Recent advances in carbon nanotube-geopolymer composite

Benefiting from the superior engineering properties and reduced environmental footprints, geopolymer is being considered as an alternative to Portland cement for construction applications. The incorporation of carbon nanotube into geopolymer matrix contributes to improve the mechanical and electrical behaviours of resultant composites. Moreover, the obtained carbon nanotube-geopolymer composite possesses functionalities needed for future, i.e. improved safety and sustainability composed with smart features like self-condition monitoring. This kind of innovative and promising composite is attracting increasing attention from scientific and engineering fields. This work reviews the state-of-the-art progresses in the fabrication and characterization of carbon nanotube-geopolymer composites, including dispersion technologies of carbon nanotube, functional characteristics and smart features of resultant composites, and corresponding reinforcement mechanisms. Discussions on current research limits and potential opportunities are made to promote the investigation and application of carbon nanotube-geopolymer composite as advanced structural material. (C) 2020 Elsevier Ltd. All rights reserved.