaluation tool using sustainability indicators for prefabricated lumber-based buildings, using technical benefits of wood as an option for manufacturing prefabricated structures. They constitute references that can be integrated with international construction standards and with it, a process of improvement of the current standards for the housing solution and protection of the environment. The methodology is based on standards compliance levels, according to current, voluntary, or referential regulations, seeking to differentiate the market offer of prefabricated homes through quality indicators, benchmarking and sustainability. The results are an evaluation model synthesized into three tables according to the category evaluated: materials, products, or structures. It concludes that, to meet demand, the market must adapt its offer to new requirements where it does matter how the housing is produced, not only in the economic aspect, but also its impact on the social aspect and the environment and what it offers in terms of quality of life. The lumber-based building sector needs sustainability attributes indicators to potentiate the companies and start a differentiation business.

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The Research of the Effect of Basalt Wool on the Acoustic Isolation of the Floating Floor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.725-726.146 ◽

2015 ◽

Vol 725-726 ◽

pp. 146-152

Author(s):

Anastasiia Fidrikova ◽

Olga Grishina ◽

Alexey Marichev ◽

Artem Korsun

Keyword(s):

Experimental Study ◽

Insulation Layer ◽

Acoustic Insulation

This paper describes an experimental study of the effect of basalt wool on the acoustic isolation of the floating floor. Calculations and comparison of options flooring with use of acoustic insulation layer and without are shown. Analysis of the results of calculations are made.

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Analysis of Porous Structure in Autoclaved Materials Modified by Glass Sand

Crystals ◽

10.3390/cryst11040408 ◽

2021 ◽

Vol 11 (4) ◽

pp. 408

Author(s):

Anna Stepien

Keyword(s):

Computed Tomography ◽

Building Materials ◽

Micro Ct ◽

Structure Building ◽

Acoustic Insulation ◽

Ct Analysis ◽

Glass Sand ◽

Aerated Concrete ◽

Wall Construction ◽

Dominant Phase

This paper describes the use of glass sand in the production of autoclaved bricks. Traditional autoclaved materials consist of SiO2, CaO, and H2O. The purpose of the tests is to analyze the possibility of using glass sand in autoclaved materials and to determine their properties and durability. Depending on the structure, building materials can have porosities ranging from 0% (glass, metals) to over 90% (thermal insulation materials such as aerated concrete). Porosity of materials is directly related to the strength of materials and their density, and further to the thermal and acoustic insulation properties of products used especially for external wall construction, i.e., bricks, concrete, and aerated concrete. This type of silicate brick is formed at a temperature of 203 °C, therefore the dominant phase forming the microstructure is tobermorite, in contrast to the C-S-H phase, which dominates in concretes and which is characterized by a larger specific surface. The nature of pores, their number, appearance and arrangement in the material can be studied using computer techniques (SEM, XRD, computed tomography, porosimetry). Computed tomography (micro-CT analysis) showed that the number of voids in the material modified by glass sand is about 20% in relation to the weight of the product. The density of the product with glass sand was determined to be 2.2 kg/dm3.

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Mechanical and functional evaluations of flaming-retardant/far-infrared composite nonwoven fabrics

Journal of the Textile Institute ◽

10.1080/00405000.2018.1507702 ◽

2018 ◽

Vol 110 (2) ◽

pp. 186-195 ◽

Cited By ~ 1

Author(s):

Jia-Horng Lin ◽

Ting An Lin ◽

Ting Ru Lin ◽

Jan-Yi Lin ◽

Mei-Chen Lin ◽

...

Keyword(s):

Far Infrared ◽

Nonwoven Fabrics ◽

Composite Nonwoven

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Use the Polymer Concrete as a Substitute for Ordinary Concrete by Improving of Acoustic and Thermal Insulation With Suitable Cost

Iraqi Administrative Sciences Journal ◽

10.33013/iqasj.v1n2y2017.pp650-661 ◽

2017 ◽

Vol 1 (2) ◽

pp. 650-661

Author(s):

Amer M. Ibrahim ◽

Ali Adwan Hmood ◽

Noor Al Huda H. Ahmed

Keyword(s):

Thermal Conductivity ◽

Compression Strength ◽

Chemical Interaction ◽

Economic Feasibility ◽

Polymer Concrete ◽

Light Weight ◽

Novolac Resin ◽

Ordinary Concrete ◽

Acoustic Insulation ◽

Light Weight Aggregate

The purpose of this study is to examine the effect of adding novolac resin by different volumetric percentages to concert as a light weight aggregate In addition to the economic feasibility of the use of these concrete in the field of build and construction .they investigated tht the compression strength, thermal conductivity, acoustic insulation and densities. The results showed ultimate compression strength and acoustic insulation by melting novolac and added to the cement and sand as a polymer concrete in the hot state (by melting novoac >90c).However added novolac resin as aggregate in the cold state to the concrete increase thermal conductivity and increasing compression strength and acoustic insulation .This results gained by chemical interaction of novolac and cement.

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Fabrication of cellulose-based aerogel for thermal and acoustic insulation applications

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/947/1/012030 ◽

2021 ◽

Vol 947 (1) ◽

pp. 012030

Author(s):

Ngan N T Thai ◽

Quyen N D Chau ◽

Nam D Do ◽

Tuan D Tran ◽

Ha K P Huynh ◽

...

Keyword(s):

Thermal Conductivity ◽

Sound Absorption ◽

Young Modulus ◽

High Porosity ◽

Water Contact ◽

Acoustic Insulation ◽

Conductivity Water ◽

Oil Adsorption ◽

High Sound ◽

Absorption Measurements

Abstract A method to prepare aerogels from rice straw and polyvinyl alcohol in the presence of fiberglass and glutaraldehyde is herein reported. The morphology, pore structure and physical properties of the aerogels were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), thermal conductivity, water contact angle (WCA) measurements, oil adsorption and sound absorption measurements. The obtained aerogels should be considered as a promising material for upcoming applications, since it has high porosity (up to 93.72%), low density (0.083-0.127 g/cm3), super low thermal conductivity (0.032-0.048 W/mK), high Young modulus (0.201-1.207 MPa), high sound absorption (absorption coefficient of 0.87) and a good oil adsorption capacity (4.8 g/g).

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