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Sealing of joints and cracks in sewers and shafts
Different methods are used for canal and sewer rehabilitation. Sealing injections restore the watertightness of the structural elements. The life of shafts, canals and sewers can be significantly extended by using putties and coating materials of high chemical resistance.
Sewer rehab is often implemented in municipal drainage systems. Frequently these drainage systems are historic structures exposed to more and more strain due to the increasing urban development. This causes the interstitial and surface water to gradually escape from the grain structure of the foundation soil leading to subsidence. The subsidence results in the rearrangement of stonewalled vaults, giving rise to cavities and leaks in the structure. In such cases a primary objective of canal and sewer rehabilitation is to fill the cavities and to repair the leaks.
Sewer repairs also comprise shaft repairs and pipe repairs. Damaged sewage pipes can be permanently repaired using the short liner method. WEBAC products are perfectly suited for this purpose.
PU Injection Foam Resins
PU injection resins (PU foam) are used for temporarily stopping water. Thanks to their fast and strong increase in volume they are also suitable in the event of highly pressing water.
PU Injection Resins
Polyurethane resins are characterized by their high flexibility and good adhesion. This is why cracks injected with PU injection resins remain leak proof also in case of crack width modifications and exposure to dynamic stress.
Acrylate gels are characterized by their very low viscosity and are highly recommended for sealing structural elements with ground contact (gel injection).
EP Putties and Adhesives
WEBAC EP putties are used for installing surface packers and patching cracks when implementing crack injections.
PU Casting Foam Resins
PU casting foam resins are perfectly suited for filling voids and cavities. They stand out due to their high strength and fast curing process.
WEBAC 1C and 2C injection pumps offer the right injection technology for all applications in sewer repair.