RU1770315C - Raw mixture for cellular concrete production - Google Patents

Abstract

The invention relates to the field of construction, and more specifically to the creation of a new structural insulating building material for the manufacture of panels of external and internal walls, floor slabs and coatings, blocks and stones of walls of residential, public, industrial, agricultural, administrative and auxiliary buildings and buildings with a relative humidity of indoor air of not more than 60%, as well as thermal insulation products and other structures. The raw mix for the manufacture of cellular concrete contains, kg / m3: clay - 350-680, gypsum - 5-12, aluminum powder - 0.40-0.46, sand - 380-700 and water 220-300. The mixture is prepared by mixing all the components in a hydrodynamic mixer or vibratory mixer. The density of cellular concrete is 800-1400 kg / m3, strength class B2.5-B7.5, frost resistance grade F 15-P100.2tabl. cl

Description

Aerated clay belongs to the field of construction, and more specifically, to the creation of a new structural and thermal insulation building material of local importance for the manufacture of panels of external and internal walls, floor slabs and coatings, blocks and stones of residential, public, industrial, agricultural, administrative and auxiliary walls buildings and structures with a relative humidity of indoor air of not more than 60%, as well as thermal insulation products and other structures.

Known heat-insulating clay-cement-aerated concrete non-autoclaved hardening 1.

Its disadvantage is the high thermal conductivity and cost of the material.

A pure concrete mixture is also known, including clay, cement, gypsum, aluminum powder and water 2.

The disadvantage of this mixture is its high cost due to its use as cementitious cement.

The purpose of the invention is to reduce the cost of the mixture by eliminating cement while maintaining average density and mechanical strength.

This is achieved by the fact that the raw mixture contains, kg / m3:

clay 350-680

gypsum 5-12

aluminum powder 0.40-0.46

sand380-700

water 220-300

The raw mix for the manufacture of cellular concrete in quantitative composition will have the following ratio of its components 1).

The proposed concrete has the following characteristics:

h | Vj

ABOUT

with

Joint venture

a) the class of compressive strength with grades of medium density: D800, D900, D1000, D1100. D1200, D1300-B2.5; B-3.5; AT 5; B7.5; D1400 - B3.5: B5; B7.5. Prototype B4.5, B5.5.

b) brand frost resistance-F15; F25; F35; F50; F75; F100;

c) the average density grade is D800; D900; D1000; D1100; D1200; D1300: D1400.

For the manufacture of clay concrete, natural clay (i.e. clay found in nature as separate deposits) should be used, which includes brick (primarily) clay, ceramic clay, organic clay and other clay (after careful laboratory testing). and sand - going for the manufacture of concrete and mortars on mineral in cement, as well as sand for construction work (GOST 8736-77).

Clay concrete water should be used with potable as well as clean water, which is used for technical purposes.

As a gas-generating (pore-forming) agent upon receipt of the proposed clay concrete, it should be used

an aqueous suspension, which is made from PAP-1 aluminum powder in a NIPI silicate concrete installation or from aluminum powder paste in a special installation providing explosion-proof preparation of an aluminum suspension.

It is possible to prepare a paste according to the NIIJB method by mixing aluminum powder with an aqueous solution of sulfanol with a weight ratio of 1: 1 (25 grams of sulfanol should be contained in 1 liter of an aqueous solution of sulfanol).

Aerated concrete mixture is prepared in a hydrodynamic mixer, vibration mixer.

Claims (1)

The claims Raw mix for the manufacture of cellular concrete, including clay, gypsum, aluminum powder and water, characterized in that, in order to reduce the cost of eliminating cement while maintaining average density and mechanical strength, it additionally contains sand in the following ratio of components, kg / m : clay 350-680; gypsum 5-12; aluminum powder 0.40-0.46; sand 380-700; water 220-300. Table 1 1770315 Aerated clay character “ues with the following great chicani 8 heat engineering indicators table Note # h a N and: The calculated value of. ххххюигентность - clay concrete in the structure is subtracted by the formula, The characteristics of the proposed humidity, equal to zero. Dry-clay aerated concrete is given at a weight