METHOD FOR PRODUCING CEMENT

摘要

A method for producing cement useful for preparing pastes, mortars, concretes and other cement-based materials, which method comprises a mechano-chemical treatment of cement. The invention is characterized in that the method comprises a two-stage mechano-treatment of a mixture of cement and at least one component of two components, the first component being an SiO2 containing microfiller and the second component being a polymer in the form of a powdery water-reducing agent, in that in the first stage the cement and said first and/or said second component are intensively mixed in a dry state, in that in the second stage the mixture obtained in said first stage is treated in a milling equipment where the particles in said mixture receive in a quick succession a large number of direct-changed impact impulses and in that said treatment in said second stage is carried out during a sufficiently long period of time in order that a 1-day compressive strength of 20 millimeter side cube cement paste, which has been properly compacted under vibration and hardened at +20 DEG C in sealed conditions at least equals 60 MPa.