FIELD: construction.
SUBSTANCE: method for strengthening treatment of concrete products includes exposure of alternating rotary magnetic field with specified value of its intensity and frequency at components used in composition of initial concrete mix, when exposure of alternating rotary magnetic field is provided for all components making concrete without exception after their combination into integral volume directly in the product item itself after realisation of initial mixture components curing operation. This exposure is realised in moulded product without its extraction from used curb. The item itself performs function of closing connecting link in magnetic circuit used for generation of field. Treatment is carried out at intensity of alternating magnetic field 1×104-3×106 a/m; range of its frequencies 20-70 Hz for 1.5-4.5 hours. Cycles of treatment are repeated twice: in 160-180 hours with a delay of 0.3-0.7 hr and in 480-500 hours with a delay of 0.1-0.2 hour. Device used to realise the method comprises circuit developing alternating magnetic field and electric windings-coils mounted on it and connected to external source of AC current supply. One of plates making magnetic conducting circuit has through slot, dimensions of which make it possible to install the concrete product itself in it together with curb used for its moulding, and its body when installed in circuit serves as closing connecting link that closes magnetic flow generated in it.
EFFECT: improved strength characteristics used to erect objects of concrete building structures.
2 cl, 2 dwg, 3 ex
