SU1350143A1 - Concrete mix - Google Patents

Abstract

The invention relates to the production of building materials, to the compositions of concrete mixtures. The aim of the invention is to increase the plasticity of the concrete mixture, strength and water resistance of concrete. The concrete mixture contains, wt%: cement 9-13; sand 27-30, crushed stone 48-57, sodium carboxylmethylcellulose 0.0475-0.45, lystilenimine 0.0025-0.05, monoalkylphenyl ether polyethylene glycol 0.05-0.15, water the rest. The concrete mix is characterized by plasticity up to 8-11 cm, the resulting concrete has a water resistance of 0.6-1.2 MPa, strength 16-21 MPa. 2 tab. with

Description

113

The invention relates to the building materials industry, in particular to the composition of concrete mixtures.

The aim of the invention is to increase the plasticity of the mixture and the strength and water resistance of concrete.

Concrete mix prepared in the traditional way. An additive from a mixture of sodium carboxymethylcellulose, polyethylenimine and polyethylene glycol monoalkylphenyl ether is introduced as a solution with mixing water.

The specific compositions of the concrete mixture on which the tests were carried out are given in Table. one.

Determination of the mobility of the concrete mixture, as well as the strength and water resistance of concrete, is carried out according to standard methods.

The results of the experiments are given in table. 2

Cement Sand

Rubble

Plasticizing additive based on sodium salts of amino acid protein

four

Sodium carboxymethyl cellulose

Polye Teal Yenimine

Monoalkylphenyl ether of polyethylene glyco

Water

43 Formula

the invention

five

The concrete mixture, including cement, sand, crushed stone, the addition of an amine containing compound and water, is characterized in that, in order to improve its plasticity, as well as the strength and water resistance of concrete, it contains polyethyleneimine and, additionally, sodium carboxymethyl cellulose lulose and monoalkylphenyl ether of lysylenglycol in the following ratio, wt.%:

Cement9-13

Sand27-30

Rubble48-57

Polystilenim 0.0025-0.05 Sodium carboxymethylcellulose 0.0475-0.45 Monoalkylphenyl ether polyethylene glycol 0.05-0.15 Water Else

Table I

0,0475 0,380,450,2250,2480,250, 0025 0,020,050,0250,026-0.025

0.05 0.120.150.08-0.10.15

6.9 7,488,358,677,7267,657,825

Draft cone, cm

Waterproof, MPa

Compressive strength, MPa

eight

II 11

10 8

0.2 0.4 0.8 1.2 0.8 1.0 0.8 0.8 0.6 0.6

but

13.2 12.5 17.3 21 15.8 18.9 19.5 17.1 16

/Table. 2

eight

II 11

10 8

Claims (1)

Claim A concrete mixture including cement, sand, gravel, an additive of an amine-containing compound and water, characterized in that, in order to increase its plasticity, as well as the strength and water resistance of concrete, it contains polyethyleneimine and additional sodium carboxylmethyl cellulose and polyethylene glycol monoalkylphenyl ether in the following the ratio of components, wt.%: Cement 9-13 Sand 27-30 Crushed stone 48-57 Polyethyleneimine 0.0025-0.05 Sodium carboxylme- cellulose 0.0475-0.45 Monoalkylphenyl polyethylene ether glycol 0.05-0.15 Water Rest Table 1 Crushed stone Protein Amino Acids Plasticizing Agent 0.2 " Sodium carboxymethyl cellulose 0.0475 0.38 0.45 0.225 0.248 0.25 By lee til enimin 0.0025 0.02 0.05 0,025 0,026 0,025 Polyethylene glycol monoalkylphenyl ether 0.05 0.12 0.15 0.08 0.1 0.15 Water 8.3 8.8 6.9 7.48 8.35 8.67 7,726 7.65 7,825 Indicators for the compositions / table. 2 Parameters Control Famous 1 2 3 4 5 6 7 Cone draft, cm 2 7 8 eleven eleven 10 8 9 9 Water resistant MPa 0.2 0.4 0.8 1,2 0.8 1,0 0.8 0.6 0.6 The limit of compressive strength, MPa 13,2 12.5 17.3 21 15.8 18.9 19.5 17.1 16