Concrete and Cement Materials Research

Concrete is the most widely used construction material on Earth, but producing its key ingredient—Portland cement—releases roughly eight percent of global CO₂ emissions, making the search for lower-carbon alternatives one of civil engineering's more urgent problems. Researchers are developing binders such as geopolymers and alkali-activated materials, which chemically transform industrial byproducts like fly ash into structural materials without the high-temperature kiln process that makes conventional cement so carbon-intensive. Understanding exactly how these alternative binders harden—their hydration and reaction mechanisms at the molecular scale—remains an active area of investigation, as does the use of nanotechnology to tailor microstructure and improve durability. Central open questions include how to reliably predict long-term performance across diverse mix compositions and environmental conditions, and how to scale production in ways that make sustainable concrete economically competitive with the materials it aims to replace.

Works

126,374

Total citations

2,582,369

Keywords

GeopolymerCementitious MaterialsFly AshAlkali-Activated MaterialsSustainable ConcreteCarbon Emissions