SU718401A1 - Concrete mixture - Google Patents

Description

(54) CONCRETE MIXTURE

The invention relates to compositions of concrete mixtures containing modifying additives. A mixture is known, including cement aggregate, water and potassium nitrate additive ij. Closest to the invention of the technical nature and the achieved result is a concrete mixture, including a portland cement, crushed stone, sand, potassium nitrate, sulfite-spun bard and water. Concrete products obtained from such a mixture are characterized by increased strength. A disadvantage of the known solution is the high frost resistance of the obtained products. The purpose of the invention is to increase the resistance to frost. This is achieved by the fact that the concrete mixture, including Portland cement, crushed stone, sand, nitric potassium, plasticizer and water, contains, as plasticizer1) salt of salicylic acid in the following ratio of components, weight.%: Portland cement 16-17 Crushed stone 5O-51 24 -25 Potassium nitrate 0, O1-0, OO8. Sodium salt Sali0,022-0.21 of cyclic acid Else The method for preparing a concrete mix is in the usual mixing of the components. Examples of three skh) of the proposed concrete mix and the three compositions of the concrete mixture according to the prototype of the lords in the table, 1, and their properties in table. 2

„I ..

1ie.9b50.64 24.176 7.99 0.034

216.96 50.84 24.176 7.99 0.034

3 16.96 50.84 24.175 7.94 0.085

.4 16.9650.84 24.175 7.94 0.085

5 17.00 50.97 24.247 7.57 0.213

6 i7, OO S0.97 24.247 7.57 O, 213

unit: YJY55Y 5i-S .- sii-i-s-s -t:

 6Tj-Ja -% - i ... v i-j - L ----.- -.

7; 1Ж01

T a b l and c a 1

Sodium salipilate 96.5; Kaliyev saltpeter 3.5 PRS 96.5;

Kaliyev saltpeter

3,5 Salicylate sodium

85.0;

Kaliyev saltpeter 15, -.

PRS 85.0;

Kaliyev saltpeter 15

Saliumylate sodium, / 75; Kali eva saltpeter 25

PRS 75;

Kaliyev saltpeter

25

Formula

the invention

Concrete mix, including irdpwatlacement, crushed stone, sand, nitrous acid, plasticizer and water, characterized in that, with the aim of ib-. Higher frost resistance, it contains as a plasticizer salicylic acid sodium salt in the right ratio of components, wt.%:

Portland Cement 16-17

Crushed stone O-51.

 Sand.24-25

NITROGENIC KALIUM O, O1-O, OO8 Sodium salt of salicylic acid0,022-0,21 Water Rest

Sources of information taken into account in the examination

1. David M. M. Nova’s dream Concrete technologists in the winter. L., 1966, p. 140,

2. Babachev, G., et al. The Effect of Complex Chemical Additives on the Properties of Concrete, - Building, 1971, No. 2,

with. 8-14 (b).

Claims (2)

Claim A concrete mixture including Portland cement, crushed stone, sand, potassium nitrate, a plasticizer and water, which differs in that, in order to. to increase frost resistance, it contains as a plasticizer sodium salt of salicylic acid, the ratio of components Portland cement Crushed stone And Sand at the following wt.%: 16-17 50-51 24-25 Cadmium nitrate 0.01-0.008 Sodium salt of salicylic acid 0.022-0.21 Water Else, Sources of information taken into account in the examination 1. Davidson MG New technology of concrete work in the winter, L., 1966, p. 140. 2. Babachev G. et al. The influence of complex chemical additives on the properties of concrete, - Construction, 1971, No. 2, from. 8-14 (bulg.).