SU386866A1 - ;} YUNA - Google Patents

Description

t

In the weight method of auth. her. JMb 329151 is sequentially loaded into the mixer with aggregate, into the tandem, additives and water, whereupon the aggregate and the additive, such as water glass, is initially loaded into the mixer and stirred until the grains of the aggregate are uniformly covered with liquid glass, then added to the resulting mass and mixed again until obtaining a free-flowing granular mass, then water is introduced, after which the mass is mixed until a homogeneous mixture is obtained.

In this method, a thin layer of the additive, a material with high adhesion to the components, is formed on the surface of all solid components of the concrete mix, which leads to an increase in the adhesion between the cement and aggregate and, consequently, to an increase in the strength of the finished concrete.

However, for some layer-forming materials, the setting and hardening processes are early interrupted by mixing the mixture, which leads to a decrease in the adhesion strength between the aggregate and the cement.

The purpose of the invention is to increase the adhesion of the filler and the ghost.

This is achieved in that the aggregate with the additive and the portion of the emulsion is maintained after the preliminary mixing prior to solidification of the additive, and then the remaining portion is introduced into the emulsion and water.

A filler is loaded into the mixer, then a layer-forming material, such as water glass, is introduced and mixed before the grains of the filler are wrapped with a uniform film of the layer-forming material, then introduced into a rag, for example, the amount necessary for wrapping the filler and all this is mixed obtain a dry granular mass. The mass thus prepared is discharged and the time required for solidification of the additive is maintained, then the mass is loaded into the mixer, the remaining part is added to the binder and water, after which the mass is mixed until a homogeneous mixture is obtained.

The application of the invention allows to increase the strength of concrete by 10-20%.

Subject invention

The method of preparation of the concrete mixture according to ed. St. No. 329151, characterized in that, in order to increase the adhesion of the filler and the binding agent, the aggregate with the additive and part of the binding agent is maintained after the preliminary mixing prior to solidification of the additive, and then the remaining portion is added to the binding agent and water.