UA17694U - Composition material for producing concrete small-pieces articles by a method of half-dry static, vibration, impact pressing - Google Patents

Abstract

A composition material for producing concrete small-pieces articles by a method of half-dry static, vibration, impact pressing, which mixture containsbinding material, filling agent, pigment, powdered alumosilicate plasticizer and water for preparation of concrete solution.

Description

Description of the invention

The useful model refers to the industry of building materials based on inorganic binders (gypsum, 2 lime, slag and portland cement, liquid glass, etc.) and can be used in construction technology for the production of bricks without firing, blocks and paving stones, in the production of briquettes , as well as when using medium, shallow and fine sands, which were impossible to use during static semi-dry pressing.

There are well-known technologies of ceramic wall materials and products, which are obtained by preparing a mixture of 70 clay and siliceous rocks, industrial waste with organic and mineral additives, forming products by semi-dry pressing. A special place in the production of ceramic bricks is the production of raw materials from clay for semi-dry pressing. Also, to obtain the necessary strength, ceramic products are dried and fired in special ovens | see "Complexes of low productivity for the production of semi-dry pressed ceramic bricks". Catalog - reference book. M. NP VZO "MASHMYR", 1992 | - analogue 12 The disadvantage of the technology of production of ceramic products is the difficulty of preparing pressed powder, which includes drying, grinding, and sorting of raw materials. And this lengthens the duration of the process and increases the cost of ceramic products. And also to reduce the water permeability of ceramic bricks, especially face bricks, and structures made of them, it is necessary to use a water-repellent coating of the walls of these structures, which increases the operating costs for their maintenance.

The closest technical solution to the proposed useful model of composite materials for the production of concrete small products by the method of semi-dry static, vibration, impact pressing is the technology in which the ratio of the initial raw components of the concrete mixture is given

G "Method of production of concrete wall materials" - decision Mo3911/1 on the issuance of a declaratory patent for a utility model dated February 10, 200br. in relation to the application Moy200510777 dated 14.11.2005 4 - prototype.

The technology for the production of concrete wall materials includes operations for the production of concrete in a solution from a mixture consisting of a binder, aggregate, pigment and water, and the formation of products, i.e. bricks, is performed by the method of semi-dry static pressing with a specific force within 15.0. .500kgs/cm 7.

The main disadvantage of concrete semi-dry mixture during static pressing is that these mixtures, having a low water content of the solution (6.0...12.090), are characterized by large values of the internal coefficient of friction between the particles of different materials of the mixture and the external coefficient of friction during pressing in a press. forms (at)

The basis of the useful model is the task of increasing the degree of compaction of the raw material mixture, as well as the density and strength of the hardened composite material by increasing the plasticity of the raw material mixture for the production of concrete products using semi-dry static pressing. -

The task is solved due to the fact that the concrete mixture, which consists of a binder,

From the pigment and water, a powdered aluminosilicate plasticizer is added, and according to the proposed - useful model, the concrete solution from the composite material for the production of concrete products has the ratio of raw components (parts by weight): "

Binder 10.0...25.0

Inert aggregate 65.0...70.0 Z s Plasticizer 2.0...10.0 :z» Pigment up to 3.0

Water 6.0...8.0.

In concrete technologies based on mineralized binders (gypsum, cement), plasticizers are used - (SSB, SDB, LST, etc.), as well as superplasticizers (0-3, SP-3, etc.). However, the effectiveness of these -I plasticizing additives is revealed only with a large water content of the raw concrete mixture.

When the water content of the concrete solution decreases, the plasticizing effect of liquid compounds decreases and is completely ineffective in semi-dry mixtures where the water content is 6.0...3.0905. This is even an introduction

Ge) 20 superplasticizing compounds for concrete solutions do not give the desired result, because with a small amount of water in the process of forming the products, dry friction has a decisive role even with the pressing force in

T» within 300.0...600, Okgs/cm7.

Dry plasticizing powder-like materials (aluminosilicate, lime), which are added to the mixture, contribute to their distribution between aggregate grains and, due to their natural plastic properties, reduce the external coefficient of friction between the material (i.e., semi-dry mixture) and the walls of the mold, as well as reduce the internal coefficient of friction between particles of a semi-dry mixture. The force of static pressing of concrete products from such a mixture is within 50.0...300.Okgs/cm?. At the same time, the degree of compaction increases from 1899...1935 to 2181...2207 kg/m3, and the limit of compressive strength of such a matured material is on average from 780 to 4 BOKgs/cm.

A change in the content of the plasticizer beyond the specified limits leads to a decrease in the effect of plasticization (less than 2.090) or to a decrease in the durability of the product material, especially frost resistance (if more than 10.0905).

In the proposed useful model, aluminosilicate powders were used as plasticizing additives. As an inert aggregate, granulated blast furnace slag, granite sifting from 65 quarries of the Dnieper region, limestone and shelling waste from sawing in the Crimea and Odesa region, screening of limestone - shelling were used as an inert aggregate.

Ordzhonikidzevskiy GZK of Dnipropetrovsk region. -D-

Example

The composite material according to the proposed useful model was prepared by dosing the binding aggregate, pigment and plasticizer, and together with the mixing water, this mixture was processed in a rod mixer until the stage of homogeneous readiness of the concrete solution. In this way of preparing a semi-dry mixture, operations of preliminary drying and grinding of aluminosilicate plasticizer are excluded. With this method of preparing the semi-dry mixture, all its components were thoroughly crushed, and as a result, the plasticizer particles were evenly distributed throughout the volume of the raw material mixture and lubricated the solid components, ensuring the overall necessary plasticization of the composite. 70 After forming this mixture on the AZ 00-31 hydraulic press, a concrete face brick was obtained, and after hardening the products at room temperature, the following results were obtained:

Amount of plasticizer, 95 Strength limit under cross-sectional compression, kgf/cm? July 11111171lovv 208.0. 672

Claims (1)

The formula of the invention Composite material for the production of concrete small products by the method of semi-dry static, vibration, impact pressing, the mixture of which contains a binder, aggregate, pigment and water for the preparation of a concrete solution, which is distinguished by the fact that it contains a powdered aluminosilicate plasticizer, and the concrete solution of the composite material has the ratio of raw components (parts by weight): - binder 10.0...25.0 inert aggregate 65.0...70.0 aluminosilicate plasticizer 2.0...10.0 in pigment up to 3.0 (is) water 6.0...8.0. (Se) . Kk K-4. . . new - Official Bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2006, M 10, 15.10.2006. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. - and? - -i (o) se) "from" 60 b5