SikaGrout®-428 FS
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SikaGrout®-428 FS is a non-shrink, non-metallic, cementitious precision grout powered by ViscoCrete technology. SikaGrout®-428 FS is designed to achieve high early strength and exceptional ultimate strengths at a fluid consistency. A structural, precision grout, SikaGrout®-428 FS can be placed from plastic to fluid over a temperature range.
- Quick rate of strength gain
- Multiple fluidity with one material
- Outstanding performance in fluid state
- Excellent fluidity, sufficient time for placement
- Non-metallic, will not stain or rust
Usage
- For quick turnaround applications, when rate of strength gain is a significant consideration.
- Grouting of railing posts, foundations, windmills, compressors, etc.
- Non-shrink grouting of machinery and equipment, base plates, sole plates, precast panels, beams, columns and curtain walls.
- Applications where a non-shrink grout is needed for maximum effective bearing area.
- To transfer optimum load.
- For grouting rebar, bolts, dowels and pins, etc.
Advantages
- Quick rate of strength gain
- Multiple fluidity with one material
- Outstanding performance in fluid state
- Excellent fluidity, sufficient time for placement
- Non-metallic, will not stain or rust
Packaging
65 lb (29.5 kg) bag
Color
Gray powder
Product Details
APPROVALS / STANDARDS
- Meet ASTM C-1107 (Grade C)
- Shows positive expansion as per ASTM C-827
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
Effective Bearing Area
| > 95 % | (ASTM C-1339) |
Compressive Strength
| Plastic | 40 °F | 73 °F | 90 °F |
| 5 hours | 750 psi (5.2 MPa) | 2,500 psi (17.2 MPa) | 6,000 psi (41.4 MPa) |
| 6 hours | 1,000 psi (6.9 MPa) | 3,500 psi (24.1 MPa) | 7,000 psi (48.3 MPa) |
| 1 day | 4,000 psi (27.6 MPa) | 7,000 psi (48.3 MPa) | 9,000 psi (62.1 MPa) |
| 3 days | 5,500 psi (37.9 MPa) | 9,500 psi (65.5 MPa) | 11,000 psi (75.8 MPa) |
| 7 days | 7,500 psi (51.7 MPa) | 12,000 psi (82.7 MPa) | 12,000 psi (82.7 MPa) |
| 28 days | 11,000 psi (75.8 MPa) | 13,000 psi (89.6 MPa) | 13,000 psi (89.6 MPa) |
| Flowable | 40 °F | 73 °F | 90 °F |
| 5 hours | 500 psi (3.4 MPa) | 2,000 psi (13.8 MPa) | 5,000 psi (34.5 MPa) |
| 6 hours | 750 psi (5.2 MPa) | 3,000 psi (20.7 MPa) | 5,500 psi (37.9 MPa) |
| 1 day | 3,500 psi (24.1 MPa) | 7,000 psi (48.3 MPa) | 7,000 psi (48.3 MPa) |
| 3 days | 5,000 psi (34.5 MPa) | 9,000 psi (62.1 MPa) | 9,500 psi (65.5 MPa) |
| 7 days | 7,000 psi (48.3 MPa) | 11,000 psi (75.8 MPa) | 11,000 psi (75.8 MPa) |
| 28 days | 10,500 psi (72.4 MPa) | 12,500 psi (86.2 MPa) | 12,500 psi (86.2 MPa) |
| Fluid | 40 °F | 73 °F | 90 °F |
| 5 hours | < 200 psi (1.4 MPa) | 1,000 psi (6.9 MPa) | 4,000 psi (27.6 MPa) |
| 6 hours | < 500 psi (3.4 MPa) | 3,000 psi (20.7 MPa) | 6,000 psi (41.4 MPa) |
| 1 day | 3,250 psi (22.4 MPa) | 7,500 psi (51.7 MPa) | 8,000 psi (55.2 MPa) |
| 3 days | 6,000 psi (41.4 MPa) | 8,500 psi (58.6 MPa) | 8,500 psi (58.6 MPa) |
| 7 days | 7,500 psi (51.7 MPa) | 10,000 psi (69 MPa) | 10,000 psi (69 MPa) |
| 28 days | 10,000 psi (69 MPa) | 12,000 psi (82.7 MPa) | 12,000 psi (82.7 MPa) |
Flexural Strength
|
Splitting tensile strength
| 28 days | > 1,000 psi (6.9 MPa) |
Tensile Adhesion Strength
| 1 day | 1,800 psi (12.4 MPa) |
| 7 days | 2,200 psi (15.2 MPa) |
| 28 days | 2,500 psi (17.2 MPa) |
* Mortar scrubbed into substrate at 73 °F (23 °C) and 50 % R.H.
Pull-Out Resistance
| 40 °F | 73 °F | 90 °F | |
| 1 day | 200 psi (1.4 MPa) | > 400 psi (2.8 MPa) | > 450 psi (3.1 MPa) |
| 7 days | 400 psi (2.8 MPa) | > 500 psi (3.4 MPa) | > 500 psi (3.4 MPa) |
| 28 days | 450 psi (3.1 MPa) | > 550 psi (3.8 MPa) | > 550 psi (3.8 MPa) |
Expansion
| 40 °F | 73 °F | 90 °F | |
| 1 day | Positive | Positive | Positive |
| 7 days | Positive | Positive | Positive |
| 28 days | Positive | Positive | Positive |
Rapid Chloride Permeability
| 28 days (60 Volts) | < 1,000 C |
Application
Mixing Ratio
| Plastic | Flowable | Fluid |
| 6.5 pts (3.1 L) | 7.0 pts (3.3 L) | 8 pts (3.8 L) |
Layer Thickness
| Min. | Max. | |
| Neat | 1/4" (6.4 mm) | 2" (50.8 mm) |
| Extended | 1" (25.4 mm) | 6" (152.4 mm) |
Flowability
| 40 °F | 73 °F | 90 °F |
| < 45 sec | > 30 sec | > 30 sec |
Product Temperature
65–75 °F (18–24 °C)
Ambient Air Temperature
> 40 °F (4 °C)
Substrate Temperature
> 40 °F (4 °C)
Pot Life
~ 10 minutes
As the temperature will affect the pot life, application temperature:
-
Above 73 °F (23 °C) will reduce the fluidity
-
Below 73 °F (23 °C) will extend the fluidity
Set Time
| Initial Set | >30 minutes |
| Final Set | >45–60 minutes |
Coverage
0.50 ft3 (0.02 m3) per bag
(Coverage figures do not include allowance for surface profile and porosity or material waste)
MIXING
- Make sure all forming, mixing, placing, and clean-up materials are on hand.
- Add the appropriate amount of water (depend on the desired flow) of clean potable water (approx 70 °F) into a suitably sized and clean mixing container, using a calibrated measuring jug, or similar, to ensure strict control of the water content (do not over-water).
- Add 1 bag while continuing to mix with a low-speed drill (400-600 rpm) and Sika mixing paddle or a jiffy paddle or in an appropriate mortar mixer.
- Once all the powder has been added, mix for approximately 3 minutes, until a lump-free and uniform consistency is achieved.
- Do not over mix.
- For warmer temperatures use cold water and for colder temperatures use warm water.
- For cold temperature start with 7/8 of a gallon and add remaining 1/8, only if needed for fluid consistency.
- Refer to ACI 306 Guidelines when there is a need to place this grout in cold & hot temperatures.
EXTENSION WITH AGGREGATES
- For deeper applications, SikaGrout®-428 FS may be extended with 3/8" (9.5 mm) pea gravel (plastic and flowable consistencies only).
- The aggregate must be non-reactive (reference ASTM C-1260, C-227 and C-289), clean, well graded, Saturated Surface Dry (SSD), have low absorption and high density, and comply with ASTM C-33 size number 8 per Table 2.
- Variances in aggregate may result in different strengths.
- The addition rate is 30 lb (13.7 kg) of aggregate per bag. It is approximately 2.4 gal (9.1 L) by loose volume of aggregate.
APPLICATION
- Within no more than 10 minutes after mixing, place grout into forms in normal manner to avoid air entrapment.
- Mixed grout in mass will result in faster than expected setting times.
- Plan jobs accordingly so that the grout can be placed right after mixing.
- Vibrate, ram grout as necessary to achieve flow or compaction.
- SikaGrout®-428 FS must be confined leaving minimum exposed surface.
- After grout has achieved final set, remove forms, trim or shape exposed grout shoulders to designed profile.
- Wet cure for a minimum of 3 days or apply a water based curing compound which complies with ASTM C-309 on exposed surfaces.