Injection Grouting Hoses

Injection hoses are used as a planned joint insert for sealing construction joints, butt joints or block joints in structural engineering, civil engineering and tunnel construction.

TECHNO-Hose systems show their advantages not only in heavily reinforced components or in complicated geometries: In addition to conventional joint sealing systems, they can also serve as an additional “insurance policy” for leaks in the joint that occur years later, which can otherwise only be sealed with much greater effort.

In simple terms, in an injection hose system, a hose perforated with special slots is applied to the area of the subsequent joint using clamps before the concrete is poured; the ends of the hose are closed and stored so that they are still accessible after pouring.

After the shrinkage process of the concrete has been completed and the first settlements have occurred, a joint has formed around the injection hose, which enables the even distribution of the injection material. The special arrangement and shaping of the slots prevent cement slurry from penetrating the injection channel during casting.

During the so-called grouting, special crack filler is pressed into the tube. The injection pressure causes the filler to pass through the slits in the hose directly into the joint to be sealed. In the process, it also fills any faults and cavities in the concrete structure that may be due to compaction errors and finally reacts to form a permanently sealing mass: The joint is sealed.

TECHNOSEAL offers you high-quality sealing materials for the pressurised water-tight injection of injection hoses. All the materials presented below have proven themselves over many years.

In addition to the TECHNO-Hose standard variant with an inner diameter of 6 mm, which can be grouted with acrylate gel and is mainly used in building construction, there is also a tunnel variant with an inner diameter of 10 mm,  an injection hose can be grouted several times, so that another injection can be carried out in the event of moisture penetration occurring later.

• Active sealing system
• Enables filling of cracks and cavities within the component
• Sealing and renovation in one
• Injection lengths up to 30 m depending on the type of hose