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

Features & Benefits:

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 Bond

Technical data:

The following test results were obtained in laboratory conditions at 20°C

	Low viscosity resin (LV)	Thixotropic resin (T)
Useable pot life:	45 – 60 minutes	45 – 60 minutes
Gel time:	80 minutes	105 minutes
Mix ratio by volume: resin	4	41/2
Mix ratio by volume: hardner	1	1
Specify gravity:	1.09 kg/litre	1.20 kg/litre
Compressive strength, 7 days	75 N/mm2	65 N/mm2
Tensile strength, 7 days	20 N/mm2	22 N/mm2
Flexural strength	55 N/mm2	45 N/mm2
Bond strength: dry concrete	2·8 N/mm2	2·5 N/mm2
(failure of concrete)  wet concrete	2·5 N/mm2	2·4 N/mm2
Slant shear strength	61 N/mm2	60 N/mm2
Modulus of elasticity in flexure	4·5 kN/mm2	4·0 kN/mm2
In compression	2·75 kN/mm2	2·50 kN/mm2
Coefficient of thermal  expansion	5.98 x 10–15 mm/mm/°C	5.50 x 10–15 mm/mm/°C
Viscosity Brookfield spindle 3 speed 20	250 cP	2800 cP

Summary of injection process:

• Throughly clean the crack surface.
• Fix the injection nipples with weber.tec filler.
• Space the nipples according to the depth of penetration.
• Seal the remainder of the crack surface weber.tec filler, ensure all exit routes aresealed.
• Mix the injection resin, load cartridge and attach injection hose.
• Inject the resin through the nipple and progressively work up the crack.
• Wait 24 hours, then take off injection nipples and make good.

Weber.tec EP Injection Resin / Resin injection
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