SU709587A1 - Concrete mixture - Google Patents

Description

The invention relates to the composition of concrete mixtures and can be used for plugging the walls of deep oil wells, as well as for heat treatment of concrete, reinforced concrete products and preventing premature concrete setting. A known concrete mixture comprising a mineral in a hibernation and a hardening inhibitor - gypsum 1. Closest to the invention according to its technical essence and the achieved result is a concrete mixture comprising a mineral sticking aggregate, an additive of green liquor containing NaOH, Na, S, in the amount of 1-2% by weight of the mineral in the binder, and water 2. However, these additives have an insufficient retarding effect. The purpose of the invention is to slow down the hardening of concrete at an early age. This is achieved by the fact that the concrete mix includes mineral sticking aggregate, green liquor and water, contains the indicated components. In the following ratio, wt.%: Mineral stranded 11-23 Filler 69-86 Green liquor 0.08-0.25 Water Else Concrete mix is ready t the usual mixing of boiler components, In table. 1 shows the composition of the mixtures In table. 2 shows the results of tests of mixtures. The table shows that with the introduction of green liquor, the relative strength of concrete in compression under the age of 14 days is 1.5-2.5 times lower than the strength of the samples without additives. Table 1 Ineral Livestock Filler Green 0.08 O, 2 Trees 7.92 7.88

709587 .4

table 2

11.3 G7G5

14.1 0, S6

50.5 1.38

Without

content

green25,331,739,0

schelokTGEP) G7SH) 1.00

The numerator indicates the limits for the clearing of concrete samples, in the denominator - the ratio of the limit; the strength of concrete with the addition of green liquor to the control.,

Claims (2)

1.Danyushevsky B.C. and Raychik T.N. Prolonged cement hardening under hydrothermal conditions. VI International Congress on Cement Chemistry, M., VNIISEM Ministry of Industrial Construction Materials, 1974. 2. USSR Author's Certificate No. 381631, C 04 B-13/24, 1971.