Mineral material
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Mineral material
In case of crack repair with cement suspension and cement paste, cracked structural elements are repaired by means of non-positive injection. The cracks are injected so that no more water can penetrate after the injection process is completed. The injection material forms a protection against the penetration of aggressive substances and prevents corrosion of the reinforcement. The load-bearing capacity of the structural elements is restored by the frictional connection of the crack flanks.
Aims of application
- Sealing and filling of cracks, hollows and voids
- Creation of frictional connection of cracked building components
- Creation of a connection guaranteeing tensile and compression strength
- Masonry consolidation and stabilisation
Filling material
- Injection mortar
- Cement paste
- Cement suspension
Demands on injection packer
- The material of the packers (parts of packer) must be appropriate for the used injection material
- Safe retention in the structural element during the injection at pressures depending on the injection method
- Corrosion resistance of the parts remaining in the building
- Possibility of shutting off
- Cross section adjusted to flow properties of injection material
- No reduction of cross section in the packer and connection system
Suitable objects
- Residential buildings, industrial structures
- Buildings of masonry and concrete
- Natural stone buildings
- Historic and listed buildings
- Civil engineering and water engineering
- Canal-, harbour-, and river engineering
Bore packer
Range of application
- Dry and humid structural elements
- For the filling of cavaties
- Low- and high pressure injection into structures
Demands on the injection packers
- Compatibility of materials (packer components) with fillers used
- Reliable fixing in the component at the process-related injection pressures
- Corrosion resistance of the parts remaining in the structure
- Possibility of shutting off
Placing of the injection packers
- Packer distance depends on component thickness (½ component thickness = packer distance)
- Drill alternately at an angle of 45° to the crack to hit the crack in the middle of the component (depending on the object)
- Clean (e. g. with compressed air) and prepare the boreholes, depending on the filler set and clamp packer (in the case of dry cracks, prewet crack flanks)
- Close crack with insulating material, leave crack end free for venting and level control, at the highest point for vertical cracks
- Inject the packer until the crack filler emerges from the next packer, reinject each packer within the processing time of the crack filler
- After the injection the injection packers are removed or non-corrosive parts can remain in the building (agreement with the builder required)
- Seal boreholes
Plugging
- The insulation prevents the filler from escaping during injection
- Repair of leaks with fast-reacting substances
Extracting tool for lamella drive-in packer
Combine your extracting tool
In order to remove lamella drive-in packers from the construction element there are different extracting tools available, varying to the type of the packers. The extracting tool is screwed in or on the lamella drive-in packer and the impact weight is moved powerful into the pull-out direction. Step by step the packer is removed from the construction element.- Basis: Pull rod
- Weights available individually between 1 kg and 1.4 kg
Advantages
- For the extraction of different types of packers
- All adaptors can be combined with both pulling devices according to the application
- Reusable product
- Easy handling
Extracting tool
Application
Adhesive Packer
Advantages
- Injection with low- and high pressure method
The adhesive packers resist to high injection pressures depending on the adhesion with the soil.
- Saving of time and material
» The sealing material is spread on the crack surface
Application range
- On non-wet surfaces
- Structural elements with dense reinforcement
- Pre-stressed concrete
- For a width of crack from approx. 0.2 mm with filling material cement suspension
Placing of the adhesive packers
- Roughen the surface on both sides of the crack depending on structural element, remove any debris or loose particles, dust etc.
- Distance between packers depends on thickness of structural element (normally: thickness of structural element = distance between packers)
- Keep the injection channel free by driving a greased steel pin into the crack
- Seal the crack with sealing material, but stop at the end of crack for deseration and control of filling level
- Remove all steel pins and screw a locking tappet on the the packer, open it and start injection
- Inject from bottom to top
- Close locking tappet when air and filling material is coming out of the adjacend packer
- Continue injection with the next packer
- Re-inject each packer within the pot life of the packer
- Once the injection material is hardened remove the packer and sealing material
- Recondition surface
Information
- A test injection on the object is recommended before application
- Pre-wet the crack or void before starting injection with mineral filling material
Injection device
general
The self-injecting device is used when the injection process has to be carried out at low pressure (approx. 1 bar) and over a longer time period to ensure a successful result (e. g. with very fi ne cracks).
Material to be used
- Cement suspension
- Epoxy resin
- Polyurethane
Advantages
- Injection without machines
- Simple working principle
- Easy visual monitoring of consumption
- Several injection devices can be used at the same time at various places
- Can be used overhead
General operation
- Hook the tension springs to the packer
- Draw in injection material using the material cylinder
- Insert material cylinder into the cone
- Place the pressing unit on the piston
- The injection process starts, the material consumption is indicated at the scale
- Repeat fi lling process if necessary
ADHESIVE PACKER
- Mark the distance between packers
- Grease a steel pin and drive it into the crack
- Bonding with Klebfix
- Apply adhesive (sealing material) on the adhesive surface of the packer
- Place packer
- Seal crack surface up to 3 – 5 cm from the end of crack
- Bonding with hot glue
- Apply adhesive (sealing material) on the adherend of the packer and slip the packer over the steel pin and press the packer on the concrete
- Seal possible open cracks between the injection devices with adhesive
- Remove steel pin from packer
MULTI TILE PACKER
- Mit dem Spezialbohrer Ø 6 mm in die Fugenkreuze der hohlliegenden Fliesen bohren
- Remove drill dust
- Only for mineral material: pre-wet drill hole
- Clamp multi tile packer in the drill hole
SCREED SCREW PACKER
- Make a drill hole Ø 6 mm through the hollow screed using a special drill
- Remove drill dust
- Clamp screed screw packer in the drill hole
