SikaRepair®-223
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SikaRepair®-223 is a one-component, early strength gaining, cementitious, patching material for vertical and overhead repair of concrete.
- Easy-to-use
- Suitable for exterior and interior applications
- Easily applied to clean, sound substrate
- High early strengths
- Increased abrasion resistance
- Increased freeze/thaw resistance
- Not flammable
Usage
- On grade, above, and below grade on concrete and mortar
- As a repair material for vertical and overhead concrete surfaces
Advantages
- Easy-to-use
- Suitable for exterior and interior applications
- Easily applied to clean, sound substrate
- High early strengths
- Increased abrasion resistance
- Increased freeze/thaw resistance
- Not flammable
Packaging
| SikaRepair®-223 | 50 lb. (22.7 kg) bag |
| SikaLatex® (R) | 1 gal (3.8 L) jug, 4/carton |
| 5 gal (19 L) pail |
Color
Gray powder
Product Details
Shelf Life
12 months from date of production if stored properly in original, unopened and undamaged sealed packaging
Storage Conditions
Store dry at 40–95 °F (4–35 °C)
Protect from moisture. If damp, discard material
Compressive Strength
| Water | SikaLatex® R | |
| 1 day | > 3,500 psi (24.1 MPa) | > 4,000 psi (27.6 MPa) |
| 7 days | 6,000 psi (41.4 MPa) | 6,200 psi (42.7 MPa) |
| 28 days | > 7,500 psi (51.7 MPa) | > 8,000 psi (55.2 MPa) |
Flexural Strength
| Water | SikaLatex® R | |
| 28 days | 850 psi (5.9 MPa) | 1,200 psi (8.2 MPa) |
Splitting tensile strength
| Water | SikaLatex® R | |
| 28 days | 550 psi (5.8 MPa) | 700 psi (4.8 MPa) |
Slant Shear Strength
| Water | SikaLatex® R | |
| 28 days | 1,800 psi (12.4 MPa) | 2,000 psi (13.8 MPa) |
* Mortar scrubbed into substrate (73 °F (23 °C) and 50 % R.H.)
Application
Mixing Ratio
3/4 - 1 gal. (2.8 - 3.8 L) of liquid
Layer Thickness
| Min. | Max. | |
| Water and diluted SikaLatex® R | 1/4" (6 mm) | 1-1/2" (38 mm) |
| Undiluted SikaLatex® R | 1/8" (3 mm) | 1-1/2" (38 mm) |
Product Temperature
65–75 °F (18–24 °C)
Ambient Air Temperature
> 45 °F (7 °C)
Substrate Temperature
> 45 °F (7 °C)
Pot Life
~ 15 minutes
As the temperature will affect the pot life, application temperature:
-
Above 73 °F (23 °C) will reduce the pot life
-
Below 73 °F (23 °C) will extend the pot life
Finishing time
~20 to 60 minutes
Coverage
0.41 ft3 (0.01 m3) per bag
(Coverage figures do not include allowance for surface profile and porosity or material waste)
MIXING
- With water: Start with 3/4 gal. (2.8 L) of water added to the mixing vessel. Add 1 bag of SikaRepair®-223 while continuing to mix with a low-speed drill (400-600 rpm) and mixing paddle or in an appropriate mortar mixer. Add up to another 1/4 gal (1 L) of water to achieve desired consistency. Do not over-water.
- With SikaLatex® R: Pour 3/4 gal. (2.8 L) of SikaLatex® R into the mixing container. Slowly add powder, mix and adjust as above.
- With diluted SikaLatex® R: SikaLatex® R may be diluted up to 5:1 (water: SikaLatex® R) for projects requiring minimal polymer modification. Pour 3/4 gal. (2.8 L) of the mixture into the mixing container. Slowly add powder, mix and adjust as above.
APPLICATION
- At the time of application, surfaces should be SSD with no standing water.
- Mortar must be scrubbed into the substrate, filling all pores and voids. Force material against edge of repair, working toward center.
- After filling repair, consolidate, then screed.
- Material may be applied in multiple lifts. The thickness of each lift must be 1/4" (6 mm) minimum. Where multiple lifts are required score top surface of each lift to produce a roughened surface for next lift. Allow preceding lift to reach final set, 30 minutes minimum before applying fresh material. SSD of the lift with clean water. Scrub fresh mortar into preceding lift.
- Allow mortar to set to desired stiffness, then finish with wood or sponge float for a smooth surface, or texture as required.
CURING TREATMENT
- As per ACI recommendations for Portland cement concrete, curing is required.
- Moist cure with wet burlap and polyethylene, a fine mist of water or Sika® Antisol®-250 W*.
- Curing compounds adversely affect the adhesion of following lifts of mortar, leveling mortar or protective coatings.
- Moist curing should commence immediately after finishing. Protect freshly applied mortar from direct sunlight, wind, rain and frost.
* Pretesting of curing compound is recommended.