DE647759C - Protective ceiling and wall against explosive projectiles for shelters, protective rooms, etc. - Google Patents

Description

Protective ceiling and wall against explosive projectiles for shelters, shelters etc. Armor plates are generally used to protect against projectiles, bombs and the like made of special types of steel or reinforced concrete walls of the appropriate thickness Structures, etc. used. Buildings made in this way aim to unite the storey To oppose as much resistance as possible and to avoid penetrating through. Depending on the requirements, experience to date has shown such a thing Construction more or less expensive. Besides, it didn't suit everyone either Requirements that are made to protect the occupants of this structure, etc. would have to; because under certain circumstances the explosives, which, for example, signify Concrete masons in the explosion of the projectile; arise and are scattered, a great danger in itself.

Other proposals were made in the manufacture of bituminous To make use of the experience gained by road surfacing. In road construction are predominantly mineral substances, e.g. B. rockfall, gravel, grit, sand and the like, to such an extent mixed with bitumen that an unyielding, the stresses of traffic Cover egg arises. Here the bitumen is only the cement substance. Such mixtures were used to make bullet catchers. As bullet trap were plates made of tar, sawdust and oil were also used. There If tar and oil produce a liquid mixture, sawdust must be used for the production of panels be used in predominant quantities.

Other suggestions - which include the manufacture of protective armor _ go there, those using rope-like spied wood wool and wire ropes, possibly also metal chips and an asphalt stone mass as a binder to press high pressure to plates. Here, too, it is a matter of masses, which are predominantly interspersed with solid components.

The resistance of the known blankets is based essentially on the strength of the incorporated, spun or otherwise compacted substances, such as B. wood wool, wire, metal shavings or stone and gravel. The effect is the same essentially . that of the concrete ceilings mentioned at the beginning; it can in b: ezug Perhaps satisfying on strike, on the other hand is the resistance to Insufficient explosive effect. Such protective covers etc. @ obtained through the impact of the projectiles Cracks, cracks, etc. and are thus destroyed in their resistance.

The observation has now been made that shock-proof and explosion-proof ceilings and walls for shelters, shelters and the like can be produced with great advantage using asphalt which is solid but tough at normal temperature or similar petroleum residues, without rock or oil residues at the same time. rigid layers of solid materials are incorporated. These substances are easily deformable without admixtures and therefore have no intrinsic properties Firmness on. Since they are in this -1 Fundamentally differentiate view from the hitherto unknown 'masses, their' suitability was quite surprising. Their effect differs fundamentally from the building materials previously used. While these act precisely because of their strength, it is precisely their flexibility that is decisive for the materials used in accordance with the invention. This is of particular advantage for damping the effect of the explosion. Since these are building materials that appear solid at normal temperature, but are not dimensionally stable and sometimes have poor flowability, a thick layer of bitumen or asphalt or the like is covered on the sides in each case Mistake; If the covers are horizontal, a lower panel is sufficient. The cladding could itself be made from the well-known bullet-proof building materials, e.g. B. made of cement or reinforced concrete in a smaller thickness. In this way, the new design can be combined with the known Bauw eiste and thus achieve new effects. It is also possible to use known building materials and bitumen in alternating layers, the layer thickness being dimensioned according to the intended purpose.

Without changing the character of the crowd, you can too irregularly interspersed with steel filings by putting the latter loosely into the molten Pouring bitumen mass. This achieves a certain level of springiness, which the Blasting effect even further. In addition, an excellent Achieve dissipation and distribution of heat.

Other essentially fibrous components, such as. B. Asbestos, Slag wool and glass wool, which can be added to the bituminous mass are suitable to reduce flowability without detrimental to their toughness to influence.

The new construction has the significant compared to the previously known Advantage that the projectile is slowed down strongly and that the explosion is shatterproof runs.

Claims (1)

PATENT CLAIMS: i. Protective ceiling and wall against explosive projectiles for shelters, shelters, etc., characterized by one or more layers a bitumen that is solid at ordinary temperature but counts and that is free of the mineral substances commonly used in road construction, such as gravel, sand and stone dust. z. Protective cover and wall according to claim i, characterized in that the bitumen for the purpose of cushioning, steel turnings are incorporated in irregular bulk. 3. Protective cover and wall according to claims i and z, characterized in that the bitumen essentially fibrous components, such as. B. Asbestos, flaky wool and glass wool, be added, which reduce the flowability of the bitumen.