SU808452A1 - Raw mixture for producing heat-insulating concrete - Google Patents

Description

(54) RAW MIXTURES FOR MANUFACTURING

HEAT-INSULATING HEAT-RESISTANT CONCRETE

Table 1 shows the proposed composition of the raw mixes.

Table

Pre-mix liquid glass with a grinder of volcanic slag, after which volcanic slag crushed stone and expanded perlite sand are gradually introduced into the mixture with stirring. The concrete mixture is placed in molds, kept for 2 hours and cjouaT according to the 3 + 34-2 hour mode at the temperature of the isothermal drying period .IBoOc.

The results of physico-mechanical tests of fabricated samples, showing the advantage of nperfharaeNKDC compositions of raw mixtures in comparison with the known, are given in table 2.

Table 2

Claims (1)

The claims The raw material mixture for the manufacture of heat-insulating heat-resistant concrete, including water glass, expanded perlite sand, coarse aggregate and finely ground mineral additive, characterized in that in order to increase strength and thermal resistance, it contains water glass with a module of 1.0-1, 5, as a coarse aggregate - volcanic slag crushed stone and 50 and as a fine-grained mineral additive - ground volcanic slag in the following ratio of components, wt.%: Liquid glass with module 1.0-1.5 Volcanic slag crushed stone Ground volcanic slag Expanded Pearlite Cord 30-40 20-28 16-20 Rest