Sikadur® Crack Fix
LOW-VISCOSITY AND HIGH-STRENGTH EPOXY INJECTION RESIN, SEALER AND ADHESIVE
Sikadur® Crack Fix is a two-component, 100 % solids and solvent-free, moisture-tolerant, low-viscosity, and high-strength multi-purpose epoxy resin.
- Convenient, easy to use single tube cartridge; fits standard caulking gun
- No mess, self-mixing through nozzle
- Low viscosity; allows material to penetrate and seal fine, hairline cracks
- Deep penetration and tenacious crack bonding in structural concrete
- Moisture tolerance: for “can’t dry” cracks and surfaces
- High early-strength development and five times stronger than concrete
Usage
- Low pressure injection of cracks in structural concrete, masonry, wood, etc.
- Grouting around bolts, dowels, pins and fixings
- Thin layer, high strength adhesive for bonding hardened concrete
- Gravity feeding of cracks in horizontal concrete, masonry, wood, etc.
- Sealing interior slabs and exterior above grade slabs
Advantages
- Convenient, easy to use single tube cartridge; fits standard caulking gun
- No mess, self-mixing through nozzle
- Low viscosity; allows material to penetrate and seal fine, hairline cracks
- Deep penetration and tenacious crack bonding in structural concrete
- Moisture tolerance: for “can’t dry” cracks and surfaces
- High early-strength development and five times stronger than concrete
Packaging
180 mL (6 US fl. oz) Pre-Pack cartridge, 12 per case.
Colour
Clear, amber
Product Details
APPROVALS / CERTIFICATES
Conforms to current ASTM C881 and AASHTO M-235 specifications
Shelf Life
2 years in original, unopened packaging.
Storage Conditions
Store dry at temperatures between 4 °C and 35 °C (39 °F to 95 °F). Condition product at temperatures between 15 °C and 24 °C (59 °F and 75 °F) before using.
Viscosity
Approx. 375 cps
Compressive Strength
| 4 °C (39 °F)* | 23 °C (73 °F)* | 32 °C (89 °F)* | |
| 4 hours | - | - | - |
| 8 hours | - | 1.2 MPa (180 psi) | 22 MPa (3 200 psi) |
| 16 hours | - | 31.1 MPa (4 500 psi) | 43.5 MPa (6 300 psi) |
| 1 day | - | 41.4 MPa (6 000 psi) | 62.8 MPa (9 100 psi) |
| 3 days | 27.6 MPa (4 000 psi) | 62.1 MPa (9 000 psi) | 72.5 MPa (10 500 psi) |
| 7 days | 46.9 MPa (6 800 psi) | 75.9 MPa (11 000 psi) | 72.5 MPa (10 500 psi) |
| 14 days | 71.1 MPa (10 300 psi) | 82.8 MPa (12 000 psi) | 72.5 MPa (10 500 psi) |
| 28 days | 85.6 MPa (12 400 psi) | 89.7 MPa (13 000 psi) | 72.5 MPa (10 500 psi) |
* Product cured and tested at the temperatures indicated
Modulus of Elasticity in Compression
| 2 000 MPa (2.9 x 105 psi) | 7 days |
Tensile Strength
| 48.3 MPa (7 000 psi) | (ASTM D638) 7 days |
Shear Strength
| 33.1 MPa (4 800 psi) | (ASTM D732) 14 days |
Heat Deflection Temperature
| 49 °C (120 °F) | (ASTM D648) 14 days, Fibre stress loading =1.8 MPa (264 psi) |
Water Absorption
| 0.27 % | (ASTM D570) 7 days 24 hour immersion |
Application
Mixing Ratio
A:B = 2:1 by volume
Pot Life
| Approx 25 minutes | (60 g) |
Consumption
One (1) cartridge yields ~175-180 mL (~10.7-11 in3) of usable resin.
SUBSTRATE PREPARATION
Surfaces must be clean, sound and preferably dry. Cracks or voids to be grouted or the concrete to be sealed or bonded may be dry or damp, but must be free of standing water. For optimum performance in terms of penetration and adhesion, surfaces are best dry. Remove dust, laitance, grease, curing compounds, impregnations, waxes, foreign particles and loose friable materials using suitable techniques, including sandblasting or power wire brushing. Surfaces, cracks and voids must then be cleaned, by suitable means, such as blowing clean with oil-free compressed air or vacuuming to remove all penetration or bond inhibiting material.
Cartridge set-up
Remove twist-cap and port plug from the top of the cartridge. Press one of the ‘flow restrictors’ into the opening. Insert a static mixing nozzle (as supplied) through the twist cap and attach to the threaded section. Insert the Sikadur® Crack Fix cartridge into a good quality caulking gun. Proceed with a purge of any air possibly entrapped in the system by pointing the gun upwards and squeezing the trigger. In order to ensure a uniform blend of the resin components, a second squeeze will be needed to purge some mixed resin before starting application. The extracted material will be discarded.
Note: Do not use the purged material as it is unlikely to be blended and therefore will not perform accordingly.
CLEAN UP
Uncured material can be removed with Sika® Epoxy Cleaner. Cured material can only be removed mechanically.
FAQ
No, this product is not suitable and recommended for these applications.
It is not suitable for use to seal exterior slabs on grade.
It can be used in Gravity feeding of cracks in horizontal concrete, masonry, wood…
- To pressure inject cracks - Set appropriate injection ports. Bond ports and seal the face of the crack with Sika® AnchorFix®-1 or Sikaset® Plug. When the epoxy adhesive and crack seal has cured, inject Sikadur® Crack Fix with slow, steady pressure. When completed, the injection ports can be knocked off and the adhesive and crack seal ground off to mask the works.
- To anchor bolts, dowels and pins in horizontal surfaces - Annular space around bolt should not exceed 3 mm (1/8 in). Depth o embedment is typically 10-15 times the bolt diameter. Grout with neat Sikadur® Crack Fix, injecting the material into the back of the hole and working upwards, followed by placing the fixing and rotating it into the filled hole so as to prevent air pockets.
- To seal slabs - Spread neat Sikadur® Crack Fix over the slab, using a squeegee or roller and allow the material to penetrate. Remove excess material to prevent a surface film forming. Seal interior slabs and above grade, exterior slabs only.
- To gravity feed cracks - Seal the underside of the slab if the crack reflects right through the depth of concrete. Inject neat Sikadur® Crack Fix into v-notched crack and continue placement until the crack is completely filled.
A wet glistening surface with standing water is not suitable for the application of the material. For optimum performance in terms of penetration and adhesion, surfaces are best dry. Surfaces must be clean, sound and preferably dry. Cracks or voids to be grouted or the concrete to be sealed or bonded may be dry or damp but must be free of standing water.
The minimum surface and air temperature during application is +4 °C (39 °F), and maximum substrate temperature during application is +35 °C (95 °F).
One (1) cartridge yields approximately 175-180 mL (10.7-11 in3) of usable resin.
