Development of Engineered Geopolymer Composites Bricks from Seawater and Construction Waste

ongoing

The SWCW-EGCBricks project focuses on developing lightweight, high-strength engineered geopolymer composites (EGCs) bricks using seawater and construction and demolition waste (CDW). The use of geopolymers and upcycled concrete waste will address sustainability challenges by reducing environmental impact while maintaining high material performance. The project will introduce seawater to replace fresh water during manufacturing, reducing costs and promoting the use of renewable resources in the building industry. Following the pyramid principle of emerging composite material design, the project will be achieved through three key objectives: (1) determine the formulation of geopolymer, using a systematic approach to optimize the performance of the geopolymer when it is working with concrete waste and seawater; (2) establish a multi-scale model based on experimental microstructural and mechanical analysis to predict the performance of EGCs with varying fiber content, focusing on strength, toughness, and weight reduction; and (3) conduct manufacturing trails for EGC bricks, with durability and mechanical investigation, along with footprint calculation. To ensure accurate results, a combination of laboratory-scale trials and multiscale modeling techniques will be applied. Advanced microstructural characterization techniques such as SEM, XRD, and 3D microtomography will be employed to analyze the interaction between fibers and the geopolymer matrix. The project will also develop a predictive model that links fiber content to mechanical properties, guiding the optimization process for a high-performance, eco-friendly product. In addition to experimental work, the project will include a comprehensive environmental assessment, evaluating the carbon footprint of the materials developed. This will ensure that the new bricks align with the objectives of reducing greenhouse gas emissions and promoting circular construction practices.