SU718830A1 - Concrete mixture - Google Patents

Description

(54) CONCRETE. MIXTURE

The invention relates to compositions of concrete mixtures containing additives that modify the properties of concrete. A concrete mix is known, including cement, aggregate, water, and a bitumen emulsion. Closest to the invention of the technical nature and the achieved result is a concrete mix, including Portland cement, aggregate, sulphite-yeast mash, 1-bit residues of synthetic fatty acids and water. The ratio between sulphite-yeast brew and bottoms of synthetic fatty acids is 1: 1. The disadvantage of the known mixture of VL -. low waterproof performance. The purpose of the invention is to increase the water resistance of the concrete mix. This is achieved by the fact that a concrete mixture, including Portland cement, aggregate, sulphite-yeast fermentation, vat residues of synthetic fatty acids and water, additionally contains a bitumen emulsion, in the following ratio of components, wt.% But dyfifi p ri for 16 , 6-20.3 Portland cement 69,33-74,32 Aggregate of Sulphite-drozhjev 0.01-0.025 beer Vat residues of synthetic fatty 0.01-0.025 acids Bitumen 0.66-1.21 emulsion Remaining Water Bitumen emulsion contains, wt% : Bitumen56-57 Sulphite yeast barazhka3-4 WaterElite Pre Prepare a hydrophoblastizing additive by pergiving the bottoms of tetic fatty acids and the sunshine yeast brew, as well as a smart emulsion by emulsifying bitumen with an introductory solution of the wet yeast brew. , The withdrawn quantities of treated additives are introduced into the water of the seals.

The resulting aqueous solution of the additive, mixed, is mixed in a concrete mixer with yOrtdAnCement AND aggregate until a homogeneous mass is obtained.

The resulting concrete has a water resistance of 2-3 times higher compared to concrete containing only sulphite-yeast mash and bottoms of synthetic fatty acids.

In addition, the proposed blend with additives makes it possible to obtain products of increased strength due to a 5–7% decrease in the water-cement ratio as compared with the concrete mixture - the prototype, while maintaining the mixture with a given mobility. Products on the basis of the described composition are characterized by increased durability and corrosion resistance, which is of particular importance in the manufacture of reinforced concrete pressure pipes and non-pressure pipes, since sewage, production and other waters that are aggressive to concrete can be transported through pipelines. For example, concretes with the proposed additive are characterized by 1.2-1.45 times greater compressive strength and 1.5-1.6 times lower water absorption compared with the prototype.

The proposed concrete composition allows to reduce the specific cement consumption, reduce the product thickness by 15-16%, and increase labor productivity.

In tab. 1 shows the specific formulations of the proposed concrete mix, and table. 2 - properties of concrete products derived from them.

Table 1

8.48, 745 9.11 9.575

Table 2

Claims (1)

<claim-text> Formula of the invention </ claim-text> </ td> <td> </ td> <td colspan = "2"> <claim-text> Vat residue - </ claim-text> </ td> </ tr> <tr> <td> <claim-text> _______ 1. Concrete mix </ claim-text> </ td> <td colspan = "2"> <claim-text>, including </ claim-text> </ td> <td colspan = "2"> <claim-text> synthetics - </ claim-text> </ td> </ tr> <tr> <td colspan = "3"> <claim-text> portland cement, aggregate, 'sul-50 </ claim-text> </ td> <td> <claim-text> fats </ claim-text> </ td> <td> </ td> </ tr> <tr> <td colspan = "3"> <claim-text> light yeast brew, vat </ claim-text> </ td> <td> <claim-text> acids </ claim-text> </ td> <td> <claim-text>. 0.01-0.025 </ claim-text> </ td> </ tr> </ table> <claim-text> residues of synthetic fatty acids and water, distinguished by the fact that, in order to improve water resistance, it additionally contains a bitumen emulsion in the following ratio of components, weight. . </ claim-text> <claim-text> Bituminous emulsion Water </ claim-text> <claim-text> 55 </ claim-text> <claim-text> Portland cement </ claim-text> <claim-text> Placeholder </ claim-text> <claim-text> Sulfite yeast </ claim-text> <claim-text> mash </ claim-text> <claim-text> 16.6-20.3 </ claim-text> <claim-text> 69,33-74,32 </ claim-text> <claim-text> 0.01-0.025 </ claim-text>