METHOD FOR PRODUCTION OF PLAIN CONCRETE BLOCKS WITH REPLACEMENT OF SOME CEMENT WITH FLUE ASH AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC E04B1/04 

FIELD: construction.

SUBSTANCE: method for production of plain concrete blocks with replacement of some cement with flue ash includes hardening of concrete mix that contains cement as binder and flue ash. In process of concrete mix hardening, secondary short-circuited electric currents are induced in it volume by means of curb installation with concrete mix into device for induction of secondary short-circuited electric currents. Device for induction of secondary short-circuited electric currents comprises body with AC electromagnet installed inside it. Besides it additionally comprises bed plate, in which upper and lower electromagnet drives are mounted in the form of two parallel installed sets of pair magnetic plates with windings that are joined to each other serially through single winding and making two separate circuits. At the same time AC electromagnet is made with spaced poles for installation of curb with concrete mix between them and is installed on upper electromagnet drive.

EFFECT: improved strength of concrete blocks and speed of their hardening.

3 cl, 3 dwg