SikaTop®-123 Plus
Two-component, polymer-modified, cementitious, non-sag mortar plus Sika FerroGard® 901 penetrating corrosion inhibitor
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SikaTop®-123 Plus is a two-component, polymer-modified, Portland cement-based, fast-setting, non-sag mortar. It is a high performance repair mortar for vertical and overhead surfaces and offers the additional benefit of Sika FerroGard® 901, a penetrating corrosion inhibitor included in its formulation.
- Extremely low shrinkage proven by four industry standard test methods.
- High compressive and flexural strengths.
- Increased freeze/thaw durability and resistance to deicing salts.
- Increased density - improved carbon dioxide resistance (carbonation) without adversely affecting water vapor transmission (not a vapor barrier).
- Enhanced with Sika FerroGard® 901, a penetrating corrosion inhibitor - reduces corrosion even in the adjacent concrete.
- Compatible with coefficient of thermal expansion of concrete - Passes ASTM C 884.
Usage
- On grade, above and below grade on concrete and mortar.
- On vertical and overhead surfaces.
- As a structural repair material for parking structures, industrial plants, walkways, bridges, tunnels, dams and ramps.
- Approved for repairs over cathodic protection systems
Advantages
- Extremely low shrinkage proven by four industry standard test methods.
- High compressive and flexural strengths.
- Increased freeze/thaw durability and resistance to deicing salts.
- Increased density - improved carbon dioxide resistance (carbonation) without adversely affecting water vapor transmission (not a vapor barrier).
- Enhanced with Sika FerroGard® 901, a penetrating corrosion inhibitor - reduces corrosion even in the adjacent concrete.
- Compatible with coefficient of thermal expansion of concrete - Passes ASTM C 884.
Packaging
| Component A | 1 gal (3.68 L) jug - 4/carton |
| Component B | 44 lb. (20 kg) bag |
Color
Gray powder
Product Details
APPROVALS / STANDARDS
- USDA certifiable for incidental food contact
- ANSI/NSF Standard 61 potable water approved compliant.
- Tested per ICRI Guidline NO. 320.3R for inorganic repair material data sheet protocol
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 Component ‘B’ from moisture. If damp, discard material
Protect Component ‘A’ from freezing. If frozen, discard.
Compressive Strength
| 1 day | 3,000 psi (20.7 MPa) |
| 7 days | 4,000 psi (27.6 MPa) |
| 28 days | 6,000 psi (41.4 MPa) |
Modulus of Elasticity in Compression
| 2.94 x 106 psi | (ASTM C-469) |
Flexural Strength
| 28 days | 1,500 psi (10.3 MPa) |
Splitting tensile strength
| 28 days | 900 psi (6.2 MPa) |
Tensile Adhesion Strength
| 28 days | 2,000 psi (13.8 MPa) |
* Mortar scrubbed into substrate at 73 °F (23 °C) and 50 % R.H.
Pull-Out Resistance
| 28 days | 500 psi (3.4 MPa) Substrate failure |
Shrinkage
| 28 days | 1x1x11-1/4’’ specimen | 0.05 % |
| 28 days | 3x3x11-1/4’’ specimen | 0.038 % |
Ring test
| > 70 days | |
| Average Max Strain | - 36 μstrain |
| Average Stress Strain | 4.92 psi/day |
| Potential for Cracking | Low |
Baenziger block
| 90 days | No cracking |
Freeze-Thaw Stability
| 300 cycles | 98 % |
Rapid Chloride Permeability
| 28 days | < 500 C |
Application
Fresh mortar density
| 132 lb/ft3 (2.2 kg/l) | (ASTM C-138) |
Layer Thickness
| Min. | Max. |
| 1/8 " (3 mm) | 1.5" (38 mm) |
Product Temperature
65–75 °F (18–24 °C)
Ambient Air Temperature
> 45 °F (7 °C)
Substrate Temperature
> 45 °F (7 °C)
Set Time
| 15 - 40 min. | (ASTM C-266) |
Final set time
| < 60 min. | (ASTM C-266) |
Finishing time
20–60 minutes
Note: All times start after adding Component ‘B’ to Component ‘A’ and are highly affected by temperature, relative humidity, substrate temperature, wind, sun and other job site conditions.
Coverage
0.39 ft3 (0.01 m3) per bag
(Coverage figures do not include allowance for surface profile and porosity or material waste)
MIXING
- Pour Component ‘A’ into mixing container.
- Add Component ‘B’ while mixing continuously.
- Mix mechanically with a low-speed drill (400–600 rpm) and mixing paddle or mortar mixer.
- Mix to a uniform consistency, maximum 3 minutes.
- Manual mixing can be tolerated only for less than a full unit. Thorough mixing and proper proportioning of the two components is necessary.
APPLICATION
- SikaTop®-123 Plus 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.
Multiple lifts
- Where multiple lifts are required score top surface of each lift to produce a roughened surface for next lift.
- Allow preceding lift to reach initial set, 30 minutes minimum, before applying fresh material.
- Substrate should be Saturated Surface Dry (SSD) with clean water prior to application. No standing water should remain during application.
- Scrub fresh mortar into preceding lift.
- Allow mortar or concrete to set to desired stiffness, then finish with wood or sponge float for a smooth surface.
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 a water based* compatible curing compound (ASTM C-309).
- 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.