silikaattiositteet

Silikaattiositteet, known in English as silicate binders or silicate cements, are a class of inorganic binders derived from alkali metal silicates, primarily sodium silicate (water glass) or potassium silicate. These binders are formed when soluble silicate salts react with water and carbon dioxide from the air, or through chemical reactions with other specific compounds. The hardening process involves the formation of a solid silica gel matrix.

Silicate binders are recognized for their excellent heat resistance, fire resistance, and chemical inertness, particularly against acids and solvents. They also offer good adhesion to various inorganic substrates like stone, concrete, and ceramics. Their porous structure can provide insulation properties.

Applications for silikaattiositteet are diverse. They are used in refractory materials, such as furnace linings and kiln furniture, due to their high-temperature stability. In construction, they can serve as soil stabilizers, consolidate porous rock, and act as a component in specialized mortars and coatings. They are also employed in the production of foundry molds and cores, and as a binding agent in certain types of coatings and paints, especially for mineral-based surfaces. The environmental profile is generally considered favorable as they are inorganic and do not release harmful volatile organic compounds during curing.