RU1837054C - Binder - Google Patents

Abstract

The invention relates to hydraulic hardening compounds and can be used for the manufacture of building products. The purpose of the invention is to increase water resistance and whiteness in binder. It contains, in wt.%; saturated solution of magnesium chloride with a density of 1.2 g / cm3 5-7: silicophosphate 3-10, chalk 12-14, caustic magnesite - the rest. The water resistance coefficient is 1.56. The whiteness coefficient is 86%. 1 tab.

Description

The invention relates to compositions in -: hydraulically hardened and can be used for the manufacture of building products.

The aim of the invention is to increase water resistance and whiteness.

Silicophosphate additive TU-113-06-1J0159550-3-88 is a thermally processed to obtain non-hygroscopic product at 400 ° C ground sand and phosphoric acid, the ratio of the components of the silicophosphate additive

 1-1

NZRSm

Introduction to the composition of the baking silicone. phosphate promotes the formation of water-insoluble, gel-like magnesium hydrosilicates.

In the manufacture of binder, caustic magnesite, calcined for three hours at 700 ° C, is crushed in a ball mill to a residue on a sieve of 008 20-25%. Silicophosphate is crushed separately. then

caustic magnesite is mixed with silicophosphate and the mixture is sealed with a saturated solution of magnesium chloride with a density of 1.2 g / cm3 to obtain a test of normal density.

From the obtained test with a water-solid ratio of 0.34-0.35, samples are formed - cubes 2x2x2 cm in size, which harden in air for 28 days. After that, the samples are tested. To determine the water resistance of the binder, some of the samples after 26 days of air hardening are immersed in water, kept there for 32 days, and then their strength in the wet state and after drying to a constant mass is determined.

The compositions and physico-mechanical characteristics of the cement and prototype are shown in the table.

From the results presented in the table, we can draw the following conclusions:

LO

WITH

with

with

Xi

about

Joint venture

4

- softening coefficients of the samples of the proposed composition are 43% higher than the known

-water resistance of 42% whiteness by 15% of Formulas A has been invented and binder, including caustic

magnesite, an aqueous solution of magnesium chloride, a phosphate-containing component, characterized in that h) o, in order to increase water resistance and whiteness, it contains

a saturated aqueous solution of magnesium chloride with a density of 1.2 kg / cm, as a phosphate-containing component, silicophosphate and optionally chalk in the following ratio of components, wt.%:

Saturated water

magnesium chloride solution

density 1.2 g / cm

Silicophosphate 3-10

Chalk 12-14

Caustic Magnesite

Caustic Magne 70 Zit

Magnesium Chloride J 60.3 69.8 7.0

Silicophosphate 10

Nel1J

Caustic Magnesite75

Magnesium Chloride 6 5.2 6t, 7 75.0

Silicophosphate5

MelI

Caustic Naked

en: 30

Magnesium Chloride 553.66.071.5

Silicophosphates

Nel12

1.19

1.27

86

1.37

1.56

86

1.29

1.J2

85