Geopolymer concrete is a revolutionary departure from conventional Portland cement-based materials due to reduced carbon emissions, enhanced durability, and compatibility with innovative construction techniques such as 3D printing. The present review synthesizes recent research (mainly 2020-2025) on geopolymer pervious concrete, with a focus on its permeability for stormwater management, together with superior durability in chemical and thermal aggression, high compressive and flexural strength achievements, and low-energy production processes. Adaptability to extrusion-based and powder-based 3D printing technology has been widely reported. Results show that the compressive strengths of fly ash/slag-blended geopolymers reached more than 60-95 MPa, with excellent acid/sulfate attack resistance and an embodied energy below that of OPC. Optimization of rheology for printability, interlayer bonding, and rapid setting times remains a challenge. Incorporating fibers, nanomaterials, and one-part activators further enhances the mechanical performance and sustainability of geopolymers. Research gaps have been identified in long-term field performances of 3D-printed geopolymer pervious structures, and possible pathways have been proposed toward large-scale adoptions of GPCs in eco-friendly urban infrastructures.
Jaspinder Singh (Sun,) studied this question.