SikaGrout 428 FS is a precision-grade, high-performance cementitious grout powered by ViscoCrete technology designed to deliver reliable structural support in demanding industrial grouting applications. Engineered for environments where machinery is exposed to impact, vibration, and dynamic loads, this fast-setting, non-shrink formulation provides consistent performance and long-term durability. With exceptional flowability across three consistency levels — plastic, flowable, and fluid — it easily fills tight clearances and complex geometries beneath machine bases, sole plates, or structural supports without extensive surface preparation.
This grout reaches 13,000 psi compressive strength in just 28 days and allows for rapid strength gain, helping reduce costly downtime in critical installations. Its non-metallic composition eliminates staining and corrosion concerns, while the positive expansion properties ensure alignment integrity and dimensional stability over time. Ideal for fast-paced maintenance operations and new construction, SikaGrout 428 FS simplifies installation while maintaining industry-grade mechanical performance under demanding conditions.
✨ Looking for a different cement grout?
We’re here to answer all of your questions about cement grout, or any of the other products we carry.
Key Features of SikaGrout 428 FS
- Quick Rate of Strength Gain
Achieves 2,500 psi in 5 hours at 73°F and reaches 13,000 psi ultimate strength in 28 days. - Multiple Fluidity with One Material
Can be mixed to plastic, flowable, or fluid consistencies using the same product for versatile applications. - Outstanding Performance in Fluid State
Maintains high strength even in fluid consistency, reaching 12,000 psi at 28 days. - Excellent Fluidity and Placement Time
Provides sufficient working time (~10 minutes) with superior flow characteristics for complete void filling. - Non-Metallic Composition
Will not stain or rust, eliminating corrosion concerns in structural applications. - Positive Expansion Properties
Shows positive expansion per ASTM C-827, ensuring tight contact and maximum load transfer. - Temperature Versatility
Can be placed effectively from 40°F to 90°F with adjusted water temperatures.
Recommended Applications of SikaGrout 428 FS
SikaGrout 428 FS is engineered for professionals tasked with grouting critical structural elements where high strength, dimensional stability, and rapid turnaround are essential. Its versatile consistency options and temperature range make it especially suitable for machinery installations, structural connections, and precision alignment applications where downtime must be minimized and long-term performance maintained.
Ideal Applications Include:
-
- Grouting of railing posts, foundations, and windmill installations
- Non-shrink grouting of machinery and equipment baseplates
- Sole plates, precast panels, beams, and columns
- Curtain wall installations requiring maximum effective bearing area
- Grouting rebar, bolts, dowels, and pins for structural connections
- Applications requiring optimum load transfer capabilities
- Quick turnaround projects where rate of strength gain is critical
Technical Specifications – SikaGrout-428 FS
High performance, fast setting, non-shrink, cement grout for critical industrial applications.
13,000 PSI Ultimate Strength
>40°F Application Temp
ASTM C-1107 Grade C Certified
~10 min Pot Life
ASTM C-1107 Grade C Certified
Fast Setting, High Early Strength
Non-Shrink, Non-Metallic
Multiple Fluidity Options
Frequently Asked Questions
What consistencies can SikaGrout 428 FS achieve?
It can be mixed to plastic (6.5 pts water), flowable (7.0 pts water), or fluid (8 pts water) consistencies depending on application requirements using the same material.
How long before the grout can support loads?
Under typical conditions (73°F), it reaches 2,500 psi in 5 hours for plastic consistency and continues gaining strength to 13,000 psi in 28 days.
Can it be extended for deeper applications?
Yes. It may be extended with 3/8″ pea gravel at 30 lb per bag for applications up to 6 inches thick when used in plastic or flowable consistencies.
What type of surface preparation is required?
The surface must be clean, sound, and saturated surface dry (SSD). Remove deteriorated concrete, oil, grease, and bond-inhibiting materials. High-pressure water blast or mechanical preparation is recommended.
What is the working time and set time?
Working time is approximately 10 minutes at 73°F. Initial set occurs after 30 minutes, with final set between 45-60 minutes under standard conditions.
What standards does it meet?
SikaGrout 428 FS meets ASTM C-1107 Grade C requirements and shows positive expansion per ASTM C-827 testing standards.
Need Help Choosing the Right Cement Grout?
We’re here to answer all of your questions about cement grout solutions, product compatibility, and application techniques. Get expert guidance for your specific project needs.
Professional Grade Products
Quality Customer Service
Technical Support
