SU1377269A1 - Raw mixture for producing cellular concrete - Google Patents

Abstract

The invention relates to the production of building materials and can be applied to enterprises manufacturing building parts and structures from cellular autoclaved concrete. In order to reduce the bulk density while maintaining strength, the raw mix for making cellular concrete contains May. %: Portland cement 3.32-37.5; two-water gypsum 0.12-2.10 aluminum powder 0.03-0.09; ash - CHP 1.6-45.0; felsite-porphyry 7.54-50.5J, asbestos-cement waste from 0.09-2.2, and lime — the rest. Bulk weight cellular concrete 450-650 n / m, strength 6.6-10.6 MPa. 2 tab.

Description

one

The invention relates to the production of building materials and can be applied to enterprises manufacturing building parts and structures from cellular autoclaved concrete.

The aim of the invention is to reduce the bulk density of products while maintaining their strength,.

The introduction of the mountain effusive rock (volcanic) - felsite-porphyry, as a silica component into cellular concrete, makes it possible to reduce the bulk mass while maintaining strength due to the formation of a large amount of low-basic calcium hydrosilicates of the CSH group (5) and better porization of the cellular mass,

To prepare the honeycomb concrete as sfevyh materials used Portland cement and asbestos cement waste Kant shifer- Nogo cement plant, fly ash Frunzen- tion TETs.dvuvodny Dzhdmbulskogo gypsum deposits petrosilex-porphyry Dzhel- Arnsskogo field area Kirghiz SSR, aluminum powder Large T from Ural ,

35

The chemical composition of Portland cement, dihydrate gypsum, fly ash and felsite-porphyra is given in Table 1,

In the preparation of the cellular concrete mixture, felsite-porphyry and double-wall gypsum were crushed to a fraction of 5–20 mm. Then, the felsite porphyry, dihydrate gypsum, fly ash, lime-boil are precisely measured, ground and crushed in the presence of Q water in a ball mill to obtain a slurry with a specific surface area of 2800-3500

cm vr,

The preparation of the cellular concrete mixture is carried out using conventional methods accepted for the technology of cellular concrete. In a concrete mixer, first pour limestone. In-silica

sludge and wastes from asbestos cement industry and mix for 2 minutes. After stirring for 2 minutes, Portland cement and water-aluminum slurry are added. The blended mixture is discharged into the preheated form, it swells up. After

40 ° C

full heaving and setting of the products cut off the peel and processed in an autoclave at a pressure of 12 atm for 8 h.

The test results are shown in Table. 2

Industrial production of cellular concrete mixture does not differ from existing technology. Economic. The effectiveness of cellular concrete is achieved by reducing the consumption of portland cement, since its composition includes fly ash, waste from the asbestos-cement industry and lime, and non-deficient material felsit-porphyry.

Claims (1)

Invention Formula Raw mix for making cellular concrete, including port5 five 0 Q . Land cement, lime, dihydrate gypsum, aluminum oxide powder, silica component and additive, about that and with the fact that, with a chain of decreasing bulk weight while maintaining strength, it contains CHP ashes and felsite-porphyry, and as an additive, the output of asbestos-cement industry in the following ratio of components, May. %: Portland cement 3.32-37.5 Two-water gypsum 0., 12-2.10 Aluminum powder 0.03-0.09 Zola CHP1.6-45.0 Felsite-porphyry 7.54-50.5 Waste of asbestos-cement industry 0.09-2.2 LimeEstal Table 1 Diabase fraction 1.25-10 mm,% 13.4-24.0 47.5-48.0 700-720 4.5-6.6 Continued table. 2 860 650 450 540 420 10.8 10.6 6.6 7.9 5.5