On February 15, 2024, Professor Fang Guohao published a review paper titled "Influence of novel hybrid nanoparticles as a function of admixture on responses of engineered geopolymer composites: A review " in the Journal of Building Engineering (JCR Q1, IF: 6.4). The review discusses the significant impact of nanoparticles on the geopolymerization process, exploring the effects of Engineered Geopolymer Composites (EGC) and Engineered Cementitious Composites (ECC) on the carbon footprint, microphysical, and mechanical properties of composites used in the construction industry. Eskinder Desta Shumuye, Associate Researcher at the Higher Institute of Shenzhen University, is the first author, with Professor Fang Guohao as the corresponding author, and Shenzhen University as the first completion unit.

Engineered Geopolymer Composites (EGC) are novel materials that could potentially replace their cement-based alternatives, Engineered Cementitious Composites (ECC). Furthermore, to minimize the environmental impact, massive energy consumption, and carbon emissions of cement production, the use of EGC composite materials with high strength, flexibility, and durability of nanoparticles has been proposed. One option to develop and modify the extraordinary properties of EGC is to add other potential selective materials such as nanoparticles (NPs). This paper outlines the research on adding different types of nanoparticles (such as nano-zinc oxide, nano-silicon dioxide, nano-titanium dioxide, nano-aluminum oxide, nano-carbon black, etc.) in various EGC composite materials. In addition to the analysis of carbon emissions and cost comparison, the review includes an evaluation of the flowability, mechanical properties, and durability of composite materials under various exposure conditions. The purpose of this paper is to summarize the current understanding of the use of nanoparticles in geopolymer composites and to determine the acceptable doping rate and methods for controlling the dispersion of nanoparticles in these composites. Additionally, the review explores how these composite materials respond to stress and different environmental exposure conditions.

This research was supported by the National Natural Science Foundation and the Shenzhen Municipal Science and Technology Innovation Commission.The original article can be found at:https://www.sciencedirect.com/science/article/abs/pii/S2352710224003504

Fig.1 Classification of nanoparticles based on applications