UA23459U - Method for production of raw mix for foamed concrete - Google Patents

Abstract

A method for production of raw mix for foamed concrete comprises dosage and mixing of binding and filling agents. Granulated blast-furnace slag with gradation factor of 3 is used as a filling agent. Binding agent and granulated blast-furnace slag are measured out in certain ratio between them, followed by the grinding of them to gradation factor of 0.14-1.00 mm.

Description

Description of the invention

A useful model belongs to the production of construction materials, namely, aerated concrete. 2 A known method of production of foam concrete from cement, foaming agent and sand (GOST 21520-89 "Blocks from cellular concrete wall small".

The closest to the claimed method is the method of production of raw material mixture for foam concrete, which includes dosing and mixing of binder and aggregate (patent of the Russian Federation Mo2077521, IPC СО4840/001. At the same time, an ash-slag mixture is used as an aggregate. 70 The disadvantage of known methods is insufficient strength of the foam concrete obtained from the raw mixture.

The task facing the authors is to create a method of production of raw material mixture for foam concrete, which would allow to ensure the set of sufficient strength of foam concrete obtained from the raw material mixture, gave the opportunity to select the optimal granulometric composition, as well as to maximally use metallurgical slag in the mixture, including blast furnace slag 12 The problem is solved by the fact that in the method of production of raw material mixture for foam concrete, which includes dosing and mixing of binder and aggregate, according to a useful model, granulated blast furnace slag with a particle size modulus of 4.3 is used as an aggregate, and the binder and granulated blast furnace slag they are dosed in a certain ratio between them, and then they are ground to a grain size module of 0.14-1.00 mm. At the same time, granulated blast furnace slag with a particle size modulus of 23 and a binder is in the raw material mixture in the following ratio, 95 mass: granular blast furnace slag with a particle size module of З - 40-50; astringent - 50-60. In addition, as a binder, cement and granulated blast furnace slag with a grinding fineness of 5-20965 are used together, and granulated blast furnace slag with a coarseness modulus of 5.3, granulated blast furnace slag with a grinding fineness of 5-20956 and cement are in the mixture in the following ratio , 96 mass: granulated blast furnace slag with a size modulus of 4 3 - 40-5095; granulated 29 blast furnace slag with a fineness of grinding 5-2095 - 25-30905; cement is another. with

In more detail, the essence of the useful model is explained on examples of the implementation of the method with reference to the drawing, where Fig. 1 shows a technological scheme for the production of raw material mixture for foam concrete (without the use of granulated blast furnace slag with a grinding fineness of 5-20965); Fig. 2 is a technological scheme for the production of raw material mixture for foam concrete (using granulated blast furnace slag with a fineness of grinding 5-209b5). yu

The production of the raw mixture for foam concrete using only cement as a binder (Fig. 1) is carried out in the following way. in

Cement is fed into hopper 1, and granulated blast furnace slag with a granularity modulus of 43 is fed into hopper 2. Dosing of granulated blast furnace slag with a granularity modulus of 4.3 and cement is carried out by two screw dispensers Z and

And according to the adjustable number of revolutions to obtain the desired percentage ratio between the components in the raw material mixture, 96 mass: granulated blast furnace slag with a particle size modulus of 23 - 40-50; cement - 50-60.

Screw dispensers C and 4 feed slag and cement into the rod mill-mixer 5, in which they are mixed. At the same time, they are additionally ground to a module size of 0.14-1.00 mm, due to which Z 50 activates the components. From the mixing mill 5, the resulting mixture enters the inclined conveyor 6 and further into the output hopper of the foam concrete mixing plant 7.

From" The production of raw material mixture for foam concrete using finely ground granulated slag (Fig. 2) is carried out in the following way.

Cement is fed into hopper 1, granulated blast furnace slag with a grinding fineness of 5-20905 is fed into hopper 2, and granulated blast furnace slag with a coarseness modulus of 23 is fed into hopper C. Dosage of granulated blast furnace slag with a coarseness modulus of 3 and cement is carried out by three screw dispensers 4. 5 and 6, respectively, with an adjustable number of revolutions to obtain the desired percentage ratio between the components in the raw mixture, 95 mass: granulated blast furnace slag with a grain size module A3 - 40-50; granulated blast furnace slag with a grinding fineness of 5-20905 - 25-3090; cement is another. sl 20 Screw dispensers feed all the components of the mixture into the rod mill-mixer 7, in which they are mixed. At the same time, they are additionally ground to a grain size of 0.14-1.00 mm, due to which the components are activated. From the rod mill-mixer 7, the resulting mixture enters the inclined conveyor 8 and further into the output hopper of the foam concrete mixing plant 9.

In the conditions of the building materials section of OJSC "MMK named after Ilyich", the proposed method was experimentally tested for the production of D800 foam concrete with the following ratio of components in the mixture, 90 s mass: granulated blast furnace slag with a particle size modulus of 23 - 45.0; cement - 55.0.

Tests have shown that the final result of the set strength of concrete of this composition after 14 days corresponds to the specified.

The proposed method of raw material mixture production allows the production of foam concrete and foam blocks of high 60 grades due to the introduction of granulated blast furnace slag into their composition instead of sand, and also makes it possible to select the optimal granulometric composition. Due to the use of blast furnace slag, the consumption of cement and sand is reduced, which reduces the cost of the finished products. In addition, disposal of blast furnace slag significantly improves the ecological situation. b5

Claims (4)

The formula of the invention 1. The method of production of raw material mixture for foam concrete, which includes dosing and mixing of binder and aggregate, which is characterized by the fact that granulated blast furnace slag with a granularity modulus of 2.3 is used as an aggregate, and the binder and granulated blast furnace slag are dosed in a certain ratio between them , and then grind them to a particle size of 0.14-1.00 mm. 2. The method according to claim 1, which differs in that granulated blast furnace slag with a grain modulus of 2 З and a binder are used in the raw material mixture in the following ratio, by mass: granulated blast furnace slag with a grain modulus of 2.3 40-50 binder 50 -60. Q. The method according to claim 1, which differs in that cement and granulated blast furnace slag with a grinding fineness of 5-20 95 are used together as a binder. 4. The method according to claims 1, 2, 3, which differs in that granulated blast furnace slag with a particle size modulus of 2 3, 75 granulated blast furnace slag with a grinding fineness of 5-20 95 and cement are used in the mixture in the following ratio, 95 wt.: granular blast furnace slag with a particle size module of 2.3 40-50 granulated blast furnace slag with a grinding fineness of 5-20 95 25-30 cement, the rest. that 2 (o) IF) « (ze) p - and? ime) (95) sh» 1 iChe) 60 b5