SU1339025A1 - Method of producing decorative construction articles - Google Patents

Abstract

The invention relates to the industrial use of building materials and is intended for the preparation of gypsum cladding tiles for exterior finishing. The purpose of the invention is to increase the frost resistance and decrease the bulk density. A layer of gypsum slurry is applied to the bottom of the mold, then a 5-10 mm aggregate aggregate, obtained from artificial marble stone sawing stone wastes, is placed on it. The plaster stone is strengthened by its hydrothermal treatment followed by hydration. The filler is laid with a plaster mortar. Layed layers are pressed at a pressure of 6-12 MPa. Hardened slabs unravel. The ratio of the gypsum solution to the filler is 1.27-2.25 by weight, and the ratio of the slurry to the aggregate is 0.24-0.55 by weight. Frost resistance of 250-300 cycles, bulk weight 1400 - 1 700 kg / m. 3 tab. ifi (l

Description

The invention relates to the industrial use of building materials and can be used to obtain gypsum cladding tiles for exterior decoration.

The purpose of the invention is to increase the resistance to frost and reduce the bulk density.

The method is carried out as follows.

A suspension of gypsum with pigments is prepared (for a gypsum e-modification of water, a living ratio of 0.5-0.6, for a p-modification 0.7gO, 8) and a polished steel bottom is applied to the layer of the suspension, a layer of gypsum filler fraction 5- 10 mm. Gypsum aggregate is obtained from stone sawing waste made of artificial marble made of autoclaved reinforced treatment at a pressure of 1.3-2.5 atm for 4-6 hours, followed by hydration of the gypsum stone. The ratio of suspension to aggregate is 0.24 0.55 by weight. A layer of gypsum mortar is laid on the aggregate for an oi-modification with a water-keeping ratio of 0.39-0.4, for an ft -modification of 0.5-0.6 in an amount ensuring the ratio of it to the fill. mass. The laid layers are covered with a sheet of paper and pressung under a pressure of 6-12 MIA. Hardened plats unravel.

Example. A suspension of gypsum in a t-modifying suspension from water is laid in a mold ratio of 0.5 in an amount of 0.5 kg. On her uk

2 kg rubble of cv get around; reinforced marble from gypsum

5-10 mm, obtained by autoclave treatment, substance and crushing. 2.5 kg of gypsum construction of the gypsum solution oi-modification from water with a live ratio of 0.39 is laid on it. The form is closed with cardboard and pressed at a pressure of 12 MPa. Moro

five

0

plate resistance 300 cycles, bulk weight 1700 kg / m.

Test data are shown in table 1-3.

The ratio of suspension to aggregate is 0.24-0.55, i.e. introduction of stone waste within 28 - 40%, provides the optimal porosity of the material, causing high frost resistance of products.

Reducing the introduction of stone waste below 28% does not provide the required frost resistance.

The increase in the amount of waste hardened stone more than 40% leads to an increase in bulk mass.

Claims (1)

When using mortar with a ratio to the aggregate below 1.27, a uniform thin binder between the aggregate does not form, and with a ratio of more than 2.27, an excess of mortar creates insufficiently cracking sections in the structure that reduce the frost resistance of the products. Formula isobteni A method of making decorative building products, comprising applying a slurry layer to the bottom of a mold with pigments, sequentially laying a layer of aggregate and mortar, compaction and hardening, characterized in that, in order to increase frost resistance and reduce the bulk density, a layer is applied to the bottom of the mold gypsum slurry, stack aggregate fraction 510 mm - rock sawing waste five gypsum stone and gypsum solution with the ratio of the latter to the aggregate, equal to 1.27-2.25 by weight, and the ratio of the suspension to the aggregate, equal to 0.24-0.55 by weight, and compaction is carried out by pressing at a specific pressure of 6-12 MPa. raw material The ratio of the layers to the filler by weight 0.2A 0.38 0.55 1.27 2.25 2.02 5.1 62.1 Table I The ratio of the layers, wt.% 9.9 10.4 15, 40 27.5 28 56,6 table 2 I Gypsum Sus- (gr "- pney from knchny) gypsum" -modification m - e and Reinforced gnpsopy a. -modification fraction 5-10mm Gypsum construction mortar made of gypsum wasps 11Gypsum sus (pro-penci i-e gipmezhu-sa ff: -modi | 1.ozkochny) uHvi Reinforcements Gypsum crushed stones of fraction 5-10 mm modification Gypsum construction solution of gypsum h. -Or fi-modification t11Gypsum (gras-suspension of Nich-gypsum a-modiiiy) fikaiiii Reinforced gypsum crushed stone y- - mod () ikatsii fraction 5-10 mm Gypsum plaster 16 gypsum solution or p-modification IV Gypsum coating (beyond the suspension of “-. -Modification of the capacity of go) „ Reinforced gypsum cement et modi-finiaini fraction 5-10 mm Gypsum building solution TV 3 0.49 9.9 300 1700 $ 5 40 2.55 51.1 0.52 10.4 1.37 27.5 250 1600 45 3.1 62 0.77 15.4 1.40 28.0 280 1520 52 2.83 62.6 0.52 10.4 30 1300 42 0.75 15.0 3.98 74.6 Cement-water-suspension with a thickness of 2 mm, fluffed asbestos (3-6Z to the weight of the suspension) Granulated moisture fraction 2-10 mm Concrete mix Editor P.Gereti Compiled by N.Ignatova Tehred V.Kadar Order 4175/12 Circulation 52A Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 1339025 8 Continuation of table 3 120-170 2100-2500 E2 Proofreader A.T. sko