Eco-friendly construction material: mechanical and durability properties of flyash-lime-gypsum bricks.
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| Title: | Eco-friendly construction material: mechanical and durability properties of flyash-lime-gypsum bricks. |
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| Authors: | Hameed, Asif1 (AUTHOR), Ejaz, Zukhruf1 (AUTHOR), Sultan, Muhammad1 (AUTHOR), Rasool, Ali Murtaza2 (AUTHOR) ali_eng@hotmail.com, Shaukat Khan, Qasim1 (AUTHOR) |
| Source: | International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 6, p1581-1600. 20p. |
| Subject Terms: | *Compressive strength, *Bricks, *Permeability, *Mechanical behavior of materials, *Durability, *Brick industry, *Ecological impact, *Sustainable buildings |
| Abstract: | This study investigates the use of fly ash (FA) as a sustainable substitute in brick production, aiming to reduce environmental impact while enabling responsible FA disposal. Flyash-Lime-Gypsum (FaL-G) bricks offer reduced emissions of topsoil, smoke, and heavy metals. The study is divided into two experimental phases. Phase I focuses on optimizing the mix and manufacturing parameters for small cube specimens by evaluating the effects of different FA-to-sand ratios (0.30:0.70, 0.35:0.65, and 0.40:0.60), constant gypsum (2%) and lime (12.5%) contents, and varying casting pressures (0, 5, and 10 MPa) on compressive strength. Phase II builds upon the optimal mix from Phase I to fabricate full-sized bricks (228 mm × 114 mm × 76 mm), analyzing their mechanical and durability performance under varied lime contents (10–20%) and casting pressures (0–20 MPa). Results show that compressive strength and density increased with casting pressure and lime content, while water absorption decreased. The FaL-G bricks outperformed traditional clay bricks in strength, water resistance, and acid resistance, complying with ASTM C62–23 and C67–21 standards. These findings position FaL-G bricks as a sustainable, cost-effective alternative to conventional bricks. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | This study investigates the use of fly ash (FA) as a sustainable substitute in brick production, aiming to reduce environmental impact while enabling responsible FA disposal. Flyash-Lime-Gypsum (FaL-G) bricks offer reduced emissions of topsoil, smoke, and heavy metals. The study is divided into two experimental phases. Phase I focuses on optimizing the mix and manufacturing parameters for small cube specimens by evaluating the effects of different FA-to-sand ratios (0.30:0.70, 0.35:0.65, and 0.40:0.60), constant gypsum (2%) and lime (12.5%) contents, and varying casting pressures (0, 5, and 10 MPa) on compressive strength. Phase II builds upon the optimal mix from Phase I to fabricate full-sized bricks (228 mm × 114 mm × 76 mm), analyzing their mechanical and durability performance under varied lime contents (10–20%) and casting pressures (0–20 MPa). Results show that compressive strength and density increased with casting pressure and lime content, while water absorption decreased. The FaL-G bricks outperformed traditional clay bricks in strength, water resistance, and acid resistance, complying with ASTM C62–23 and C67–21 standards. These findings position FaL-G bricks as a sustainable, cost-effective alternative to conventional bricks. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19392699 |
| DOI: | 10.1080/19392699.2025.2505447 |
