SU550815A1 - Slag-silicate mass - Google Patents

Description

FIELD: composition. 1 shakosilikatogo mass and can find application in the construction industry for the manufacture of various silk-resistant products. A glacosilicate mass is also known, including a domain donkey, live glass, and filler 1. The lime is also a slag silicate mass, including water glass, slag, chalk, and additive 2. The last of these masses is most closely related to the technical essence and the achieved result. However, the known masses have alkali resistance. With the aim of increasing the clean-up ratio, the slag-silicate pulp contains magnesium fluoride as an additive, blast furnace slag with a specific surface area of 3000–4000 cm / g and chalk with a specific surface area of 30004000 as a slag in the following ratio of components, parts by weight .: Liquid glass 20-30 Blast furnace slag 50-56 Mel40-45 Magnesium fluorofluoride4- 5 Finely divided chalk or limestone and magnesium fluorofluoride are introduced into a known mass instead of filler (granite and slag sheben). The proposed slagos.pikatna mass is corrosion-resistant in both concentrated and dilute alkalis. In addition, the dense structure provides it with sufficient strength (600-800 kg / cm) and water resistance (water resistance ratio of 0.95-0.98). The alkali resistance of the products is ensured by the fact that during the hot forming process, intense interaction with each other, they form a highly rock-like material consisting of calcium and magnesium hydrosilicates of a high degree of crystallinity, cementing an alkali-resistant carbonate aggregate. It provides resistance to alkalis.

Alkali-resistant mass is prepared in the following way,

Blast-furnace (basic) slag, pure limestone or chalk is mixed with magnesium fluorofluoride and moistened with potassium or sodium liquid glass. To obtain a homogeneous mixture, an alkali-resistant mass is prepared in mortar or concrete mixers. The obtained shell-resistant mass is hot-molded at a temperature of 150-200s and a pressure of 50-200 kg / cm for 2-3 minutes per 1 mm of the thickness of the finished product.

The products obtained from the proposed mass have high density, strength, water resistance and alkali resistance. They can be used in the construction of various constructions and structures that are constantly exposed to concentrated solutions of alkalis.

An example. Blast-furnace (main) slag, pure limestone or chalk is mixed with magnesium fluorofluoride in the following ratio, weight, hours:

Finely ground

blast furnace slag

(specific surface 3000-4000 CM- / G)

55

Fine chalk

(specific surface

3000-4000)

40

Fluorosilicate

magnesium .5

Then it is moistened with a potassium or sodium liquid glass (specific weight 1.40-1.45, module, 2.2-3.0) in the amount of 20 weight, h, per 100 weight, h, dry mixture.

The homogeneous mixture obtained is subjected to hot

molding at a temperature of 150-200 C and a pressure of 50-200 kg / cm for 2-3 minutes per 1 mm of the thickness of the finished product,

The alkali resistance of the mass after boiling b h in 30% NaOH was 98.6%. The strength of the mass upon compression after 20 days of aging at 95 ° C in 30% NaOH was 676 kgf / cm (the strength of the initial samples of 4x4x4 cm was equal to 678 kgf / cm), The percentage loss of strength of 0.3.

As the test results show, the described slag silicate mass has a high alkali resistance.

Claims (1)

Invention Formula Slag silicate mass, including liquid glass, slag, chalk and an additive, characterized in that, in order to increase the alkali resistance, it contains magnesium fluorofluoride as an additive, as a donkey a blast furnace slag with a specific surface of 3000-4000 cm Vr and 5 chalk with 30004000 CMVr specific surface area with the following ratio of components, weight, hours: Liquid glass 20-30 Blast furnace slag50-56 Mel40-4b Fluorosilicate magnesium4 5 Sources of information, n | take into account in the examination 1, Volzhensky A.V., et al., Concretes and products from slag and ash materials, M., stroiizdat, 1969, c, 203-205, 2, USSR Author's Certificate No. 460266, class, C 04 B 19/04, 1973.