weber.tecEP injection resin 

weber.tec EP injection resin LV is a two-component resin for crack injection systems. The resin will structurally bond the fractured sections and seal fine cracks against ingress of water and/or aggressive agents.

weber.tec EP injection resin T is a moisture-tolerant gel epoxy resin for structural repairs to cracked concrete and masonry. The resin will repel dampness in the cracks and bond the broken sections.

Uses:

Low viscosity injection resin (LV)

• Fine cracks to concrete and masonry
• Repair crack widths from 0.2 mm - 2 mm
• Structural repairs to concrete and masonry
• Application temperature range 5°C to 40°C
• Fine cracks to suspended concrete floors and decks
• Concrete bridges and highway structures
• Car parks
• Plastic shrinkage and drying shrinkage cracks in new construction

Thixotropic injection resin (T)

• Structural repairs to concrete and masonry construction
• Repair crack widths from 0·5 mm - 8 mm
• Settlement crack repair in masonry buildings
• Repair of cracks to cavity walls
• Refurbishment of old buildings and strengthening work to car parks
• Application temperature range 5°C to 40°C
• Concrete bridges, retaining walls and highway structures
• Crack injection to liquid retaining structures and treatment works

Low viscosity injection resin

• Injects into cracks down to 0.2 mm width and structurally bond hairline cracks
• Good penetration into the crack due to low viscosity
• Easy-to-use two-component mix
• Can be applied in damp environments
• Non-shrinkage properties ensuring excellent bond durability

Thixotropic injection resin

• Will bond to damp substrates allowing greater flexibility in site use
• Can be injected from one side only
• Gel consistency allows injection to floors, walls and soffits - only one product required
• High physical strength
• Non shrinking properties with durable bon

The crack must be thoroughly clean, dry and all loose debris removed. Blow out the surface of the crack to remove any dust.

Bond injection nipples onto the surface of the crack using weber.tec filler. For thixotropic injection resin, bond at intervals to coincide with the depth of penetration.

Seal the remainder of the exposed crack surface, between the nipples, with weber.tec filler and allow upto 1 hour to dry before injection.

For low viscosity resin, ensure the other side of the cracked structure is sealed to prevent resin squeezing out during the injection process

Mix the resin and hardener in a mix ratio by volume of 4:1 (4·5:1 for thixotropic resin), resin/hardener, and place into an injection cartridge.

Mix only enough material that can be used within the useable pot life time.

Attach the plastic injection hose over the nipple with a jubilee clip, opening restrictor clamp and gently pump the resin through the hose. Inject the resin until either the desired amount of resin is injected or resin is detected in the next nipple. Close the restrictor clamp, remove the injection hose and plug the injected nipple. Move the injection hose up to the next nipple and repeat the injection process progressing along the crack line until all the nipples are injected.

Always start at the bottom of the crack so air is displaced upwards through the crack as work proceeds. Setting time is 40 minutes at 20°C; the set time will be delayed in colder weather and will accelerate in temepratures above 20°C.

Allow 24 hours for curing, then the plugged nipples may be broken off using a hammer and cold chisel. Any depressions or making good can be carried out with weber.tec filler.

To achieve a smooth finish to the surface remove any excess weber.tec filler using a grinding wheel.

Summary of injection process
1. Throughly clean the crack surface.
2. Fix the injection nipples with weber.tec filler.
3. Space the nipples according to the depth of penetration.
4. Seal the remainder of the crack surface weber.tec filler, ensure all exit routes are sealed.
5. Mix the injection resin, load cartridge and attach injection hose.
6. Inject the resin through the nipple and progressively work up the crack.
7. Wait 24 hours, then take off injection nipples and make good.

Clean tools with weber.tec solvent 3.<b/>