US 8,696,190 B2Granted

Method and apparatus for preparing and inertial placing with compacting a concrete mix

AssigneeZaktritoe Akzionernoe Obschestvo ''Nauchno-Proektnoe Proizvodstvenno-Stroitelnoe Ob'edinenie “Grandstroi”

InventorsGamlet Gurgenovich Arakelyan, Artur Gamletjvich Arakelyan, Grant Gamletjvich Arakelyan

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Abstract

The invention relates to methods and apparatus for a vibration-free placement of the concrete and for placement and enforced speed inertial compaction of the concrete under a high pressure. The method permits to optimize the values of the compaction factor of the concrete mix being placed without vibration. Whereupon, in the case of variation assigning and implementing (adjusting and optimizing) the integral indices of the mix, and/or the plume modes, and/or the space medium characteristics, increasing the concrete strength in early time of the concrete curing, increasing the width of the placed and compacted mix in one step of concreting, reducing the mix losses in the case of placing with compacting the concrete mix. The method implements a stage of concreting under super-high pressure using a speed force inertial characteristic of components, wherein the steps are joined into the continuous serial process of the steps of: preparing the mix, unloading and transporting thereof, reconstructing the stream, discharging the mix stream for placing with compacting thereof, particularly by means of stabilizing the uniformity of the concrete mix. The apparatus is designed for implementing the method.

Claims12

Dependent claims

A method for preparing and inertial placing with compacting a concrete mix in a vibration-free placement of concrete, which method comprising stages of:

concreting under super-high pressure using a speed force inertial characteristic of components
which stage being carried out by steps of:
cyclical forced preparing the mix in a mixing chamber,
transporting the mix via a pipe-line,
discharging in a stream for placing with compacting by means of sputtering the stream by a plume of inertial displacing the concrete mix in space taking into account a plume position and shape,
wherein the steps in the stage of concreting under super-high pressure using a speed force inertial characteristic of components are joined into the continuous serial process of the steps of:
preparing the mix, unloading and transporting thereof, reconstructing the stream, discharging the mix stream for placing with compacting thereof,
the step of enforced cyclic preparing the mix in the mixing chamber being performed by means of stirring along with a combined movement of the components in the mixing chamber with a possibility for preparation the mix for uniform unloading,
the step of unloading the mix from the chamber being performed by means of ejecting which is combined with a change of a combined stirring mode,
the step of transporting the mix via the pipe-line being carried out in form of an air pulp having an average density of 5 to 50 kg/m3 in a turbulent movement mode;
the step of reconstructing the mix stream being transported,
prior to discharging the mix stream for placing and compacting thereof, being performed by means of shaping a complex form of the stream with restraining the stream on the surface thereof with by second-order plane at a discharging velocity of 200 to 500 m/sec,
the step of discharging being carried out using speed force inertial characteristics of the components of the reconstructed stream for placing with compacting by means of sputtering the stream with the plume of an inertial displacement of the concrete mix in the space taking into account the plume position and shape, with a possibility for adjusting and optimizing the compaction factor of the concrete mix with respect to complex indices of mix parameters, and/or plume modes, and/or space medium characteristics.

10 more elements

An apparatus for preparing and inertial placing with compacting the concrete mix in the vibration-free concreting, which apparatus comprising:

an enforced action mixing chamber in the form of a horizontal cylindrical reservoir for stirring having a pressure inlet, a loading port, and an unloading mechanism in a bottom portion,
a pneumatic transport system in the form of a pipe-line, and
a discharging device for placing and compacting the mix,
in the mixing chamber being mounted a central working shaft with a drive, blades each of which being mounted at an angle between a plane thereof in a vertical position and a shaft axis at free ends of holders,
the holders being fixed to the central working shaft perpendicularly to a horizontal axis thereof, configured for moving the holders along the axis,
an unloading mechanism in the bottom portion of the mixing chamber being made in the form of a chamber with an ejecting device in the form of an ejector nozzle and ejector diffuser coupled to the pneumatic transport pipe-line, at which output a discharging device being disposed for placing and compacting the mix, which discharging device being made in the form of a placing nozzle, wherein:
the apparatus being made in the form of a unified hermetically sealed system having a boost energy source,
the drive of the central working shaft being configured reversible for adjusting the speed,
the blades on the holders being configured for changing the angle and mounted at an angle, and
the holders being spaced at a distance ensuring jointly the blade overlap in the horizontal cross-section of the mixing chamber,
a geometry and configuration of the pneumatic transport being made on a basis of a turbulent mix displacement,
the discharging device for placing and compacting the mix in the form of the placing nozzle for shaping plume modes is made in a special complex configuration having a second-order guide surface convex inward the nozzle and the diffuser.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/655,012Filed 22 Dec 2009
Priority: RU 200815152325 Dec 2008
Published: US 2010/0165783 A11 Jul 2010
Granted: 15 Apr 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B28C 5/123
Discontinuously operating mixing devices, e.g. with consecutive containers: with pressure or suction means for discharging
B01F 27/70
With stirrers rotating about a horizontal or inclined axis: with paddles, blades or arms
B01F 33/502
Movable or transportable mixing devices or plants: vehicle-mounted mixing devices
E04F 21/10
Mechanical implements: centrifugally acting