Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.
Patent
1996-03-14
1998-07-07
Graysay, Tamara L.
Hydraulic and earth engineering
Drainage or irrigation
Porous waterway, e.g., sand drain, etc.
521695, 5216914, 405 43, 405 36, E02D 3102
Patent
active
057758395
DESCRIPTION:
BRIEF SUMMARY
The present invention has for an object a protective waterproofing membrane particularly for exterior and/or interior coatings, of walls and pavings generally.
The invention, finds particular if not exclusive application among products destined to the building section, and in more detail in the installation of filled-in supporting structures, such as foundations.
In prior art the technical functional characteristics and the multifarious advantages that offer the protective membrane are known. These, especially recently, have practically replaced the somewhat empirical traditional methods of treating walls and pavings, as for example those impregnating surfaces composed of bituminous, tending predominantly to waterproofing.
As a result, said membranes, have found increasingly vast use solving, at least partly, problems that the preceding techniques could have created, which could have been, for example, a slow and difficult installation, insufficient waterproofing, the necessity to provide a drainage technique, with other disadvantages of functioning techniques which those noticeable commonly in the confrontations of a good part of the supporting structures directly in contact with the soil.
On the market it is also possible to verify that the greater part of the membranes, have characteristics decidedly common to each other. In first place, they are made in a semi-rigid plastic material, according to determined heights, to be, from one side conveniently adaptable to the surface to coat, and from the other commercialized in spools therefore easily moveable. In second place provides equidistant and complanate protrusions, distributed with uniformity and protruding if compared to the surface, as well as being made indifferently according to a section usually conic or semi-conic. Some types, can also provide rib stiffening, which in practice join vertically (in a wall coating), any protrusion. The application of the membrane on the interested surface must provide protrusions facing the wall, so obtaining an interspace having a thickness of at least equal height of said protrusions made on the membrane. Advantages of the interspace so obtained, consist in a good ventilation offering a good protection from humidity for the structures on the ground, realising at the same time an effective drainage system.
A further characteristic of the membranes, not less important than that of the preceding ones, consists in that, between sheet and adjacent sheet an overlap is possible, anchoring the respective end until obtaining a logic and complete continuity of the coating. The overlap in definitive, is possible thanks to the main configuration of protrusions which consent, overlapping itself, the insertion of one within a correspondent hollow made in contra-position from the other sheet so overlapped. Such techniques of fixed joint anchorage is known in various sectors, and one completes by- providing finishing accessories for the installation, which can consist in a closing profile of the longitudinal edge fixable to a wall and in provided fixing means of suitable washers or plugs, which hold to the wall and in provided fixing means the said membrane.
In above shown solutions, however different drawbacks are noticeable. In first place it can be affirmed that, generally, because of the type of coupling adopted it is not possible to reach a sufficient line will have connecting zones, in which both water and air can (Rufenacht) easily filter decreasing the protective effectiveness of the membrane. Furthermore, the different and inappropriate configurations of protrusions, do not consent to optimize the advantages of said membrane type. De-B-2947499 disclosed a protective membrane for modular coating of walls, of the type superimposable with an analogue for mechanical junction, obtaining the continuity of the coating, made in plastic material and comprising a central area of plurality of protrusions, all on the same side of each membrane, wherein every membrane has two opposite border joining areas provided with a series of m
REFERENCES:
patent: 4436779 (1984-03-01), Menconi et al.
patent: 4840575 (1989-06-01), Freese
patent: 4943185 (1990-07-01), McGuckin et al.
patent: 5044821 (1991-09-01), Johnson
patent: 5383314 (1995-01-01), Rothberg
Bronstein Sewall P.
Corless Peter F.
Graysay Tamara L.
Lagman Frederick L.
Tema Technologies & Materials S.R.I.
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