DE271247C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 806. GROUP

Lining material for concrete tanks in the form of panels.

Patented in the German Empire on October 6, 1911.

It is widely used as an acid-proof material for lining concrete containers acid-resistant, fusible mixtures of asphalt, paraffin, resins, etc. If one such acid-solid masses in the molten or semi-solid state directly. on the walls wants to attach the concrete container, it is necessary that the walls are absolutely dry and therefore a long time beforehand Drying processes are subjected, as on the one hand the moisture prevents the adhesion of the prevents hot mass, on the other hand, the caustic alkalis contained in the cement Saponifying presence of moisture, d. H.

have a destructive effect on clothing.

In order to remedy these evils, it has already been suggested to choose between the acid-resistant Layer and the concrete wall an insulating intermediate layer of sheet iron, roofing felt, porous masses, still air

and the like and must also be

■ like combinations in the form of finished panels are used with which the containers be lined. However, such measures sometimes require the use of Metallic reinforcements reaching into the concrete layer and the lining compound on both sides and have also proven to be poor in practice.

It has also been proposed to make the acid-resistant lining dimensions more firmly adhered to achieve, to produce the covering from a porous, cement-bound mass, which with the acid-resistant Melt is impregnated. However, there is also the disadvantage that the acid-resistant Lining compound is destroyed or attacked by the alkali of the cement, if the cement or concrete layer still contains moisture.

This disadvantage is eliminated according to the invention in that between the acid-resistant Protective layer and the container wall a preventing the penetration of moisture alkali-resistant intermediate layer is arranged, in addition, a prior drying of the container and the Use of mechanical fasteners is avoided. So it can also be the lining mass Immediately applied to the moist vessel wall together with the alkali-resistant intermediate layer or even at the same time are attached to the concrete body with the production of this, which not only saves a great deal of time and labor, but also a very firm, intimate and permanent connection to the concrete wall the lining mass is achieved.

According to the invention this is achieved by using plates or the like with two layers of physically the same or at least very similar, but chemically each other produces different behaving properties, one of which consists of an alkali-resistant Mixture of organic, fusible substances, which to achieve greater strength and to make it cheaper may contain inorganic fillers, while the second layer is a mixture of acid-resistant, meltable substances, which on the one hand the container contents must resist, on the other hand him in none

Claims (1)

May influence manner, for example not give off a smell and taste to the same allowed. However, as already mentioned, it is essential that the two layers are as identical as possible have physical properties so that an intimate, indissoluble connection is created. For this purpose, only those substances may be contained in both layers which are absorb each other in the molten state, i.e. let them mix with one another. The manufacture of such panels is done expediently in such a way that first of all a liquid mixture heated as high as possible of those products which are to form the alkali-resistant layer onto a rolled one Pour the sand underlay in a suitable thickness, where- .. through an intimate connection between the grains of sand '' is achieved with the alkali-resistant compound. The only purpose of this coating is to facilitate the connection with the concrete wall part by enlarging the surface. Of course, this purpose can also be achieved in any other known manner, for example by applying a corrugation, depressions. Grooves etc. after When these panels cool down, the acid-resistant top layer is now in the way applied to that, having a suitable liquid mixture at a temperature thereon pours, which is just enough to liquefy the first layer on the surface, whereby the intimate connection of the two layers through mutual mixing the contact surface is achieved. Of course, you can also proceed the other way round ^ d. H. first pour the acid-resistant layer, which in this case of course on a smooth surface, and then the alkali-resistant layer on top, the top of which is then provided with depressions, grooves or the like in the manner described can be. The size of the panels, their thickness, as well as the thickness of the two layers can of course be different depending on your needs. Suitable acid and alkali resistant Mixtures of organic, fusible products are known; however, the Mixing ratios are chosen so that the two layers are what required have the same physical properties. For example, one can call it alkali-resistant Layer the slab a mixture of asphalt, gutta-percha and using caustic soda from Use wool fat freed from the saponifiable components, including talc added as a filler can be. A layer of acid-resistant material that bonds well with this is obtained by melting it together of manila opal or any other resin with one of its low melting points Shares freed wood pitch and thickened linseed oil, with talc as a filler can be added. The lining of the concrete container with the so produced double-layer panels are now done in such a way that the panels are set directly into the formwork of the concrete wall and then only the concrete is tamped, or in such a way that the plates by means of Cement mortar can be applied to the finished concrete walls. The joints between the individual plates, which are expediently kept about ι cm wide, must then Poured in a known manner with the same masses from which the plates are made in such a way that first also the alkali-resistant layer and only on top the acid-resistant mass is poured in. This creates a completely uniform jointless lining, which is characterized by the fact that it consists of two physically consists of similar layers, but of which those with the concrete wall in contact standing alkali-resistant, the inner one is however resistant to the contents of the container. Pa τ ε ν τ - A ν s ρ R υ c η: Lining material for concrete containers in the form of plates or the like, marked by two firmly bonded layers of physically the same or similar properties, of which but the one that comes into contact with the concrete wall is made of alkali-resistant and the inner one is made of acid-resistant or resisting the contents of the container,. fusible organic substances is.