DE2008700A1 - Sealing strips - Google Patents

Description

"Sealing strip ¹¹

The invention relates to a sealing strip for joints between concrete slabs or the like.

Known seals consist, for example, of ■ lead strips of about 30 cm wide on both sides of the expansion joint nailed to the concrete and to which the sealing covering is applied.

However, the seal can also consist of rubber strips., for example from ITeoprene or BütylT. However, they all have these seals have disadvantages, which can be attributed to the following facts:

- If lead is used, there is a risk of cracking because lead is known to be hard and can break.

Although these difficulties occur when using Rubber not on, but the rubber does not adhere very well

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on the sealing covering, which generally consists of bitumen. The rubber will therefore come off finally completely off the topping.

The invention is based on the knowledge that the reason fe for the poor adhesion between rubber and bitumen it can be seen that the rubber has too great an elasticity in relation to the bituminous mass.

Under the action of a tensile force, the detachment takes place ■ gradually without a certain degree of adhesion can be achieved.

The invention is based on the object of avoiding the disadvantages mentioned.

According to the invention, this object is achieved by a glass fabric strip with a low coefficient of expansion, P the core of which is impregnated with an elastomer such as neoprene and in which at least one, but preferably both sides are coated with petroleum bitumen.

This reduces the elasticity of the rubber, so that such types of rubber reinforced with glass fabric are excellent Have adhesive properties to bitumen that are not lost even over time.

In an expedient embodiment, the glass fabric is

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woven diagonally, on-saro-gs ^ made and under. the action of less than 4-5 ° to the longitudinal axis' Deformable tensile forces. This allows the Displacements of the plates occurring shear forces, take .. ■ ■ '_.

Furthermore, it is advantageous if the petroleum bitumen is obtained by direct distillation and at 25 ⁰ Gund

2 "■ ■ ■" of a coating of 4 kg / m. ^L \ - mm 'penetration depth

having. ■.

The invention thus provides a sealing strip has been created, consisting of one made by glass fabric or G-lasfaserti reinforced Teop'ren, its elasticity is reduced by these glass fibers, the flexibility of which, however, remains unaffected.

The new sealing strip has the following properties

etc.

- _ _. ■ - A Glasgexireb_e_ made from threads (developed

speaking of a deformable Gevrebe like-for example

V ...._. '■ __; _ wise satin, satin monstrueux or tricot) will ..

' in the factory in commercial "V / eise mit Neopreil"

impregnated. '.. "' -.- ■

- »The product obtained in this way has a highly reinforced rubber core and two bituminized surfaces. -> "■■"

■ ... / 4. BATHROOM OHIGINAL

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Example 1; A fabric, najolich "satin monstrueux", with a glass weight of 400 g / m 2 is soaked in a conventional manner with neoprene rubber. This is followed by a coating with petroleum bitumen in a ratio of 4 kg / m ² , softening point at 10O 0 O, penetration depth at ⁰

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Example 2; A glass fabric made on the basis of diagonally woven o with a glass weight of 250 g / m is coated with the same neoprene rubber and with the same bitumen «

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ORKSiNAL INSPECTED 009849/123 A

Claims (1)

Jf ecu., Patent claims Sealing strips for joints between concrete slabs ο, like.j characterized by a glass fabric strip with low coefficient of expansion i its core with a Elastomer such as neoprene is impregnated and in which at least one, but preferably both sides with Petroleum bitumen coated sj.nd. - - - Yes Sealing strip according to claim 1, characterized net that the glass fabric is diagonal, woven, made on the basis and under the j action of under 45 ° to the longitudinal axis: tensile forces deformable is. ! - · ■■■ ■ ■ I Sealing strip according to claim 1, characterized in that that the petroleum eua bitumen through direct Distillation is obtained and fe «i 25 ° 0 and a coating vop. 4 kg / a 4 mm Sindringong depth Joöß Dipl _e -Ing. Gram iu ■ ". '■ / ?. ■ *" 001149/1231