DE2751748A1 - Accurately laid dry floor finish - uses chipboard mfd. with cement-bound chips - Google Patents

Abstract

Mfr. of DRY floor finishes (opt. with insulating layer) provides for use of accurately located, closely spaced, thickness gauges so that there is no need for expensive thickness-compensating layers when the raw floor base is made. Chipboards whose resistance to diffusion of, and penetration by, water is low are used for preparing the load bearing layer. They are made with hydraulic binders pref cement, as chipboards contg. phenolic resin or urea-formaldehyde resin as binder are unsuitable owing to their high water diffusion and penetration resistance.

Description

Process for the production of dry

e ri c h e n with and without a Danish shift.

The well-known Trockeneutricharten use plasterboard as a base layer or glue-bonded chipboard, on which an insulating layer is usually glued is.

The main thing about plasterboard is that it is easily destructible, because they are pressure sensitive. Through point loading and wheelchairs, cardboard and Gypsum core destroyed. In addition, plasterboard is highly sensitive to moisture. When exposed to moisture, the gypsum core disintegrates and the cardboard turns into rot.

Glue-bonded chipboard panels have a relatively high diffusion + Water penetration resistance. This results in a thickness @ chi @ th of the plates can be very humid while the other thick layer is still relatively dry. This gives rise to diverging dimensional changes in the layers Use said chipboard very heavily, causing severe damage to the coverings caused.

The main advantage of dry screeds is that construction progress is not held up by required setting times. It also becomes essential less building moisture introduced.

There are also no harmful vapors such as e.g. at HeiBasphalt.

All dry strokes have one disadvantage in common that the Raw ceilings either have to be absolutely flat, or that before laying the dry screeds additional leveling layers are introduced.

The process therefore suggests, for example, in the manufacture of the raw ceiling at a distance of 1.5 m exactly measured height gauges on which the Concrete can be peeled flat.

Since height gauges are required anyway, the additional expense is door their greater number and accuracy are limited.

The process suggests this purpose on hollow body ceilings for flat steels or thick-walled rectangular pipes upright to be laid flat.

When docking is in place, U-profiles, for example, can be inserted into the formwork or Steel steps hammered in to the exact height in wooden blocks are placed.

After the concrete has been peeled off, the height gauges are removed Fugunfeu is a special feature of all dry slabs built in Problem because the joints are usually weak points.

With the usual tongue and groove training, the result is that on the Notch effects on the tongue as well as on the tongue side, which lead to breakage under load0 In addition, burrs are formed in the area g of ordinary butt joints, vodurch the floor coverings are damaged, yes even peeled off0 These inadequacies excludes the method according to the invention because a) tongue and groove are wedge-shaped are formed, b) the groove base forms a semicircle and c) the surfaces of the base layer 1 in the joint area on both sides by height-compensating, joint-sealing e.g. connecting straps 8 and consisting of construction adhesive based on cement-plastic 8 'are connected.

In addition, the inventive method includes different Panel thicknesses in the joint area from one-sided overload, because it also translates Hydraulic pressure pressed in construction adhesive fills any cavities.

In Fig. 1 and 2 tongue and groove designs are shown like this E.g., with ordinary chipboard. In Fig. 1 is also shown how structural breaks are caused by harmful notch effects.

Figs. 3 and 4 show examples of connecting straps on butt joints be arranged in the shape of triangle and dovetail.

In Figs. 5 and 6 it is shown how by the wedge-shaped formations the spring sides when joining a hydraulic translation for pressing effect of the adhesive.

Finally, in Fig. 7, an optimized joint design is shown in Scale 2: 1 shown.

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Claims (1)

Claims for protection Process for the production of dry screeds with and without an insulation layer. characterized in that to avoid costly height compensation layers Exactly measured height gauges at a short distance when producing the raw ceiling be arranged, and that for the production of the base layer 1 e.g. chipboard Their diffusion and water penetration resistance is low. Usual chipboard whose chips z.8. with phenolic resin or urea resin are suitable because of their relatively high diffusion and water penetration levels not. The method therefore provides for 1 chipboard for the base layer to use their chips with hydraulic binders, preferably with cement are bound and that the surfaces of the support layer 1 are particularly hard, such as this z.8. in the case of chipboard bonded with cement. Process according to Claims 1 and 2, characterized in that the flank formation 3 and 3 'of the tongue and groove connection not parallel, but is wedge-like. The tongue and groove formation is preferably carried out in a simple combination but can also be done in multiple groups. Process according to Claims 1 to 3, characterized in that the width limitation 5 of the spring 4 has the shape of a round and pointed wedge. Method according to Claims 1 to 4, characterized in that the groove base 7 of the groove 6 is designed in the shape of a semicircle in order to avoid a notch effect. Uerfahren according to claims 1 to 5, characterized in that the dust joint is designed as a connecting and thickness compensation tab 8. Process according to Claims 1 to 6, characterized in that the butt joint 9 on the top to avoid burr formation and for better Connection is tab-shaped. The cross-sections of the connecting straps are preferably rectangular executed, but can also be in the shape of a triangle or a dovetail exhibit. Process according to Claims 1 to 7, characterized in that when the spring 4 is inserted into the groove 6, a hydraulic translation results, which the adhesive lo with increased pressure through the flanks 3 and 3 to the connecting straps 8 and 8 'presses. Due to the hydraulic pressure, there is a solid in area 8 The support layer 1 is supported on both sides of the butt joint 9. At the same time, the pore structure of the insulation 2 in the joint area 11 adhesive pressed, which reduces the load-bearing capacity in the butt joint area of the insulation material is increased so that the desired compensation is brought about. The adhesive emerging at the top fills the joint 8 'with full joints. Excess adhesive is removed flat on the upper side with a spatula.