Cementti

Cementti is a term encountered in some technical and industry literature to describe modern cementitious binders that aim to reduce clinker content and lower the environmental footprint of cement. It is not a single standardized product; the term is used variably to denote Portland cement blends, belite-rich binders, calcium sulfoaluminate cements, geopolymers, or other binders that meet common performance goals.

Most cementti formulations involve clinker, gypsum, and supplementary cementitious materials (SCMs) such as fly ash, slag, natural pozzolans, silica fume, metakaolin, or calcined clay. Some approaches replace all or part of clinker with alternative binders. Cementti is typically produced by intergrinding clinker with gypsum and SCMs or by blending ground components after clinkering.

Properties of cementti depend on the formulation but generally include control over setting time, early and long-term strength development, and durability. The use of SCMs can reduce the heat of hydration and improve resistance to chemical attack, while reducing embodied carbon. Workability and compatibility with admixtures remain important design considerations, and performance varies with raw materials and curing conditions.

Applications include general structural concrete, precast elements, and repair mortars. Cementti aims to support lower-emission construction but faces challenges related to standardization, supply chain consistency, cost, and variable performance across sources.

Standards and regulation: In most jurisdictions cement and concrete are governed by standards that specify defined cement types and test methods (for example EN 197-1 in Europe or ASTM C150 in the United States). Any cementti formulation intended for structural use would need to meet applicable standards and project specifications.