SU814936A1 - Concrete mix and its production method - Google Patents

Description

(54) CONCRETE MIXTURE AND METHOD FOR ITS PREPARATION

the mixture after 2-3 m from the beginning of enticing the remaining components.

The acid tar rectification is a waste from the coke production and is formed by the reaction of crude benzene with sulfuric acid to purify it. As a result of the interaction of acid tar and sodium carbonate; sodium salts of alkyl aryl sulfonic acids, sodium sulfate are formed, and an excess of sodium carbonate increases the alkalinity of the neutralization product medium.

Slag Portland cement with a slag content of 40–50% is used as a mineral in the binder.

Concrete mixes of the proposed and known compositions, as well as the properties of the resulting concrete samples are given in table. 1 and 2.

Table 1

Neutralization product 0.304 0.191 acid tar 6/471 6.674 12.0 12.0 11.5 Mobility, Cm 11.0 Concrete compressive strength, MPa /%: samples steamed at 19.5 16.6 16.6 18.9 mode 135115 131 2 + 2 + 6 + 2Ч

11.8

8.2 144 100

27.6

21.1 131 100

T a

faces

12.0 10.8 11.7

11L 11.9

11.2 143 145 146 132 143 137

24j; Q 27.4 28.0 29.1

Claims (3)

29.5 27.2 28.7 113 I29 132 138 140 129 136 0.12 0.154 0.204 0.304 0.154 0.154 6.655 6.611 6.571 6.471 6.621 6.621 12.0 11.0 12.0 11.5 12.5 19.9 20.2 20.6 20.6 138 140143 124 140 The proposed device allows to obtain concrete with higher strength indicators and provides for the disposal of waste that pollutes the environment. Claims 1. Concrete mix, including mineral in the sticking, small and coarse aggregate, sulphite-yeast brig and water, characterized in that, in order to increase the strength of concrete, it contains an additional product of neutralizing sodium carbonate with ACID tar of raw benzene , and as a mineral in a slag cement Portland cement in the following ratio of components, wt.%: Slag Portland cement 10-16 Fine aggregate 35-47 Large aggregate 35-40 Sulfite-yeast mash 0.02-0.25 Carbo neutralization product sodium sodium acid tar rectification of raw benzene, 12-0, 304 Water Residual, 2. The method of preparation of the concrete mix according to claim 1, which consists in mixing small and large aggregate, sulphite yeast brew and water, characterized by the fact that the product is neutron carbonate Sodium tar rectification of old benzene is introduced into the concrete mix after 2-3 minutes from the beginning of mixing the other components. Sources of information taken into account when examining 1. The author's certificate of the USSR 494363, cl. From 04 To 15/02, 1974. 2. Guidelines for the application of chemical additives to concrete NIIZHB, M, SI, 1975, p.47,49. 3. Sorrker V.I. Plasticized concretes and solutions M, SI, 1953, pp. 154-155.