METHOD FOR CONTINUOUS TREATMENT OF CONCRETE MIXES Russian patent published in 1999 - IPC

FIELD: construction engineering. SUBSTANCE: device is intended for treating concrete mixes prior to placing them into form or shuttering in production of sectional concrete structures or in erection of cast-in-place concrete structures. Device has charging bin and heating chamber adjacent to charging bin. Heating chamber is vertical and adjoins charging bin in resilient and hermetic manner. Secured externally on body of heating chamber are vibrator and discharge spout. Fastened on internal electrically insulated surface of heating chamber are electrodes which are connected to three-phase alternating current supply network. Electrodes are rectilinear and are of triangular configuration in their cross-section. Sum of internal angles of electrode peaks facing towards center is equal to 360 deg. Adjacent faces of neighboring electrodes are parallel to each other. Discharge spout which functions as adjustable gate is made in the form of round fitting. Internal diameter of discharge spout corresponds to internal diameter of heating chamber. Lower end of discharge spout is limited by two planes which are symmetrical relative to central horizontal axis. Planes are inclined to vertical line at angle not over 45 deg. Seated between these two planes are movable shutters sliding along guide members. Device is easy to manufacture and operate. It affords wide range of productive capacity and of concrete mix heating temperature. EFFECT: higher efficiency. 3 cl, 5 dwg