Bibliometric Analysis, Mechanical Properties, and Durability Performance of Fly Ash Based Geopolymer Concrete

A three-phase methodology was developed to achieve the research goals. The first phase discussed the general background of geopolymer concrete and the properties of fly ash. The properties of fly ash include its physical, chemical, and mineralogical composition, which make it suitable for use in concrete. The second phase discusses a bibliometric analysis using VOSviewer software (version 1.6.21). The bibliometric analysis covers research from 2004 to 2025. The bibliometric analysis systematically reviews and categorizes the available literature on fly ash-based geopolymer concrete, which includes publication sources, co-authorship analysis (authorships, organizations, and countries), and co-occurrence of keywords. The third phase discusses the mechanical properties (compressive strength, tensile strength, and flexural strength), durability aspects (water absorption, porosity, resistance to acid attacks, freeze–thaw resistance, and sulfate attacks), and the microstructural characteristics. Finally, the review identifies the research gap and recommends future research to enhance fly ash-based geopolymer concrete performance.