Publication: Durability Performance of Geopolymer Concrete: A Review
Date
2022
Authors
Wong L.S.
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
Geopolymer concrete is produced from the geopolymerization process, in which molecules known as oligomers integrate to form geopolymer networks with covalent bonding. Its production expends less thermal energy and results in a smaller carbon footprint compared to Ordinary Portland Cement (OPC) concrete. It requires only an alkaline activator to catalyze its aluminosilicate sources such as metakaolin and fly ash, to yield geopolymer binder for the geopolymerization to take place. Because of its eco-friendly technology and practical application, current research interest is mainly concentrated on the endurance of geopolymer concrete to resist heat and chemical aggressions. As such, it is pertinent for this review article to provide critical insight into the recent progress in research on the durability of geopolymer concrete. One significant outcome of the review is that the admixture of geopolymer concrete could be blended with additives such as micro-silica and fibers such as polypropylene fibers, to enhance its durability. The review on the durability aspects of geopolymer concrete showed that it had high compressive strength at an optimal elevated temperature, low to medium chloride ion penetrability, and high resistance to acid attack and abrasion. This makes geopolymer concrete a viable candidate to replace OPC concrete in the construction industry. � 2022 by the author. Licensee MDPI, Basel, Switzerland.
Description
Abrasion; Acid resistance; Alkalinity; Aluminosilicates; Chemical bonds; Chlorine compounds; Compressive strength; Concretes; Construction industry; Erosion; Fly ash; Geopolymers; Inorganic polymers; Polypropylenes; Portland cement; Silica; Acid attack; Alkaline activators; Aluminosilicate source; Chloride ion penetrability; Chloride ions; Durability performance; Geopolymer concrete; Geopolymerization; Ordinary Portland cement; Portland cement concretes; Durability