Cementitious materials are ________ based materials.

Cementitious materials are classified as dry powder-based because their active constituent is a cement-derived powder such as Portland cement, fly ash, or slag cement. In firestop and construction applications, these materials are packaged as dry powders and mixed with water on-site to form a paste that cures into a rigid, fire-resistant barrier. This chemical composition fundamentally separates them from liquid-carrier-based material categories.

Latex-based materials use a water-emulsion polymer as their carrier medium, not a cement-derived dry powder base.

Solvent-based materials rely on chemical solvents as the carrier, which evaporate during curing - a mechanism entirely different from cementitious hydration.

Sand is a granular aggregate filler that may be combined with cementitious products, but it is not the defining base constituent of the material class.