SU1260352A1 - Raw mixture for producing cellular concrete - Google Patents

Abstract

The invention relates to the industry of building materials, in particular to the production of cellular concrete. The purpose of the invention is to improve the strength of concrete and expand the raw material base of production. The mixture contains, wt%: Baked dust 37-42; silica component 9-12 quicklime lime 9-12; phosphogypsum 0.4-0.6; crushed expanded clay 6-8; aluminum powder 0.04-0.07; water the rest. 1 tab.

Description

The invention relates to the production of building materials — and can be used for the manufacture of heat insulating and structural heat insulating products from cellular concrete in the form of panels, blocks, plates, etc.

The purpose of the invention is to increase the strength of cellular concrete and expand the raw material base.

Inclusion in a mixture of crushed; haydite and phosphogypsum leads to the activation of baking dust (i.e., an increase in its binding properties) in the steaming process with the formation of concrete. At the same time, crushed expanded clay serves as an additive, which improves the homogeneity of the concrete structure and reduces shrinkage, attached to concrete with the addition of roasting dust, and at the same time participating in the formation of hydrate tumors in the form of block decomposition.

Raw mix at the specified ratio of components provides for obtaining concrete of increased strength with reduced consumption in the tartan (exclusion from the composition of Portland cement) as compared with the prototype.

To obtain cellular concrete, joint grinding is carried out to a specific surface area of 3000-3500 with the following components, wt%:. Negashen,;

lime 9-12

Is safe 37-42

Siliceous

component9-12

Phosphogypsum 0.4-0.6

A light aggregate, crushed aluminum powder and water to a fraction of 5 mm is added to the ground mixture.

Raw mix is mixed and molded product. After the formation of the cellular structure is formed, the product is subjected to a thermal and moisture treatment at a steam environment temperature of 95-00 C for 10-14 hours.

The results of the test of concrete are presented in the table.

As follows from the table, the characteristics of the cellular concrete from the proposed mixture are much better than the known ones.

The material obtained from the proposed mixture meets the requirements of GOST 11118-73 and can be used for the erection of the exterior walls of residential, public, industrial and agricultural buildings.

Claims (1)

Invention Formula Raw mix for the manufacture of cellular concrete, including baking pyp, silica component,  quick lime, aluminum powder and water, which differs from the fact that, in order to increase the strength and expand the raw material base, it additionally contains crushed clay and phosphogypsum with the following ratio of components, wt.%: Baked dust Silica component Nexahena lime Phosphogypsum Crushed expanded clay Aluminum powder Water 37-42 9-12 9-12 0.4-0.6 6-8 0.04-0.07 Else VJD about g about f o 1A P 1G | P 1L GL about about oh oh ABOUT about (H #one , about one #t h VO 1L P sh 00 oo about in SP Oh oh cm u and with to vO 00 about g "P to about s o w g  g ( about - eat