Developement of a Next-Generation Geomaterial Based on Aluminosilicate Sources: A Review

Abstract

Geopolymers can be considered as geomaterials due to their composite nature and applications in various areas of construction and civil engineering. Geopolymers are inorganic materials that can synthesized from natural raw materials, such as fly ash, rice husk ash, metakaolin, or clays, through reaction with alkaline solutions. They exhibit interesting properties such as mechanical strength, and they stand out as eco-friendly binders due to their ability to reduce carbon footprint and promote the sustainability of construction structures. This article aimed to review the current state of the art in the production of geopolymer pastes and mortars based on aluminosilicate sources and their properties, with a particular focus on geopolymers incorporating dredged sediment. The review includes a brief assessment of the use of aluminosilicate sources in designing geopolymer mixes, in addition to identifying key factor influencing the performance of geopolymers containing sediments. The latest data related to the mechanical and durability properties of geopolymers are presented, while also addressing the environmental impacts.