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.
SikaGrout 428 FS is a high-performance, fast-setting, non-shrink cementitious grout designed for structural precision grouting applications. Supplied in a 65 lb bag, this gray powder grout features Sika’s ViscoCrete technology to deliver high early strength and exceptional fluidity for easy placement. It meets ASTM C-1107 Grade C standards and exhibits positive expansion per ASTM C-827. Ideal for machinery base plates, columns, rebar, anchors, and structural elements, SikaGrout 428 FS achieves ultimate performance in fluid, flowable, or plastic consistencies across a wide temperature range. Whether you're working on windmills, precast panels, or foundation elements, it provides maximum load transfer and durable support.
Property | Value |
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Packaging | 65 lb (29.5 kg) bag |
Appearance | Gray powder |
Compressive Strength (28 days) | Up to 13,000 psi (ASTM C109) |
Tensile Adhesion Strength | 2,500 psi at 28 days (ASTM C882 Modified) |
Effective Bearing Area | Greater than 95% |
Flow Time | 30–45 seconds (ASTM C-939 Modified) |
Working Time | ~10 minutes at 73°F (23°C) |
Set Time (Initial/Final) | >30 min / >45–60 min (ASTM C266) |
Coverage | 0.50 ft³ per bag |
Shelf Life | 12 months (unopened, dry storage) |
What type of fluidity can I expect from SikaGrout 428 FS?
It can be mixed to plastic, flowable, or fluid consistencies depending on the application needs using the same material.
Can I extend this grout for deeper pours?
Yes. It may be extended using 3/8" pea gravel for deeper applications when in plastic or flowable consistencies.
Is it suitable for patching or overlay?
No. SikaGrout 428 FS is not designed for patching or unconfined overlay use. It must be confined on all sides.
Brand | Sika |
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Manufacturer | Sika |