RU2309920C1 - Aggregate for decorative concrete - Google Patents

Abstract

FIELD: manufacture of aggregates for decorative concrete.

SUBSTANCE: proposed aggregate is used for decorative concrete articles which are made by preparation of concrete mix from portland cement, quartz sand and aggregate, molding, hardening for at least 28 days followed by sawing the articles into slabs or blocks and polishing their surfaces. Metal aggregate has cavity filled with colored cement-sand mortar which is hardened afterwards.

EFFECT: reduced density of articles at retained strength.

2 cl, 2 dwg

Description

The invention relates to the production of aggregates for decorative concrete.

Known aggregate for decorative concrete in the form of metal billets (cast iron) [1, 2]. Such aggregate is used in X-ray protective concrete and mortar and is not intended for the preparation of decorative concrete.

The objective of the invention is to reduce the density of products while maintaining strength.

The technical result is achieved by the fact that the aggregate for decorative concrete products obtained by preparing the concrete mixture, molding, curing for at least 28 days, followed by sawing the products into plates or blocks and grinding their surfaces, is made of metal with a cavity filled with cured colored cement sand solution.

Figure 1 shows a filler in the form of a tube; figure 2 - the surface of the product of decorative concrete using aggregate.

Metal billets 1 have cavities 2. The billets can be made, for example, in the form of short tubes (steel, aluminum, brass, etc.) with various cross-sectional configurations (round, square, triangular, etc.) of balls, cones, pyramids.

From colored Portland cement and quartz sand taken in a mass ratio of 1: 3 with a water-cement ratio of 0.45, cement-sand mortars of various colors are prepared. The cavities of 2 open (tubes) or closed (balls, cones, pyramids with a hole made in them) of the blanks 1 are filled with cement-sand mortars and 1 day before curing.

Concrete mixture is prepared from Portland cement, quartz sand, the proposed aggregate and water, put into molds, compacted, after 1 day the products are removed from the molds and left until they reach at least 28 days of age. The resulting products are sawn into plates, blocks, their surface is ground.

The resulting products are characterized by a density of 2200 kg / m ³ and a strength of 22.4 MPa.

Using aggregate, it is possible to obtain concrete products whose surface has many metal contours with a colored core. Using cement-sand mixtures of different colors to fill the cavity of the workpieces, it is possible to obtain concrete products with a decorative multicolor surface.

The use of the proposed aggregate in decorative concrete improves the consumer properties of products.

Information sources

1. Alexandrovsky A.V., Popov K.N. Materials for decorative, plastering, tiling and mosaic work. - M .: Higher. school., 1986. - S. 96.

2. Vorobyov V.A., Komar A.G. Construction Materials. - M.: Stroyizdat, 1976. - S.177-178.

Claims (1)

Aggregate for decorative concrete products obtained by preparing a concrete mixture from Portland cement, quartz sand and aggregate, molding, curing for at least 28 days, followed by sawing the resulting products into plates or blocks and grinding their surface, characterized in that the aggregate is made of metal with cavity filled with colored cement-sand mortar with its subsequent curing.

Images