SU562534A1 - Cellular concrete mix - Google Patents

Description

one

The invention relates to compositions of raw materials for the manufacture of lightweight concrete, and can be used in the industry of building materials for the production of bearing and protecting instruments.

PIUS.

The raw material mixtures for preparing porous fine-grained concrete, containing cement, dispersed ash of power plants, porous slag filling material, such as granulated blast furnace slag, with a grain size up to 1O mm and a complex additive in the form of a gasifier Apyumiyevuyuyu, surface, zo-1O mm, and a zoomer-1O mm and a complex additive in the form of a gasifier Apyumiyevoy poor, surface-for-1, zo-1O mm, and a zoomer, a zoomer-1O mm, and a complex additive in the form of a gasifier Apyumiyevoy poor, surface-for-1, zo-1O mm, and a zoomer-10% of a gasifier of a gasifier Apyumiyevyi poore, a sacred surface, up to 10 mm, and a zoomer-1O mm and a complex additive in the form of a gasifier Apyumiyevoy poor, surface-for-1, zogee-1O mm, and a flame retardant; 1.IS salts

Of the known mixtures, the most efficient to the proposed technical dryness and the achieved result is a light concrete mixture, including cement, silica 20, earthy component, surfactant, aluminum powder and caustic

A disadvantage of impregnated mixtures is the duration of the porisation process and the increased volumetric weight of the products, which is not satisfactory.

it creates the requirements for the preparation of exterior wall panels.

The aim of the invention is to shorten the time it takes to cut, the reduction in bulk weight and the increase in strength.

It is achieved by i-eM that the mixture as a silica component contains ashes and additionally slag filling in the following ratio of components, weight. %:

15.0-30.0

Fly ash

Superficially

0.09-0.15

active substance

Aluminum Potsra

0,002-0,02

Sodium hydroxide

0.1-0.5

ZO.O-65.About

Slag aggregate

Cement

Rest

The essence of the invention is that the polishing of the mixture is due to the foaming effect of the additive surfactant, and the aluminum powder is a micro-additive introduced to stabilize the volume of the porous mixture with possible sedimentation phenomena in it. the aging process (exposure to heat treatment). The specificity and essence of the proposed mixture lies in the fact that the addition of sodium hydroxide in combination with the specified "ratio of surfactant and aluminum powder results in accelerated porisation of the mixture based on ash and slag aggregate due to the achievement of high nesztay ability (sustainability) foam mass, which in turn is due to the stabilizing effect of dispersed ash, which mineralizes foam. The accepted ratios of ash and slag aggregate ensure that the mixture is in proportion with the set) ia & moisture. For the manufacture of porous slag concrete, slag portlanddement M ZOO, coal ZOLU of the South Kuzbass State District Power Plant with a specific surface of 4500 cm / g, blast-furnace slag of wet granulation of the Kuznetsk Metallurgical Plant with a grain size of up to 10 mm and a bulk volume of 10 kg were used. Progressing agent (SAS), PAK-3 aluminum powder and sodium hydroxide. The composition of the porous mixture (wt.%): Slag Portland cement - 30, ash - 25, granulated slag - 45, surfactant 0.1, aluminum powder 0.01, alkaline additive - O, 3.

The mixture was prepared in a turbulent mixer, then samples of 10x10x10 cm were molded and steamed in a chamber at 9 ° -100 ° according to the 3 + 10 mode -) - 3 hours.

The properties of the obtained slag concrete in comparison with the property of the concrete of the prototype are shown in the table.