Application Brochures - Curtain Injection
12Pages

Curtain Injection

Curtain Injection

Contents This brochure deals with the post-construction surface sealing of structural components in ground contact by means of curtain injection. WEBAC injection gels are suitable for the post-construction sealing of inaccessible structural components in ground contact exposed to moisture without digging. A sealing effect is obtained by putting into place a gel curtain behind the structure to be protected by means of pressure injection. The gel curtain durably prevents water and moisture from penetrating the building structure. NOTE Please observe all existing regulations and the...

Sealing with Injection Gels Buildings can be severely damaged by pressing water, fluctuations in the ground water level and surface water. Damaged masonry Leaks in structural components in ground contact such as e.g. masonry can be caused by lacking or inadequately designed external sealants, aging processes of existing sealants, fluctuating ground water levels or movements within the structural component. Water penetrates through cavities, joints and defective building sealants and soaks the building structure. Climatic fluctuations, especially alternating frost and thaw, lead to further...

Damage Diagnosis Building State Analysis Prior to the injection procedure, an analysis of the condition of the building and the subsoil is required. The resulting information on the moisture status, the adjacent soil layers and the salt contamination serve to determine the feasibility of the sealing measure, the spacing of the drill holes and the material consumption to be expected. Tasks of professional planning Especially during the reconstruction of traffic structures, careful and qualified planning by a professional planner is required. The planner must be able to prove on the basis of...

WEBAC Products Acrylic gel WEBAC 240 • Are characterized by their very high elasticity WEBAC 240 is an injection gel designed for making sealing surfaces (curtains) in foundation soil in direct contact with the structural component or within the existing building structure. • Remain dimensionally stable in water-vapor saturated atmospheres (soil moisture or equilibrium moisture content in the masonry). In case of climatic fluctuations, WEBAC Gels can reversibly absorb and discharge moisture Due to the modified, polymer-reinforced components in the WEBAC 240 modular modular system, WEBAC 240...

WEBAC Products Injec­ ion pumps t The air-operated, 2C pump WEBAC IP 2K-F1 is used for the application of acrylate gels. The two injection material components are introduced to the mixing head via separate hoses. The actual mixing process takes place here with a static mixer. ® A separate flush pump serves to clean the mix­ ing head with water. A compressor with an air volume of 300–400 l/min is required for operating the pump. WEBAC IP 2K-F1 pump is also available with a measuring unit for monitoring the flow rate and the pressure limit. The respective data can be evaluated and documented...

Mixing of the Components Component A Coloring of injection gels • The containers of component A are provided according • WEBAC injection gels can be colored with WEBAC to the required mixing ratio • Empty the smaller A2 container (and the A3 container, if applicable) completely into the larger A1 container • Mix immediately while pouring until homogeneous F200 to monitor the water displacement, the water‘s mixing with the gel, the material distribution and to detect any gel leakage • To color the injection gel, mix the injection gel with approx. 1 % of the blue colorant WEBAC F200...

Sealing/Backfilling by Means of Curtain Injection When sealing structures by means of gel injections, the structure is drilled through from the inside and a gel curtain is put into place behind the structure to be protected by carrying out a pressure injection (curtain injection). This new sealing level reduces the permeability of the subsoil, so that the structure can dry properly. The evaluation of the building state analysis provides information on the feasibility of the sealing measure, the spacing of the drill holes and the material consumption to be expected. The drill holes are...

Sealing/Backfilling by Means of Curtain Injection Active principle of a curtain injection into masonry for making a sealing gel curtain in the ground Positioning and standard distances of drill holes Final work Secondary injection Upon completion of the gel injection, remove the packers and remove all gel from the drill holes/drill hole walls down to approx. 10 cm depth. Then close the drill holes with suitable mineral building material. It may be necessary to implement accompanying measures. Provide adequate ventilation to ensure the exchange of damp air. If necessary, install condenser...

Brochure Curtain Injection 02/15 © WEBAC-Chemie GmbH

WEBAC-Chemie GmbH Fahrenberg 22 22885 Barsbuettel/Hamburg, Germany Tel. +49 40 67057-0 · Fax +49 40 6703227 info@webac.de · www.webac.de www.webac-grouts.com