DE1251358B - Process for the production of a ceiling for runways, roads, bank revetments and the like - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN ^ MTW ^ PATENTAMT Int. Cl .:

EDITORIAL

EOIc

E02b

German class: 19 c - 7/30

Number: 1 251 358

File number: S 61775 V / 19 c

Filing date: February 14, 1959

Open date: October 5, 1967

The invention relates to a method for producing a blanket applied to a base for runways at airports, for streets, squares, terraces, bank revetments or for canal floors, using cement mortar and bituminized chippings.

In a known method of this type, an upper layer is applied to a lower layer of concrete applied with hydrocarbon binder (German Patent 902 384). At the after this The blanket made in the process can make the top layer soft. Water can also pass through the top Penetration of the layer, which can lead to the top layer becoming detached.

Also known is a method by which a better elasticity of the concrete is to be achieved (German patent 699120). According to this method, the aggregates are said to have a very high thin layer of bitumen and the so coated aggregates for concrete production, in the case of cement serves as a binder. However, the blanket made by this method is in terms of the waterproofness and durability in their upper range are not yet satisfactory.

The invention is based on the described disadvantages of the known methods avoid.

The solution to the problem is that a bituminized or tarred one on the substructure or gravel layer treated with another hydrocarbon-based binder applied and on this grit layer a cement mortar is distributed such a consistency that the Cement mortar in the gravel layer can penetrate to a limited depth and that then the Whole is condensed.

Appropriate further developments of the method are given in the subclaims.

The ceiling produced with this method has a greater density than in its upper area Blankets containing only one hydrocarbon binder]; it is therefore waterproof and robust against solvents such as kerosene or gasoline; their sensitivity to heat is low.

When producing a ceiling, a layer of chippings made of hydrocarbon-based binders and aggregates is allowed to penetrate such an amount of cement mortar that, after compaction, the cavities in the area concerned are filled with the mortar, the depth of penetration of the cement mortar differing from case to case. For the penetration depth for this, an average of 2 cm can be used to manufacture a ceiling for
Runways, roads, bank revetments, etc.

Applicant:

Salviam Societe Anonyme, Paris

Representative:

Dipl.-Ing. H. Missling, patent attorney,
Giessen, Bismarckstrasse. 43

Named as inventor:

Arthur Joseph Jean Baptiste Ρίηςοη, Paris;

Jacques Henri Lucien Fournier,

Niort, Deux-Sevres (France)

Claimed priority:

France of February 18, 1958 (758 506)

accept. There are three conditions to be observed for the implementation:

1. The application of the cement mortar must be carried out prior to any compaction of the lower part of the Ceiling-forming gravel layer take place, but immediately after their application to their base. The application is done either by hand or with a machine, but without use of a tamper.

2. The flowability of the cement mortar depends on the permeability of the base layer chosen. In the case of concrete mixes based on bitumen with increased density (of the order of of 95%), the cement mortar must be very fluid so that it penetrates well into the gravel layer can. On the other hand, when using coarse aggregates, due to which the density can be less than 80%, one becomes one Use less liquid cement mortar in order to avoid that this over the whole thickness of the covering penetrates into this, which leads to a ceiling that is too hard and also such Amount of cement mortar would require that the process becomes too costly.

3. The solid constituents of the cement mortar must be fine enough so as not to be To hinder penetration into the grit layer. The cement mortar may need additives can be added.

709 650/55

Claims (8)

Patent claims: 1. Process for the production of a surface for runways which is applied to a base at airports, for streets, squares, terraces, bank revetments or for canal bottoms, using of cement mortar and bituminized chippings, characterized in that one of bituminized or chippings tarred or treated with another hydrocarbon-based binder applied upright grit layer and a cement mortar of such consistency on this grit layer is distributed so that the cement mortar can penetrate into the gravel layer to a limited depth and that afterwards the whole thing is condensed. 2. The method according to claim 1, characterized in that after the compaction of the Cover the cement slurry remaining on the surface is removed. 3. The method according to claim 1, characterized in that the cement mortar except Cement and water components such as finely powdered filler and additives of a known type can be added. 4. The method according to claim 1, characterized in that the mortar of the ceiling coloring Means are added. 5. The method according to claim 1, characterized in that after the penetration of the Mortar in the surface of the chippings a waterproof coating on the ceiling is applied. 6. The method according to claim 5, characterized in that the water-impermeable coating is colored. 7. The method according to claim 1, characterized in that after the application of the With the mortar, soluble alkaline silicates can be applied to the ceiling surface. 8. The method according to claim 7, characterized in that to accelerate the implementation of soluble alkaline silicate in insoluble calcium silicate before applying liquid, Lime containing silicate is added. Considered publications:
German Patent Nos. 699 120, 902 384; French patent specification No. 668 948. 709 650/55 9.67 © Bundesdruckerei Berlin