Method for producing coated particles, suspension of coated particles and its use

摘要

The invention relates to a method for producing of coated particles, which are suitable for manufacture of concrete. The method comprises obtaining or forming a first aqueous suspension of carrier particles, and adding water-soluble silicate, such as sodium silicate, and a water-soluble calcium source, such as calcium oxide or calcium hydroxide, to the first aqueous suspension. The suspension is mixed, whereby a coating comprising calcium silicate hydrate, CHS, is formed on at least a part of the surface of the carrier particles and dry content of the obtained suspension is 10 weight-%. The invention relates also to the obtained suspension and its use.