DE2321408A1 - SELF LEVELING AND SELF LEVELING PLASTIC / CEMENT MORTAR - Google Patents

Description

Dr. F. Zumstein Sr. - Dr. E. Assmann Dr.R.Xoo ..; isbi: r..tr ■ Diol.Phyr.R HHzbauer

D-. * F. Γίιτη-Λβίη j ir.

Patent attorneys ΟΊΟΙ / ΠΟ

8 Munich 2, Bräuhausstrasse 4 / III ZOZ l4Uo

Oleag AG, Zurich

Self-leveling and self-leveling plastic / cement mortar

The invention relates to a self-leveling and self-leveling one Plastic / cement mortar.

Floor coverings made of cement, stone wood, mastic asphalt or rolled asphalt are mostly used to improve the surface properties, provided with an additional coating, a so-called seal. The following are grounded from such a covering Features required:

- wear resistance

- freedom from dust

- Chemical resistance, especially to gasoline and oil.

The covering material used should be self-leveling when used be and after the application in different layer thicknesses within a useful period without cracking cure evenly.

So far, either self-leveling synthetic resin flow mortar or multi-layer plastic dispersion filler coverings have been used for this purpose used. In the case of synthetic resin flow mortar coverings, those on polyester, polyurethane, epoxy or Acrylic resin base known. For multi-layer putty coverings hitherto mixtures of polymer emulsions or dispersions with fillers and possibly with cement have been used. the

309850/0819

232ΗΌ8 I.

Synthetic resin flow mortar coverings are considered to be self-leveling Systems with a layer thickness of 1 to 5 mm are used. Pie The layer thickness of the filler coverings is usually 0.5 to 30 mm.

The known thin-bodied aqueous systems harden with a Layer thickness of 1 mm is sometimes no longer sufficient. Systems, which still show a satisfactory degree of hardening with this layer thickness have a tendency to shrink and thereby to the formation of cracks. .

Two-component systems cure sufficiently, but they are after mixing only for a limited time workable; in addition, they can "cause damage to health. Such coverings are sensitive to changes in temperature and ambient humidity and costly. This also applies to the dispersion filler coverings, which are used in the Layer thicknesses of 1 to 2 mm are also expensive and also labor-intensive.

The object of the invention was therefore to provide a self-leveling, self-leveling To create flowing mortar without cracking hardens evenly and completely and is economical to use.

The invention therefore relates to a self-leveling and self-leveling plastic / cement mortar, which is characterized by the following composition: - _t

8 to 16 % polymer; .
16 to 32 % water;

8 to 24 % Portland cement; 0.1 to 5 % inorganic pigments and 40 to 60 % quartz sand with a grain size of 0.1 to 3 now.

309850/0819

The polymers used are preferably polymeric esters, such as polyvinyl acetate or polyacrylates, or rubber, are used. That Polymer is two-dimensional catfish in the shape of an approximately 50-inch shape aqueous dispersion, which is then mixed with the other components.

The plastic / cement mortar according to the invention is self-leveling and self-leveling. It hardens completely and evenly with layer thicknesses between 0.5 and ^ 0.0 mm, without Shrinkage behavior, i.e. crack formation from - It is economical to use and is not harmful to health in handling Associated with risks.

The excellent properties of the new plastic / cement mortar results from the specific ratio of the individual components to one another, in particular the polymer to the water.

When using the plastic / cement mortar according to the invention can the liquid mass with a laying comb in one layer in the desired thickness on a clean and pressure-resistant, possibly a pre-impregnated or leveled surface can be applied. By rolling off the freshly laid covering a regular surface structure can be achieved with a spiked roller. By evaporating part of the water and setting of the cement with the remaining water and the film formation of the plastic dispersion creates a more resistant Flooring. So far it has not been possible to produce such layer thicknesses with the properties mentioned under one-off Can be applied to self-leveling systems.

The new covering can be used, for example, in industrial and residential construction, in school buildings, warehouses, for renovating old floors and used for air raid shelters.

309850/0819

example

A previous Adhesive primer with diluted synthetic resin dispersion approx.

200 g / m applied. The following was the new self-leveling Covering system with installation comb in a one-time application applied with a dry layer thickness of J5 mm and with a spiked roller unrolled for ventilation. The topping was composed as follows:

Synthetic resin dispersion 9Λ% (calculated as 100 %

Dry matter)

Water 28.2 %

Portland cement l6.9 %

Pigments 0.7 %

Sand 44.8 %

100.0 %

3098 SO / 0819

Claims (2)

232U08 claims 1. Self-leveling and self-leveling plastic / cement mortar, characterized by the following composition: 8 to 16 " % polymer; 16 to 32 % water; 8 to 24 <fo portland cement; . 0.1 to 5 % inorganic pigments and 4o to 60 % quartz sand with a grain size of 0.1 to 3 mm? 2. Using the self-leveling and self-leveling Plastic / cement mortar for producing a floor covering, characterized in that egg "in such Amounts are applied so that a covering with a layer thickness of 0.5 to 30 * 0 mm is created. 309850/0819