SU945122A1 - Concrete mix - Google Patents

Description

The invention relates to building materials, in particular, concrete mixes containing additives that improve the properties of concrete.

Known concrete mix Clli including, wt.:;

Portland cement 11.5-21.5 Filler 70, A-82, Sulphite yeast brew 0.16-0, Nitrite-nitrate-calcium chloride 0.16-0.8 WaterOstal

Closest to the invention to the technical essence and the achieved result is concrete mix 2, comprising, by mas .: Cement 9.2-19.2 Aggregate 72.7-80.1 Sulfite-yeast. chewed mash 0.008-0, OA Calcium nitrate-nitrate-chloride 0.16-0.8

Vat residues of fatty acids 0.008-0.0 Water Else However, concrete prepared from known concrete mixtures has insufficient strength, water resistance and high water absorption.

The purpose of the invention is to increase the strength, water resistance and

10 reduced water absorption of concrete.

The goal is achieved by the fact that a concrete mixture, including cement, aggregate, vat residues of synthetic fatty acids and

15 water, additionally contains polyethylene glycol monoalkylphenyl ether in the following ratio, wt.%:

Cement12.0-19.01

20

Aggregate 69.88-80, i + S Tubal OS-synthetics of fatty acids 0.21-1.52 Monoalkylphenyl ether of polyethylene glycol 0,, 076 Water Remaining Concrete mix is prepared as follows. Heated to vat residues of synthetic fatty ki are mixed with an aqueous solution of polyethyleneglyl-js col mon alkylphenyl ether in a 1: 0.05 ratio. Mix water is added to the resulting mixture and mixed with the remaining component 4 of the concrete mix until a homogeneous mass is obtained. Specific examples of the implementation are shown in Table 1. Physico-mechanical properties of concrete samples prepared from the proposed and known concrete mixtures are given in Table 2. Products made from the proposed concrete mixture are characterized by increased durability and corrosion resistance, which is of particular importance for underground structures operating in aggressive environments that are characterized by periodicity of action, such as freezing and thawing, wetting and drying. Table 1

6.5

18.0

, Uh

26,6

one

table 2

25.0

82

itO, 0

Bi4

Claims (2)

1. Rosenberg T.I. et al. Mechanism of the Effect of Electrolyte Additives on the Structure of Cement Stone and Concrete Properties. - Concrete and Reinforced Concrete, 1977, No. 7, p. 10-12. 2. USSR author's certificate number b795 6, cl. C Oi B 13 / 2i, 1978.