RU2517308C1 - Method to produce wood concrete products with making base for plastering on their surface - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: in the method to manufacture wood concrete items with production of a base on their surface for plastering, providing for preparation and dosing of a hydraulic binder, ground cane stems, water, mixing of components, moulding of items with vibration, hardening, moulding with vibration is carried out so that cane stems cut into sections with length of 4-6 cm are located near the surface of the items, with one end staying in the mix, and with the other one - protruding outside and forming a base for application of plaster.

EFFECT: higher convenience of plaster application onto surface of items.

Description

The invention relates to the building materials industry and relates to the manufacture of products (blocks) from wood concrete with the simultaneous production of a base for plaster on their surface.

A known method of manufacturing products from composite material, involving the preparation and dosing of a hydraulic binder, crushed stalks of reeds, water, mixing components, molding products with vibration, curing [1].

The objective of the invention is to improve the convenience of applying plaster to the surface of arbolitic products.

The technical result is achieved by the fact that according to the method of manufacturing arbolite products with obtaining on the surface of the base for plaster, providing for the preparation and dosing of a hydraulic binder, crushed stalks of reeds, water, mixing the components, molding products with vibration, curing, molding with vibration is carried out in this way, so that the reed stalks chopped into segments 4-6 cm long are located near the surface of the products, with one end remaining in the mixture, and the other protruding outward and forming the basis for aneseniya plaster.

In the manufacture of arbolite products according to the proposed method, any hydraulic binder (Portland cement and its varieties) is used; stalks of reed (Phragmites australis) chopped into segments 4-6 cm long, the moisture content of which should be 10-12%; it is possible to use chemical additives that impart resistance to biodegradation to reed pulp.

The method is illustrated by the following examples of the manufacture of arbolite products with obtaining on their surface a base for plaster.

1. The reed cane stalks are cut into segments 4-6 cm long. Hydraulic binder, water, reed stalks are dosed, for example, in the following quantities, wt.%: Slag Portland cement (M 500) 46; reed stems 19.6; water is the rest. The components are mixed, the resulting mixture is laid in the mold. Molding of products is carried out with vibration (2800 vibrations / min, amplitude 0.15-1 mm, vibrations vertically directed) on vibratory platforms.

2. The reed stalks are cut into pieces 4-6 cm long. The moisture content of prepared stems should be 10-12%. Chemical additives are prepared: chromium-containing sludge of the following average composition ”wt.%: Total CrO3 - 9.8; CrO3 water soluble - 3.4; Acid-soluble CrO3 - 1.6; CaO act. - 2.37; Total CaO — 21.4; MgO - 35.7; Fe2O3 - 19.2; Al203 - 2.85; SiO2 4.8; the rest is water; pyrite cinders, consisting mainly of a mixture of iron oxides (II, III), calculated on the iron content of 40-63%, sulfur impurities 1-2%, the rest are non-ferrous metal oxides; technical sulfur - a by-product of oil refining with a purity of 99.06%, mass fraction of ash - 0.4%; mass fraction of volatile organic substances - 0.53%; mass fraction of moisture - 0.01%.

Hydraulic binder, chemical additives, water, reed stalks are dosed, for example, in the following amounts, wt.%: Portland cement (M 500) 35.2; chemical additives (technical sulfur 3.4; chromium-containing sludge 1.6; pyrite cinders 6.7); reed stalks 20.1; water is the rest. The components are mixed, the resulting mixture is laid in the mold. Molding of products is carried out with vibration (2800 vibrations / min, amplitude 0.15-1 mm, vibrations vertically directed) on vibratory platforms.

Since the cementitious composition of the mixture is heavier by weight than the stalks of reeds, during the process of vibration the stems of the reeds with one end (end, side) remain in the concrete mixture, and the other end of the stem comes out near the surface of the molded product and forms the base ("shingles" ) for subsequent application of plaster. After curing products, their surface is plastered.

With this method, labor costs are reduced when plastering surfaces of arbolite products, and the service life of the products is increased.

Information sources

1. RU 2148053 C1 2000.

Claims (1)

A method of manufacturing arbolite products to obtain a base for plaster on their surface, comprising preparing and dosing a hydraulic binder, crushed stalks of reeds, water, mixing the components, molding the products with vibration, curing, characterized in that the molding with vibration is carried out so that lengths of 4-6 cm lengths of reed stalks were located near the surface of the products, with one end remaining in the mixture and the other protruding outward and forming the basis for applying plaster.