Concrete cancer - what's the cure for 9% of global emissions? - architecture and design news - API Magazine

Concrete cancer—the corrosion of reinforcement steel caused by carbonation and chloride ingress—accounts for roughly 9% of global greenhouse gas emissions when you factor in cement production and the energy-intensive repair cycles that follow. The article examines the chemistry behind concrete degradation and explores emerging remedial technologies and material science approaches aimed at reducing both the environmental footprint of cement manufacturing and the frequency of costly repairs needed across aging building stock. Solutions under investigation include lower-carbon binders, concrete additives that slow carbonation, and protective coatings that extend service life before major intervention becomes necessary.

For Australian remedial practitioners and strata managers, this piece connects two pressing issues: the mounting cost of concrete cancer repairs in aging residential and commercial buildings, and the growing pressure from clients and regulators to adopt lower-emission repair methods. As latent defect claims and rectification budgets continue climbing, understanding which remedial systems and materials genuinely slow degradation—rather than simply treating symptoms—will become a competitive advantage. Specifiers and contractors who can demonstrate durability gains while reducing embodied carbon in repair specifications will meet both risk management and sustainability mandates.