Secondary cementitious materials
Low Carbon Concrete Routemap, Setting the agenda for a path to net zero, draft for consultation published by the Institution of Civil Engineers in 2021, defines secondary cementitious materials (SCM) as: ‘Materials that may be used to replace a proportion of Portland cement, CEM I (Portland Cement) or clinker in blended cements or concrete. When added at the concrete mixing plant, such SCMs are referred to as ‘cementitious additions’ as they are added to high clinker CEM I. SCMs may be naturally occurring with minimal processing or may arise from wastes or by-products from other industries.”
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