A comprehensive review of the fresh, mechanical and durability properties of sustainable low carbon footprint one-part geopolymer composites
Volume Title: ICASGE2025
Paper ID : 1136-ICASGE-FULL (R1)
Authors
1Dr Mariam Ghazy
2Prof. Elsaid Maaty
Abstract
The construction sector is a significant contributor to global greenhouse gas emissions, with Portland cement (PC) production accounting for approximately 7-8% of CO2 emissions. In contrast, two-part geopolymer composites (TPG) can reduce CO2 emissions by up to 80% compared to PC, but its use is limited due to challenges like handling corrosive alkaline solutions.
One-part geopolymer composites (OPG) stand out for its environmental and economic advantages. It has a 65% lower CO2 footprint compared to PC and a 22% reduction compared to TPG, Additionally, OPG can lower costs by up to 80% compared to PC. Its preparation is simplified as it requires only "just add water" for activation, making it suitable for various applications without the need for heat curing.
This review aims to highlight the latest advancements in OPG mixes, including the exploration of aluminosilicate precursors, solid activators, and admixtures. It examines various mix design methods, and the impact of key parameters on both fresh and hardened properties of OPG, particularly regarding curing methods. The durability of OPG is also assessed in terms of sulfate and acid resistance, carbonation, and high-temperature exposure. Furthermore, this review identifies research gaps in practical applications and mix design methods that have not been previously addressed.
Recent research indicates that OPG demonstrates promising mechanical and durability properties, comparable to TPG and superior to PC, making it a competitive alternative for sustainable construction and eco-friendly building solutions without compromising performance
One-part geopolymer composites (OPG) stand out for its environmental and economic advantages. It has a 65% lower CO2 footprint compared to PC and a 22% reduction compared to TPG, Additionally, OPG can lower costs by up to 80% compared to PC. Its preparation is simplified as it requires only "just add water" for activation, making it suitable for various applications without the need for heat curing.
This review aims to highlight the latest advancements in OPG mixes, including the exploration of aluminosilicate precursors, solid activators, and admixtures. It examines various mix design methods, and the impact of key parameters on both fresh and hardened properties of OPG, particularly regarding curing methods. The durability of OPG is also assessed in terms of sulfate and acid resistance, carbonation, and high-temperature exposure. Furthermore, this review identifies research gaps in practical applications and mix design methods that have not been previously addressed.
Recent research indicates that OPG demonstrates promising mechanical and durability properties, comparable to TPG and superior to PC, making it a competitive alternative for sustainable construction and eco-friendly building solutions without compromising performance
Keywords
One-part geopolymer composites (OPG); Fresh and hardened properties; Curing methods; Carbonation; High-temperature exposure
Subjects