SU551290A1 - Cellular concrete mix - Google Patents

Description

The invention relates to autoclaved concrete mixtures and can be used in the building materials industry. The known concrete mixture is known, including the following ingredients, wt. %: Mineral viscosity19-70 Silica composit 20-76 Emulsion pyrolysis resin1-5 A cellular concrete mixture containing a mineral emulsifying, silica component and a water-repellent additive is also known. As a hydrophobic additive, polyvinyl butyral powder is used in the amount of 0.5-20% of the weight of the mineral in the binder. Closest to the invention by its technical essence and the achieved effect is the first composition. The known cellular concrete mixtures are characterized by insufficiently high hydrophobic properties, which prevents their use in wet conditions. In addition, the addition of myolafta slows down the process of gassing and, consequently, lengthens the technological cycle of production. The aim of the invention is to increase the hydrophobic properties and durability of cellular concrete. This is achieved by the fact that the cheistobeton-mix, which includes the mineral in the tartting, silica component, the blowing agent and the additive, contains, as an additive, an emulsion of fatty tar with the following ratio of ingredients, weight. %: Mineral in a 37: 45 silica component 54.64-62.23 Component O, 06-O, O7 Pore-forming Emulsion fat 0.3-0.7 tar The emulsion fat tar contains the following ingredients, weight. %: Fatty tar 10-20 Sodium phosphate 5-15 Water 70-80 Example. Concrete mixes were prepared as follows.

An emulsion of fatty tar was prepared; for this purpose, the indicated amount of three-mixed sodium phosphate was dissolved in a measured volume of water and fatty tar was injected with stirring. The components were thoroughly mixed for 10-15 minutes. Then, a rate of 0.44 water-solid ratio was poured into the concrete mixer, sand was poured in and fatty tar emulsion was added. The components were thoroughly mixed for 1.5 minutes, mineral was added to the substance and mixed for another 2 minutes, after which aluminum-powder was injected and all the components were mixed for 1.5 minutes,

The molding of samples and their autoclave treatment was carried out in a known manner. For the preparation of cellular concrete, four mixtures of the ingredients of the following compositions were prepared (see, Table 1).

Physico-technical indicators of concrete samples obtained on the basis of these mixtures are given in Table 2.

As can be seen from the table, cellular concrete, obtained on the basis of the proposed mixture, has a higher moisture-proof properties.

The high hydrophobic properties of cellular concrete make it possible to use it in wet conditions of use, for example, in livestock buildings.

Fatty tar emulsion,

I II 111

661 692 717

63O

IV

Table

0.7

0.5

0.3

table 2

27.4 19.4 16.9

Claims (1)

14.6 5 The formula of the invention A cellular concrete mixture, comprising a mineral in a living, silica component, a porogenizing agent and an additive, which is 5 to 5, in order to increase the hydrophobic properties and durability of concrete, it contains 5512 90 6 as an additive. emulsion of fatty tar in the following ratio of ingredients, wt.%: Mineral in the ground37-45 Siliceous component54,64-62,23 Pore-forming 0.06-0.07 Emulsion of fatty tar O, 3 - 0.7