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Search Results (3)

Search Parameters:
Keywords = steatite powder

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30 pages, 21519 KiB  
Article
The Use of Steatite Powder Waste as an Aggregate for the Manufacture of Earth Blocks—An Evaluation of Its Impact on Physical, Mechanical and Thermal Conductivity Properties
by Carlos Alberto Casapino-Espinoza, José Manuel Gómez-Soberón and María Consolación Gómez-Soberón
Buildings 2025, 15(10), 1605; https://doi.org/10.3390/buildings15101605 - 9 May 2025
Viewed by 1174
Abstract
Earthen construction is a sustainable alternative to conventional building materials due to its low environmental impact; however, both its mechanical strength and durability differ from conventional building materials. Different physical and chemical stabilization techniques are used to improve the mechanical properties of the [...] Read more.
Earthen construction is a sustainable alternative to conventional building materials due to its low environmental impact; however, both its mechanical strength and durability differ from conventional building materials. Different physical and chemical stabilization techniques are used to improve the mechanical properties of the incorporated elements, although these increase the carbon footprint. The present research focuses on studying mineral stabilization, specifically the incorporation of powdered steatite residues (PSRs) in matrices for the manufacture of earth blocks (EBs) to improve their physical, mechanical and thermal properties. Through an experimental study to analyze the EB, it is established that the use of this mineral as an aggregate in the different matrices studied registered the following extreme values: a reduction in porosity by 27.43%, an increase in bulk density by 3.73%, a 58.91% reduction in dimensional variation, an increase in compressive strength of 24.7% and in flexural strength of 41.2%, a 36.33% reduction in erosion, and a maximum extreme value in thermal conductivity equal to 1.48 W/(m·k). These results allow us to establish that the use of PSRs as a mineral stabilizer in the manufacture of EBs contributes to sustainability criteria and provides physical, mechanical and thermal improvements. Full article
(This article belongs to the Special Issue Advances in Environmentally-Friendly Building Materials in Construction)
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10 pages, 2763 KiB  
Article
Effect of Ball-Milled Steatite Powder on the Latent Heat Energy Storage Properties and Heat Charging–Discharging Periods of Paraffin Wax as Phase Change Material
by Sathiyalingam Kannaiyan, Song-Jeng Huang, David Rathnaraj and S. A. Srinivasan
Micromachines 2022, 13(9), 1456; https://doi.org/10.3390/mi13091456 - 2 Sep 2022
Cited by 3 | Viewed by 2172
Abstract
Phase change materials (PCMs) serve as an advantage in thermal energy storage systems utilizing the available sensible and latent heat. The PCMs absorb the thermal energy during the charging process and release it into the environment during the discharging process. Steatite is low [...] Read more.
Phase change materials (PCMs) serve as an advantage in thermal energy storage systems utilizing the available sensible and latent heat. The PCMs absorb the thermal energy during the charging process and release it into the environment during the discharging process. Steatite is low cost and eco-friendly, with a thermal stability up to 1000 °C, and it is abundantly available in nature. This study investigates the steatite–paraffin wax-based PCM and the effect on the cyclic loads using a horizontal triplex-tube latent heat energy storage system. The thermal conductivity value of the milled steatite-based PCM composite was 7.7% higher than pure PCM. The PCM with the ball-milled steatite-fabricated composite exhibited better discharging characteristics, increasing the discharge time by 50% more than that of the pure paraffin wax. Moreover, the milled steatite-based PCM outperformed that incorporated with non-milled steatite with paraffin. Full article
(This article belongs to the Special Issue Advanced Functional Materials for Energy Harvesting and Storage Devices)
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13 pages, 3254 KiB  
Article
Steatite Powder Additives in Wood-Cement Drywall Particleboards
by Viet-Anh Vu, Alain Cloutier, Benoît Bissonnette, Pierre Blanchet and Christian Dagenais
Materials 2020, 13(21), 4813; https://doi.org/10.3390/ma13214813 - 29 Oct 2020
Cited by 7 | Viewed by 2681
Abstract
The objective of this study was to develop a new drywall wood-based particleboard as an alternative to gypsum board. Various development iterations have led to the use of wood particles, steatite powder and Portland cement. The resulting outcome shows that screw withdrawal resistance [...] Read more.
The objective of this study was to develop a new drywall wood-based particleboard as an alternative to gypsum board. Various development iterations have led to the use of wood particles, steatite powder and Portland cement. The resulting outcome shows that screw withdrawal resistance was improved by 37% and bending properties by 69% compared to gypsum board of a similar density (0.68–0.70). The raw surface of the boards is of good quality and comparable to the paper-faced surface of gypsum board. Furthermore, the reaction to fire was evaluated through bench-scale test with a cone calorimeter. The investigated particleboard did not reveal visual signs of combustion after 20 min when exposed to a radiant heat of 50 kW/m2, while burning of the overlay paper of gypsum board occurred at about 57 s, suggesting that wood-cement-steatite powder particleboard could be classified as a quasi non-combustible material. Full article
(This article belongs to the Special Issue Supplementary Cementitious Materials in Concrete)
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