SU632665A1 - Binder - Google Patents

Description

I

The invention relates to building materials, in particular to binding substances consisting of granulated blast-furnace slags and caustic alkalis.

Granules known to be grounding substances contain ground granulated slags and caustic alkalis or their salts of acids, which are alkaline and serve as activators of slag hardening. The closest to the invention in terms of technical essence and effect achieved is a stinging one, including c; a new Domain granulated spackle 81-9 O weight. % alkali metal compounds 4-11 wt. % and fly ash 6-8 wt. % This known sting has low corrosion resistance.

In order to increase the corrosion resistance, the described downstream, including the main domain granulated slag and alkali metal compounds, contains alkali metal compounds and sodium fluorosilicate as compounds of alkali metals in the following ratio of components, wt. %:

Primary Domain

granulated slag88-96

Caustic soda 3-7

Sodium fluoride1-5

5Example For testing, four of his mixtures were prepared, with sand in a weight ratio of 1: 3, one different from the sodium silicofluoride content, equal to 0 in each mixture sequentially (wt.%) O; one; 3; five.

Etsky naph is used in the form of an aqueous solution with a density of 1.17 g / cm, and S silicofluoride sodium is in the form of a powder.

The mixture was stirred in a mixer and sealed on a vibrating plate in forms 0 beams 4x4x16cm. After 4 h after manufacturing, the samples were steamed and after 1 day were tested,

The strength characteristics of the obtained beam samples are given in ta. one.

Table 1

3

57 60

As can be seen from the table, with an increase.

the content of P strength indicators is increasing.

Example 2. Sample cubes of size 5x5x5cm were prepared on a dough with a water-cement ratio of 0.3 and steamed according to the h mode at 85 ° C, the specimens were placed two days later

Slag ground Caustic soda

Ground slag

Claims (2)

94 An increase in the corrosion resistance in the heel and a decrease in the basicity of the neoplasms from the incorporation into its composition is due to the appearance of Oaf g and silicon-oxygen anions in the hardening products. Claims of the Invention A slurry comprising basic granulated blast-furnace slag and alkali metal compounds, which, in order to increase the corrosion resistance, it contains as alkali metal compounds 570,648 in aggressive solutions and after 3 months were tested for compression. The corrosion resistance coefficient was calculated as the ratio of the ultimate strength of samples stored in water to the ultimate strength of samples stored in an aggressive solution. The results of determining the coefficient of corrosion resistance are shown in Table 2. Table 2 caustic soda and sodium silicofluoride in the following ratio of components, weight. %: Main blast-furnace granulated slag88-96 Caustic soda 3-7 Sodium silicofluoride1-5 Sources of information taken into account during the examination; 1. USSR author's certificate number 214370, cl. From 04 to 7/14, 1966. 2. USSR author's certificate number 419489, cl. From 04 to 7/14, 1972.