RU2234413C1 - Method of activation of water of a hardening mixture - Google Patents

Abstract

FIELD: construction; activation of components of a concrete mix.

SUBSTANCE: the invention presents a method of activation of water of a hardening mixture and is pertinent to the field of construction, namely to the methods of activation of components of a concrete mix. The invention will allow to reduce time of activation of solidifying mixtures. The method of activation of water of a solidifying mixture provides for an action of the high-voltage electric discharges on the mixtures. The action of the high voltage discharges between the discharge electrodes is exercised on mixing water directly in the feeding pipeline of the batcher of water of the concrete mixing unit by the system of electrodes mounted in the pipeline and connected in parallel in two counter groups.

EFFECT: the invention will allow to reduce time of activation of solidifying mixtures.

2 dwg

Description

The invention relates to the field of construction production, and in particular to methods of activating components of a concrete mixture during preparation on concrete mixing units (BSU), and can be used in all sectors of the national economy for the preparation of various mixtures.

There are various methods of electrophysical activation of a hardening mixture, for example, high-voltage electric discharges (VER) - [1] (Akhverdov I.N. - M .: Stroyizdat, 1981 - 464 pp.).

The disadvantages of these methods is the overexpenditure of electricity due to the local action of electric discharge, the increase in the time of the technological process of preparing the concrete mixture.

There is a method of activating a hardening mixture by exposure to electric discharges between the discharge electrodes placed in the mixture [2] - (USSR Author's Certificate No. 296727, class C 04 V 15/06, 1966).

The disadvantage of this method is that for its implementation it is necessary to expend a large amount of energy (power overrun), due to the production of identical electric discharges, which is not necessary at different times of activation of the hardening mixture.

The prototype of the proposed method is a method of activating a hardening mixture by exposure to electric discharges between the discharge electrodes placed in the mixture. In this case, the potential difference between the measuring electrodes of various materials placed in the moving mixture is continuously changed, and the energy of electric discharges and their frequency are set respectively according to the maximum and minimum values of the measured potential difference [3] - (USSR Author Certificate No. 958377, class C 04 V 15/00, G 01 N 33/38, 09/15/1982 Bull. No. 34.). The prototype solves the problem of reducing energy consumption.

The disadvantages of the prototype are:

- design complexity for the need for a concrete mixer to install additional measuring electrodes, as well as additionally have a potential difference control system and a VER power control system;

- a large preparation time of the mixture, since it is necessary in the difficultly mixed hardening mixture to activate basically all particles of the mixture to activate it, that is, to significantly improve its quality;

- the instability of the action of the electric discharge and the local effect of the discharge;

- the need to change the technology for the preparation of concrete mixtures due to the preliminary preparation of the water-cement mixture and its processing in the activator chamber, which complicates the design of the device and the operation process;

- the impossibility of introducing various chemical additives into the treated water-cement mixture, since under the influence of VER their decomposition occurs.

These disadvantages set the task of simplifying the design (implementing the method), reducing the activation time of the hardening mixture while maintaining and improving the quality of the activated hardening mixture.

Experimental and theoretical studies of the processes of activation of hardening mixtures with the help of VER have established that the main component subjected to activation of VER is mixing water, which changes its electrical resistance with different degrees of activation of the hardening mixture.

To simplify the process of activation, increase the speed of preparation of concrete mixture and improve the quality of the mixture, a method for activating the mixing water of VER is proposed.

The method of activating water of the hardening mixture by exposure to high-voltage electric discharges (VER) between the discharge electrodes, the effect of the VER between the discharge electrodes is carried out on the mixing water directly in the supply pipe of the water mixer of the concrete mixing unit (BSU) with a system of electrodes installed in the pipeline and connected in parallel in two opposite groups .

Activation of mixing water alone is necessary for:

- simplification of the design, since there is no need for a concrete mixer to install additional measuring electrodes, as well as have monitoring systems and a VER power control system;

- short preparation time of the mixture, since the already prepared activated water is supplied to the BSU, in which the hardening mixture is prepared in a known manner for a certain time;

- stability of the action of an electric discharge on all mixing water entering the pipeline into the BSU dispenser;

- keeping the technology for preparing concrete mixtures unchanged, which facilitates the use and implementation of this method in production;

- introduction of various chemical additives into the treated water-cement mixture to give the hardening mixture useful additional properties.

The specified technical result is achieved by activating the VER mixing water directly in the supply pipe of the BSU metering chamber, for example, by means of radial electrodes sequentially mounted along the pipeline along the pipeline and insulated from the pipeline itself. The VER electrode system is included in the pulse current generator (GIT) circuit and has automatic control.

The implementation of the method of activating water of the hardening mixture in combination with the foregoing features (features of the claims) is new for the methods of activation of hardening mixtures and, therefore, meets the criterion of “novelty”.

The above set of distinctive features is unknown at this level of development of technology and does not follow from well-known rules for the implementation of methods of activation of a hardening mixture, which proves compliance with the criterion of "inventive step".

The constructive implementation of the method of activating water of a hardening mixture with the specified set of essential features does not present any structural, technical or technological difficulties, from which the criterion “industrial applicability” follows.

The inventive method is illustrated by drawings, where figure 1 shows a diagram of the activation of mixing water in the pipeline, and figure 2 is a section of a pipeline with an electrode system.

A design that implements the method consists of a supply pipe of a water dispenser 1 filled with water 2, an electrode system of, for example, radially and sequentially located (installed) electrodes 3, connected in two groups by terminals 4. Electrodes 3 are installed in the pipeline 1 through insulating inserts 5 Activated water 2 after the passage of the electrodes 3 enters the supply tank 6 of the water dispenser. To excite the VER on the electrodes 3, there is a GIT (electric discharge installation) 7 with a control system, the poles of which are connected respectively to the terminals 4 of the electrodes 3.

The inventive method is as follows: when the water dispenser is turned on, water 2 is supplied to the pipeline 1, while the electrode system 3 is included in the GIT circuit 7. After that, the treated water is supplied to the supply tank 6.

The activation of mixing water is as follows. When the water dispenser is turned on, the mixing water necessary for mixing is supplied to the supply pipe, at the same time the GIT supplies voltage to the electrodes and high-voltage discharges occur inside the pipeline in the interelectrode gap. After the water dispenser is turned off, the circuit is de-energized, and the activated VER mixing water is discharged into the consumable container, where, if necessary, chemical additives are added.

New in the claimed invention is a method of exposure to mixing water directly in the pipeline with its subsequent introduction into the dispenser. This allows you to increase the efficiency of water activation and makes it possible not to change the technological process of preparation of concrete mix on BSU. The location of the electrode system inside the piping for supplying water to the dispenser allows more efficient processing. The proposed method produces a better and more technologically advanced activation of mixing water without additional equipment of the activator chamber at a lower cost than the known methods. The electrode system located directly in the pipeline allows, without changing the technological cycle and the absence of an additional chamber-activator, to carry out sequential activation of water in a small volume. As a result of this, a significant effect of exposure to high-voltage discharge by force factors on the processes of water dissociation is achieved, thus improving the quality of water treatment and, accordingly, concrete mix. As a result of the application of the proposed method, the efficiency of the electrophysical activation of mixing water is increased, which leads to an improvement in the quality of the concrete mixture.

Sources of information

1. Akhverdov I.N. - M .: Stroyizdat, 1981 - 464 p.

2. USSR copyright certificate No. 296727, cl. From 04 to 15/06, 1966

3. Prototype - USSR copyright certificate No. 958377, class. S 04 B 15/00, G 01 N 33/38, 09/15/1982 Bull. Number 34.

Claims (1)

A method of activating water of a hardening mixture by exposure to high-voltage electric discharges (VER) between discharge electrodes, characterized in that the action of VER between discharge electrodes is carried out on the mixing water directly in the supply pipe of the water mixer of the concrete mixing unit (BSU) with a system of electrodes installed in the pipeline and connected in parallel into two opposite groups.

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