RU2106245C1 - Concrete product manufacture method - Google Patents

Abstract

FIELD: production of construction articles from concrete mixtures. SUBSTANCE: method involves separate feeding of bulk inert material and concrete mixture into vessel; forming and stripping. Prior to feeding bulk inert material into vessel, bottomless form with open top is placed into vessel. Form is filled with concrete mixture and removed from vessel. Vessel is filled with dry bulk inert material and form is filled with dry concrete mixture, which is subjected to moistening upon removal of form from vessel. Prior to feeding bulk dry inert material, additional forms are positioned within or outside main vessel to be filled with bulk inert material or dry concrete mixture or similar or other composition. Stripping is performed by removing bulk material from vessel. Additional procedures recited in Specifications allow articles of different configuration with textured or ornamented surface to be obtained. EFFECT: increased efficiency, improved quality of products, reduced material usage, wider range of manufactured products. 11 cl

Description

 The invention relates to the field of construction, namely the production of building products of various configurations in terms of concrete mixtures.

 A known method of manufacturing concrete products, including the separate supply of bulk inert material and concrete mixture to the container, molding and stripping of products.

 The disadvantage of this method is the inability to manufacture concrete products of various configurations without a significant change in the molding tooling.

 The purpose of the invention is the reduction of material consumption and the complexity of manufacturing various products in the form.

 This is achieved by the fact that in the method of manufacturing concrete products, comprising separately supplying bulk inert material and concrete mixture to the tank, molding and stripping the products, before feeding the bulk inert material into the tank, a bottomless open top form is placed in it, which, after filling with concrete mixture, is removed from containers, moreover, filling the containers and molds is carried out, respectively, with dry bulk material and a dry concrete mixture, followed by moistening the latter after removing the mold from the container. In addition, before the dry bulk inert material is fed into the tank, additional forms can be placed inside and / or outside the main one, followed by filling them with loose inert material or a dry concrete mixture of the same or different composition, and the product can be removed by removing bulk material from the tank . Filling the tank can produce a heated bulk inert material. Humidification of the dry concrete mixture can be carried out through an injector, which is placed in the form before or after the dry concrete mixture is fed into it. At the same time, a container with bulk material can be isolated from the atmosphere after wetting the dry concrete mixture. And as a dry bulk material, a material with a bulk density equal to or greater than the bulk density of the dry concrete mixture is used. As a dry bulk material, quartz sand can be used. In this case, the mold is removed from the tank by vertical movement relative to each other. It is possible to extract the shape of the container by parts having vertical connectors along its entire height, at least from the front side of the product, and from the front side of the product to extract part of the form by reciprocating movement to increase the density of the front layer or to form a texture on it.

 The method of molding concrete products is carried out in a container filled with material, for example quartz sand, which after mixing the dry concrete mixture and the end of the molding process remains bound in the boundary layer of the product, giving it decorative properties. The mixing process is carried out after the extraction of forms that follow the contours of the product from the tank, supplying water, either from below, or from below and from above at the same time, or through injectors that are installed in the molds before being removed and mainly left in the product. Removing the mold from the container can be done in parts, for example, initially removing part of the mold from the front of the product to its entire height, and then the completely remaining part of the mold. Moreover, it is possible to obtain a relief (textured) surface from the front of the product due to the reciprocating movement of the mold wall during extraction. This wall movement in the manufacture of two-layer products contributes to better adhesion of the layers in the product. And the possibility of manufacturing two-layer products or products with longitudinal voids provides the installation of additional forms inside the main form or the installation of separation walls in the forms. The product is stripped off either by removing it from the tank by vertical movement, or by pouring sand after hardening with dry concrete mix with water sealed. To intensify the hardening process, it is possible to use heat treatment or, in addition to exothermic heat, use the heat of bulk material, which is dried and heated before filling into the container.

 Widespread implementation of the invention is possible at enterprises that produce a wide range of products, without creating a sufficiently metal-intensive fleet of equipment.

Claims (11)

 1. A method of manufacturing concrete products, comprising separately feeding bulk inert material and concrete mixture into the container, molding and stripping the products, characterized in that prior to feeding the bulk inert material into the container, a bottomless open top form is placed in it, which, after filling with concrete mixture, is removed from containers, moreover, filling the containers and molds is carried out, respectively, with dry bulk inert material and dry concrete mixture, followed by moistening the latter after removing the mold from the container.  2. The method according to claim 1, characterized in that before feeding the dry bulk inert material, additional forms are placed in the container located inside and / or outside the main one, followed by filling them with loose inert material or a dry concrete mixture of the same or different composition, and stripping products are made by removing bulk material from the tank.  3. The method according to claim 1, characterized in that the filling of the tank is carried out with heated bulk inert material.  4. The method according to claims 1 and 2, characterized in that the wetting of the dry concrete mixture is carried out by supplying water from below and / or above.  5. The method according to claims 1 and 2, characterized in that the wetting of the concrete mixture is carried out through an injector, which is placed in the form before or after supplying the concrete mixture to it.  6. The method according to claim 3 or 5, characterized in that the container with bulk material after wetting the dry concrete mixture is isolated from the atmosphere.  7. The method according to claim 1, characterized in that as a dry bulk material using a material with a bulk density equal to or greater than the bulk density of the dry concrete mixture.  8. The method according to claim 1, characterized in that silica sand is used as a dry bulk material.  9. The method according to p. 1, characterized in that the extraction of the form from the tank produce them by vertical movement relative to each other.  10. The method according to PP.1 and 9, characterized in that the extraction of the form from the tank is carried out on parts having its entire height vertical connectors, at least from the front of the product.  11. The method according to claims 8 and 10, characterized in that on the front side of the product, part of the mold is extracted by reciprocating movement to increase the density of the face layer or to form a texture on it.