SU1294623A1 - Method of placing concrete mix - Google Patents

Abstract

The invention relates to the manufacture of building products from concrete mixtures. The purpose of the invention is to increase productivity. In the hopper load concrete mix. Compressed air is fed into the cavities of the two opposite walls, as a result of which the mixture is compressed with a reduction ratio of 0.003-0.04 with a difference in the compression forces in the mutual directions of 0.05-0.3 kg / cm. Then, through 0.06-1 s, compressed air is fed into the cavities of two adjacent opposite walls and the mixture is compressed in the reciprocal direction with the same parameters. The successive change in the direction of air supply through 0.06 to 1.0 s leads to a periodic compression of the mixture in mutually perpendicular directions and an increase in the flow rate with a uniform degree of compaction of the mixture at the exit of the bunker into the mold. 1 tab., 2 Il. about “O5

Description

The invention relates to the manufacture of building products from concrete mixtures, in particular to the processes of laying concrete mixture into a mold.

The purpose of the invention is a performance improvement.

FIG. 1 shows a device for performing the method; in fig. 2 is a section A-A in FIG. one.

The method is performed as follows.

the position of the particles of the mixture between themselves and the accelerated displacement of air from the mixture, therefore, accelerated compaction of the mixture, i.e. productivity increase .

Under the action of vertical gravitational forces, a vertical compression of the mixture occurs, and the difference in horizontal pressures in the mixture in mutually perpendicular directions, i.e. by main

In the bunker 1 load concrete mix 2, W vectors, creates a force in the range of 0.05-

while the front part 3 of the form 4, mounted on the rollers 5, is combined with the movable wall 6. When loading the mixture into the hopper into the cavity 7, compressed air is supplied through the clamp 8, compressed air is applied to the wall 0, 3 kgc / cm, and counting the amount of displacement of the walls 9 and 10 is carried out in the range of 0.003-0.04. In such a volumetric reduction, the concrete mixture is displaced into the form 4 and fills it, forming from Air 9 and 10 under pressure of air, which is smoothed and displaced towards each other (Fig. A) from cavities 11 and 12 formed by walls b and 13 and the housing 14, through the coupling 15, a damping reset is made

volume 19 with continuous movement of form 4 from right to left. Elastic liners 20 divide the cavities between themselves and provide wall mobility, and air slides 21. Under the forces of walls 9 and 10, the directional movement of the walls is preserved, the tonne mixture is compressed, as a result of which, after 0.06-1 s, internal stresses are generated in the mixture in a mutually perpendicular direction, the main vectors 16 and 17 which fittings 15 supply compressed air to the bands in mutually perpendicular directions 11 and 12, and through fittings 8 in direction. According to the theory of elasticity and the plane t, the damping air discharge from the sub- nality due to the internal friction forces of the 7 holes 7, while the walls 6 and 13 of the converters 17 of the main stresses are less pronounced, and the walls 9 and 10 below 16, as a result of which the concrete mixture of internal stresses in the concrete and the mixture in the direction of the vectors 16 is compressed, and in the direction of the vectors 17 it moves apart with resistance, acting on the walls 6 and 13, which, under the damping pressure 30 of the remaining compressed air, into the cavity x 11 and 12 create pressure in the mixture. Since the pressure forces on the mixture from walls 6 and 13 are less by 0.05-0.3 kgf / cm than the pressure from walls 9 and 10, the walls 6 and. . „....

13 are moved apart, while in terms of shifts, which accelerates the speed of compaction of the mixture particles in the whole volume with a uniform degree

perpendicular directions in accordance with the force of gravity vector with the direction of the main vectors 16

and 17, which contributes to the favorable spread of Dena in the table.

elastically moving apart, displacing air from cavities 7, whose pressure due to damping is less than in cavities 11 and 12. Thus, with continuous change in the direction of air flow through 0.06-1 s, the mixture is sequentially compressed into mutually perpendicular directions with displacement, particles of the mixture are also mutually perpendicular to the direction of compaction of the mixture when it leaves the bunker in the form.

Examples of the implementation method, 07

About 0025

0.07

0.025

the position of the particles of the mixture between themselves and the accelerated displacement of air from the mixture, therefore, accelerated compaction of the mixture, i.e. productivity increase .

Under the action of vertical gravitational forces, a vertical compression of the mixture occurs, and the difference in horizontal pressures in the mixture in mutually perpendicular directions, i.e. by main

vectors, creates forces in the range of 0.05

0.3 kgc / cm, and the degree of reduction due to the magnitude of the displacement of the walls 9 and 10 is carried out in the range of 0.003-0.04. In such a volumetric reduction, the concrete mixture is forced into the mold 4 and fills it, forming the product 18, which is smoothed by the sheet 19 with the continuous movement of the mold 4 from right to left. Elastic inserts 20 divide the cavities between themselves and provide the mobility of the walls, and the sliders 21 provide directional movement of the walls. After 0.06-1 s, the process is performed in a mutually perpendicular direction, fitting 15 is supplied with compressed air in bands 11 and 12, and through fittings 8, a damping air discharge from cavities 7 is produced, walls 6 and 13 converging, and walls 9 and 10 under the action of internal stresses in the concrete and the mixture. . „....

 It accelerates the rate of compaction throughout the volume with a uniform degree

elastically moving apart, displacing air from cavities 7, whose pressure due to damping is less than in cavities 11 and 12. Thus, with continuous change in the direction of air flow through 0.06-1 s, the mixture is sequentially compressed into mutually perpendicular displaced particles are also displaced along mutually perpendicular directions, which accelerates the rate of compaction throughout the volume with a uniform degree

compaction of the mixture at its exit from the hopper into the mold.

Examples of how to implement the method

9.0

Relative displacement of aggregates was not observed. Unsatisfactory

The particles of the mixture do not always shift. Unsatisfactory

mixes. Unsatisfactory

9 1.02 0.01 0.1 9.2 Particles of some

zones are not shifted. Unsatisfactory

10 0.05 0.04 0.1 11.5 Not a degree of reduction due to the small time

Note. Laying time of 1 m of concrete mix in a known manner

is 11-12.5 min.

Claims (1)

- Claims of the invention by successive mutually perpendicular | Jis compressive forces in the horizon. The method of laying the concrete mixture from the bunal plane with the degree of compression ker in the form by the expiration under the force-0,003-0,04 and the difference in the effort of reduction in exposure, a different heme, which is perpendicular directions the purpose of increasing productivity, force-0.05-0.3 kgc / cm with a change in direction The effect on the mixture is carried out every 0.06-1 s. Table continuation reset ffffJ l / x  ////// TTL 75 ( W V /  Zo