Sika SikaGrout 428FS 65lb Bag 188027

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

$43.56

Availability: In stock ( 197 Available )

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SKU

18912

Sika SikaGrout 428 FS – 65 lb High Performance Fast-Set Grout

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.

Key Features:

Fast-setting with rapid strength development
Non-shrink, non-metallic, cement-based formulation
Outstanding fluidity with extended placement time
Multiple consistencies from plastic to fluid using one material
Positive expansion characteristics
Does not stain or rust—ideal for aesthetic installations
Excellent load transfer and bearing area coverage
Meets ASTM C-1107 (Grade C) and C-827 standards

Applications:

Grouting machinery, base plates, columns, and structural elements
Fast-turnaround grouting of windmills, compressors, and foundation supports
Rebar, bolt, dowel, and pin anchoring
Precision grouting where high early strength is critical
Precast panel and curtain wall grouting

Technical Specifications:

Property	Value
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)

Frequently Asked Questions:

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.

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