SU654585A1 - Method of manufacturing concrete decorative articles - Google Patents

Description

(54) METHOD OF MANUFACTURING CONCRETE DECORATIVE PRODUCTS

The invention relates to the building materials industry and, in particular, to methods for producing concrete decorative products, such as wall tiles, exterior wall panels, loggia screens and balconies.

A known method of manufacturing products with an outer layer, in which crushed stone is placed on a mold tray, poured the cement-sand mixture, moistened with water and filled with concrete mix 1.

The closest to the invention to the technical essence and the achieved result is a method of making concrete decorative products, including sequential laying of a relief matrix, facing material, applying mortar and concrete mix, compaction and heat treatment of products 2.

The disadvantages of such methods are the mixing of the facing material when pouring the concrete mix, the need to clean the products after heat treatment, and the complexity of the process.

The purpose of the invention is to reduce the complexity of the process and the production of products with naked texture.

This is achieved by the fact that with the method of making concrete decorative products, including sequential laying of a relief matrix, facing material, applying mortar and concrete mix, compaction and heat treatment of products, after laying the facing material, the latter is subjected to vibration, and the solution and concrete are scented . m

The method is carried out as follows.

Claims (2)

A matrix with a relief-forming surface is laid on the form pallet. Matrices can be made of various materials (rubber, plastic, metal mesh). The height of the elements of the relief matrix should be the same. In addition, the lateral faces of the relief elements should have an angle of at least 40 degrees with the plane of the pallet. The distance between the individual relief elements of the matrix should not exceed the maximum grain size of the crushed aggregate. A layer of crushed lining material, which is 5–10 mm above the height of the elements of the matrix relief, is poured onto a matrix laid on a pallet of a mold and subjected to a short-term vibration shape. Due to the greater mobility of the small and medium fractions during vibration, they usually accumulate at the bottom of the matrix, pressing up larger. This contributes to a more dense styling of crushed material. On top of the crushed material, a perfume stream consisting of thin jets with a thickness of 5-10 mm, directed perpendicularly to the pan, the molds are applied with a uniform layer of decorative solution. It is desirable that the color of the solution matches the color of the crushed material. After laying the decorative solution, fill the form with a constructive solution with a perfume stream — by feeding the solution through a sieve with openings of 5–15 mm, which prep-; It promotes the displacement of the filler grains of the facing layer. The concrete mix is then laid and compacted by vibration followed by heat treatment of the product. After heat treatment, the mold is spalled, the product is freely removed and sent to the cleaning post. Grains of crushed material that are not attached to the solution are brushed off from the surface of the product. Forming products using the described method provides for obtaining on the front surface of products a uniform, black-headed texture. The shift of the filler grains is excluded due to their lasting retention in the cells between the relief elements of the matrix. Elements of the relief of the matrix do not allow the shear of crushed material during the laying of the solution and vibration. The tight placement of small and medium grains at the bottom of the matrix prevents the solution from leaking and the formation of swollen spots. The presence of large grains on the upper surface of the matrix contributes to the deep penetration of the filler grains into the solution layers. Claims The method of making concrete decorative products, including sequential laying of a relief matrix, facing material, applying mortar and concrete mix, compaction and heat treatment of products, characterized in that, in order to reduce the complexity of the process and to obtain products with bare texture, after laying the facing material , the latter is subjected to vibration, and the solution and concrete mixture are applied with a perfuming stream. Sources of information taken into consideration in the examination 1.PPP № 62368, cl. 8061/07, 1971. 2. Accepted for VKA- Japan 48-28329, cl. At 28 1/16, 1973.