scholarly journals Analysis and Optimization of Hybrid Soil Properties for Gel Based Roof Tiles

2021 ◽  
pp. 17-24
Author(s):  
Anuja Narayanan ◽  
◽  
Ashok K ◽  
Prasanth B ◽  
Sukil Saravanan R ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Energy Efficient ◽  
Bending Strength ◽  
Strength Test ◽  
Structural Components ◽  
Insulation Property ◽  
Warming Climate ◽  
Wear And Tear ◽  
Water Absorption Test ◽  
Thermal Insulation Property

Our current 21st century has seen more drastic changes in terms of environmental conditions due to global warming, climate change and deforestation. This has shown a great rise in the global temperature throughout the world. Normally, the roof top of a building is provided with tiles to protect the structural components and to create a comfortable environment. The tiles can be made of materials like clay, concrete, fly ash, lime etc. Due to the prevailing environmental challenges, there is a need for the tiles to be made as with more energy efficient material that supports thermal insulation and cost effectiveness. Aerogel and hydrogel are the gel based product that are used in our current work to enhance the thermal insulation property of the tiles. Various tests such as water absorption test, wet and dry cycle test, bending strength test, thermal conductivity test, wear and tear test are carried out on the tile to quantify its characteristics. All the above shows better value than the normal commercial tile product.

scholarly journals Analysis and Optimization of Hybrid Soil Properties for Gel Based Roof Tiles

2021 ◽  
Vol 1 (2) ◽  
pp. 17-24
Author(s):  
Anuja Narayanan* ◽  
Ashok K. ◽  
Prasanth B. ◽  
Sukil Saravanan R.
Keyword(s):  
Thermal Insulation ◽  
Energy Efficient ◽  
Bending Strength ◽  
Strength Test ◽  
Structural Components ◽  
Insulation Property ◽  
Warming Climate ◽  
Wear And Tear ◽  
Water Absorption Test ◽  
Thermal Insulation Property

Our current 21st century has seen more drastic changes in terms of environmental conditions due to global warming, climate change and deforestation. This has shown a great rise in the global temperature throughout the world. Normally, the roof top of a building is provided with tiles to protect the structural components and to create a comfortable environment. The tiles can be made of materials like clay, concrete, fly ash, lime etc. Due to the prevailing environmental challenges, there is a need for the tiles to be made as with more energy efficient material that supports thermal insulation and cost effectiveness. Aerogel and hydrogel are the gel based product that are used in our current work to enhance the thermal insulation property of the tiles. Various tests such as water absorption test, wet and dry cycle test, bending strength test, thermal conductivity test, wear and tear test are carried out on the tile to quantify its characteristics. All the above shows better value than the normal commercial tile product.

Study on Properties of Foam Concrete Based on Fractal Theory

2011 ◽  
Vol 194-196 ◽  
pp. 1916-1919 ◽  
Author(s):  
Wen Ling Tian ◽  
Jiang Bo Yang ◽  
Xiao Yan Zhao
Keyword(s):  
Fractal Dimension ◽  
Fly Ash ◽  
Thermal Insulation ◽  
Fractal Theory ◽  
High Strength ◽  
Sound Insulation ◽  
Foam Concrete ◽  
Insulation Property ◽  
Foaming Agent ◽  
Thermal Insulation Property

Foam concrete is provided with light weight, thermal insulation, sound insulation and fire resistance, good seismic performance and other characteristics. To improve properties of foam concrete microstructure is studied with the help of fractal theory, fractal dimension related to mechanical properties and thermal performance of foam concrete is calculated by MATLAB language program. The results indicate that the microstructure of foam concrete showed significant fractal character, the fractal dimension is between 1.3 and 2.0. Apparent density, 28d compressive strength, and thermal conductivity decreases with the increase of fly ash and foaming agent content, fractal dimension increased. Formulas of fractal dimension and the fly ash, foaming agent content were established. Foam concrete with low density, high strength, and good thermal insulation property will be prepared conducted by the formulas.

The Simulation of Thermal Insulation Property of Ceramic Fibers

2002 ◽  
Vol 224-226 ◽  
pp. 825-830 ◽  
Author(s):  
Xin Jun Zeng ◽  
Shi Yong Wang ◽  
Hui Wang ◽  
Lingke Meng ◽  
Jian Qing Wu
Keyword(s):  
Thermal Insulation ◽  
Ceramic Fibers ◽  
Insulation Property ◽  
Thermal Insulation Property

Thermal Insulation Property of Newspaper Membrane Encased Soil-Based Aerated Lightweight Concrete Panels

2011 ◽  
Vol 261-263 ◽  
pp. 783-787 ◽  
Author(s):  
Soon Ching Ng ◽  
Kaw Sai Low ◽  
Ngee Heng Tioh
Keyword(s):  
Temperature Gradient ◽  
Thermal Insulation ◽  
Lightweight Concrete ◽  
Clayey Soil ◽  
Heat Insulation ◽  
Control Panel ◽  
Insulation Property ◽  
Concrete Panels ◽  
Thermal Insulation Property ◽  
Insulation Performance

Roof and wall are known to be responsible for heat entering into a building and should therefore be thermally insulated in order to lessen energy consumption required for air-conditioning. In this study, four soil-based aerated lightweight concrete (ALC) panels each measures 750 mm (length) x 750 mm (breadth) x 70 mm (thick) with different aerial intensity of newspaper membrane encased were produced and tested on their thermal insulation property. For environmental friendly and economy reasons, clayey soil was used in place of sand to produce the ALC panels and they were tested in the Thermal Laboratory for twenty hours. Temperature gradient was computed based on the surface temperature measured during the test. The results obtained indicated that newspaper membrane encased soil-based ALC panels have superior heat insulation performance compared to control panel in terms of temperature gradient. It is found that the temperature gradient increased from 1.92 °C/cm to 2.08 °C/cm or 8.3% higher than control panel with just merely 0.05 g/cm2 of newspaper membrane encased.

scholarly journals Thermal insulation property of graphene/polymer coated textile based multi-layer fabric heating element with aramid fabric

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hyelim Kim ◽  
Han Seong Kim ◽  
Sunhee Lee
Keyword(s):  
Surface Temperature ◽  
Thermal Insulation ◽  
Temperature Difference ◽  
Protective Clothing ◽  
Woven Fabrics ◽  
Heating Element ◽  
Electrical Heating ◽  
High Porosity ◽  
Insulation Property ◽  
Thermal Insulation Property

Abstract This study investigated the thermal insulation properties based on electrical heating test of graphene-based multi-layer fabric heating elements to confirm the possibility of application for fabric heating element for protective clothing. Four layers were designed as layers of outer, filler, electrical heating textile, and lining. The outer fabrics used two different densities of aramid woven fabrics (LD_ARW and HD_ARW), an aramid knit (AR_KT), and nonwoven (AR_NW). Fabricated graphene/polymer coated electrical heating textile (GR) exhibits a surface temperature of about 85 °C, a current of 0.12 A, and a power of 3 W when 30 V is applied. As composed with 4-layer, the surface temperature of LD_ARW and HD_ARW used as the outer for sample indicated less than 50 °C, due to their excellent heat resistance property; whereas, when AR_KT and AR_NW were used, the temperature was about 50 °C. This is because their fine fibers form high porosity that can entrap air. As a result of the thermal insulation properties, the temperature difference of each layer was in the order ΔT(GR-N3) < ΔT(GR-Lining) < ΔT(GR-Outer). In particular, when AR_NW was used as the outer fabric, ΔT(GR-Outer) was decreased by about 10 °C, compared with that of the other outer fabric. By the effect of relative humidity under dry 25% RH and comfortable 55% RH, the temperature difference was decreased under 55% RH; thus, the thermal insulation property was improved under comfortable humidity condition. Therefore, the best thermal insulation performance was exhibited when AR_NW was used as outer under 55% RH, and it is expected to expand its application to fabric heating element for protective clothing.

scholarly journals Feasibility of Using Modified Silty Clay and Extruded Polystyrene (XPS) Board as the Subgrade Thermal Insulation Layer in a Seasonally Frozen Region, Northeast China

2019 ◽  
Vol 11 (3) ◽  
pp. 804 ◽  
Author(s):  
Qinglin Li ◽  
Haibin Wei ◽  
Leilei Han ◽  
Fuyu Wang ◽  
Yangpeng Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Thermal Insulation ◽  
Oil Shale ◽  
Pollution Index ◽  
National Standards ◽  
Silty Clay ◽  
Insulation Layer ◽  
Insulation Property ◽  
Thermal Insulation Property ◽  
Seasonally Frozen Regions

To achieve the purposes of storing industry solid wastes and enhancing subgrade stability in seasonally frozen regions, Structure III, which utilized the modified silty clay (SC) and extruded polystyrene (XPS) board as a novel subgrade thermal insulation layer (NSTIL), was presented. The above modified SC consisted of oil shale industry solid waste, fly ash and SC. In terms of environmental impact, the average single pollution index, the Nemerow integrated pollution index and national standards were carried out to estimate whether the modified SC could be used as a subgrade filler. These results show that, although the modified SC will produce pollution to the environmental background, the concentration of each hydrochemical constituent from the modified SC meets the corresponding national standards in China. In terms of the thermal insulation capability, the numerical simulation of coupling moisture and temperature was applied to analyze that of Structures I, II and III. The research results show that the numerical results of the Structure I are approximated to the official website information of Jilin province, indicating that the above numerical simulation is effective for coupling moisture and temperature of frozen soil. Both modified SC and NSTIL have the advantage of good thermal insulation property, but the thermal insulation property of the NSTIL is greater. Furthermore, the NSTIL at the top of the Structure III can protect the SC of the experimental road from the damage of frost heave. The research results are of great significance for reducing environmental pollution caused by oil shale industry solid waste and fly ash, increasing the utilization rate of industrial waste and enhancing the subgrade stability in seasonally frozen regions.

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