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B-STING® joint injection needle

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B-STING® joint injection needle

The B-STING® joint injection needle enables simple and safe sealing of sealing joints in tunnels, especially in segmental tunnels. The joint is sealed by screwing in the B-STING® with a cordless screwdriver and injecting an acrylate or polyurethane-based filler. The B-STING® remains in the component and ensures a permanent seal. There is no need for time-consuming drilling work during application.

NEW is the use of the B-STING® joint injection needle for sealing leaking expansion joints.

B-STING Fugeninjektionsnadel
B-STING® joint injection needle

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Minimal invasivE - maximal EFFECTIVE

advantages

  • There is no loss of material by screwing the tip in the sealing joint; the outlet openings lateral remain clean and a free flow of filling material is ensured
  • The B-STING®  joint injection needle will be surrounded by the strong material, so that it is kept and sealed at the same time

Materials used

  • Acrylate gel
  • Injection resin

Sealing of leaking
Segment joints

In this process, a B-STING® joint injection needle is screwed into the segment seal via the segment joint using a cordless screwdriver and penetrates the segment seal. An acrylate or polyurethane-based filler is injected into the segment joint via a flat-head gel nipple and the injection tube screwed onto the B-STING®. However, due to the smaller joint width, it is usually necessary to drill out the longitudinal or annular joints of the segments in order to be able to insert the injection pipe with the B-STING® joint injection needle into the joint. As a rule, a drill hole with a diameter of approx. 18 mm is sufficient for this. The B-STING® joint injection needle remains in the segment seal and seals the hole permanently.

Sealing the joint in the case of a leaking segment joint using a B-STING® joint injection needle

Sealing of leaking
Expansion joints

In this process, a B-STING® joint injection needle is screwed into the expansion joint through the sealing element using a cordless screwdriver. A flat-head gel nipple and the injection pipe screwed onto the B-STING® are used to inject into the side of the joint facing the water. After the injection process, the injection pipe is removed while the B-STING® remains in the component and seals the drill hole permanently and water pressure-tight.

Screw the B-STING® joint injection needle through the seal using a cordless screwdriver (a)

Then inject the expansion joint (b)

WORKING STEPS


➀ Drill down to the sealing element (This does not apply to expansion joints).

➁ Installing the injection pipe

➂ Fit socket wrench

➃ Screw in with a cordless screwdriver

➄ Inject

➅ Inject until fi ller emerges from the next B-STING® joint injection needle

➆ Completed injection, B-STING® joint injection needle remains in the component
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