SU876431A1 - Method of moulding building articles - Google Patents

Description

(54) METHOD OF FORMING CONSTRUCTION PRODUCTS

I

FIELD OF THE INVENTION The invention relates to the production of building products and structures made of composite material, for example, fiber reinforced concrete mass.

There is a known method of forming building products by sequential delivery of a concrete mix and fiber flj.

However, this method does not allow changing the volume content of the fibers in the product during the molding process, which is necessary for various designs of the products .1

The purpose of the invention is to regulate the fiber content over the product section.

This goal is achieved by the fact that in the method of forming construction products by sequentially feeding the concrete mix and fiber, the latter is cut and laid out during the feeding process by moving its cutting points relative to each other in the direction perpendicular to the cross section of the product.

The manufacture of products by the proposed method is as follows.

The concrete mixture is filled with a supply tank, for example a bunker. The wire in the coils is mounted on the holders of the fiber making devices, each of which is mounted on its own intermediate frame.

The device includes .J feed rollers, unwinding and guiding means, rotating and fixed knives.

 Each intermediate frame with a fiber-making device mounted on it is fixed, for example, on a paver's frame that can be moved across the concrete front. From the concrete paver's hopper, the concrete mixture is metered and laid out in a mold. At the same time, wire from the coil is served in

5 zone cut. By the pressing force of the friction pair formed by the driving and driving feed rollers, the wire is fed through the guiding means to the cutting zone. Cutting is performed by rotating and stationary knives. At the same time, the process of fabrication of the fiber is combined with its dosing. The fiber is cut, dosed, and laid out using its own fall (the non-moving point of the fall path is the cut point).

For a given technological speed, the splits fnbru are placed on the plane of the snap-in by a zone whose width is equal to twice the fiber length, and by the density in the transverse direction of the zone characterized by the Gauss curve.

To change the volume content of the fiber, the cutting points are moved relative to each other across the width of the product, grouped into several points in a row, concentrated or thinned overlap zones.

Using this method, it is possible to change the volume content of the fiber, i.e., to arbitrarily change the density of reinforcement over the product area, within one molding cycle, and to promptly ensure the transition to the production of another product. In addition, this method can be used to form products with reinforced sections (door, window openings, etc.) located on a part of the section width

They have been made, as well as with areas filled with concrete mixture that does not contain fibers (for example, layered concreting of wall panels with peripheral contour reinforcement), etc.

Claims (1)

Invention Formula A method of forming construction products by sequentially feeding the concrete mix and fiber, characterized in that, in order to adjust the fiber content over the product cross section, the fiber in the feed process is cut and laid out by moving its cutting points relative to each other in the S direction perpendicular to the product section. Sources of information taken into account during the examination 1. V. Rabinovich. Concrete dispersed reinforced with fibers. M., VNIESM, 1976. with. 20-25.