SU1024444A1 - Raw mix for preparing light-weight concrete - Google Patents

Abstract

RAW MIXTURE FOR MAKING LIGHT CONCRETE, including ground granulated slag, alkaline activator and hydrolyzed lignin, which in order to reduce bulk density and thermal conductivity and increase compressive strength, it also contains crushed wood in the following ratio of components, wt. : Ground granulated slag30- 5 Alkaline activator10-15 Hydrolyzed lignin15 25 Wood shredded15 5 s

Description

The invention relates to compositions of lightweight concrete mixtures based on mineral viscosity and organic aggregate and can be used in the building materials industry for the manufacture of building products and structures.

The known raw material mixture for the manufacture of thermal insulation products, including hydrolyzed lignin, ground granulated slag, alkaline activator and sand Q.

The disadvantage is that the products from this raw mixture have a relatively high bulk density and thermal conductivity coefficient.

Closest to the invention is a raw material mixture for the manufacture of a thermally insulating material, comprising; ground granulated slag 55-63; alkaline active asbestos 15-20; lignin else 2,

A disadvantage of the known raw material: the mixture is that the material from it has a relatively high bulk density and a coefficient of thermal conductivity and low compressive strength.

The purpose of the invention is to reduce;, the bulk density and the coefficient of thermal conductivity and increase the compressive strength of lightweight concrete.

The goal is achieved by the fact that the raw mix for the production of lightweight concrete, including ground trannulized slag, alkaline activator and hydrolyzed lignin, additionally contains wood crushed material in the following ratio of components, weight,%:

Ground granulated slag30- "B

Alkaline activator 10-15 Hydrolytic league, rank 15-25 Wood shredder In the manufacture of products of the proposed composition using wood shredded with a particle size of 2.5 g 20 mm, lignin with a particle size of 14-2.5 mm, ground granulated blast furnace slag { ) hnostyo. The alkaline activator NaOH is introduced with mixing water in the form of a solution with a density of 1,201, 25 g / cm

The manufacture of the raw mix, molding, compaction and hardening of concrete is carried out according to the known technology of the production of wood concrete.

The compositions of the proposed and known raw material mixtures for making concrete are shown in Table 1.

C) and the technical characteristics of the material from the proposed and known mixtures are given in table 2.

From table 2 it follows that the lightweight concrete from the proposed raw mix in comparison with concrete from a known mixture has a lower bulk density, a lower coefficient of thermal conductivity and greater compressive strength (mixture C and 5 with a bulk density of 98 ..

Table

K) 10

30 35

AO

12.5

5 15 55-63,

5-7

5 35 25

15

15-20

but

35

“401

itSS-TSO

table 2

ABOUT,

1.2 1.8 0.075 2.3 0.077 2.8 0.078

1.8-, 5 (through

, 093-0,128 28 days)

Claims (1)

RAW MIX FOR PRODUCTION OF LIGHT CONCRETE, including ground granulated slag, alkaline activator and hydrolysis lignin, characterized in that, p. In order to reduce the bulk mass and the coefficient of thermal conductivity and increase the compressive strength, it additionally contains wood chippings in the following ratio of components, wt.,%: Ground granular slag 30-45 Alkaline activator 10-15 Hydrolysis lignin 15-25 Wood shotgun 15-45 <D ^ 5. > 1024444 1 tiviz ^ op and hydrolytic lignin, additionally contains wood crushed in the following ratio of components, wt.%: Ground granular