SikaGrout 528 SF is a precision-engineered, non-shrink cementitious grout featuring a unique two-stage shrinkage compensating mechanism designed to deliver reliable structural support in demanding grouting applications. Enhanced with undensified silica fume for exceptional permeability resistance, this high-performance formulation provides consistent performance and long-term durability in confined spaces. Its special blend of shrinkage-reducing and plasticizing agents compensates for volume changes in both plastic and hardened states, ensuring dimensional stability without the risk of cracking or settlement.
This grout achieves 8,000 psi compressive strength at 28 days and demonstrates superior bleed resistance even at high flow levels, making it ideal for precision grouting where consistent performance is critical. Its non-metallic composition eliminates staining and corrosion concerns, while the absence of aluminum powder or gas-generating components ensures safe, predictable curing. With excellent flowability characteristics and low heat buildup during curing, SikaGrout 528 SF simplifies installation while maintaining industry-grade mechanical performance under structural loading conditions.
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Key Features of SikaGrout 528 SF
High Compressive Strength
Achieves 2,000 psi in 24 hours, progressing to 8,000 psi at 28 days for reliable structural support.
Two-Stage Shrinkage Compensation
The unique mechanism compensates for volume changes in both plastic and hardened states, preventing cracking and settlement.
Enhanced Silica Fume Formula
Undensified silica fume provides exceptional permeability resistance and increased durability.
Superior Bleed Resistance
Maintains 0.0% bleeding even at high flow levels, ensuring consistent density throughout placement.
Non-Metallic Composition
Will not stain, rust, or corrode, making it suitable for applications where appearance matters.
Low Heat Buildup
Controlled exothermic reaction minimizes thermal stress during curing in mass placements.
Excellent Flowability
Maintains 7-20 second flow time for up to 30 minutes after mixing, allowing precise placement in tight clearances.
Recommended Applications of SikaGrout 528 SF
SikaGrout 528 SF is engineered for professionals working on critical infrastructure projects where structural integrity and long-term performance are paramount. Its flowability and non-shrink properties make it especially suitable for confined grouting applications where void filling and structural support must be achieved without compromise.
Ideal Applications Include:
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- Equipment base plates and machinery foundations
- Structural steel column base grouting
- Precast concrete connections and joints
- Bridge bearing pad installations
- Crane rail and heavy equipment supports
- Post-tensioning duct grouting
- Anchor bolt and rebar grouting systems
- Void filling in concrete structures
Technical Specifications – SikaGrout-528 SF
High performance, cementitious grout with bleed resistance and two-stage shrinkage compensation.
8,000 PSI @ 28 Days
0.0% Bleed Resistance
Non-Shrink Formula
60 min Pot Life
Enhanced with Silica Fume
Non-Metallic Formula
Low Heat Build-up
Bleed Resistant at High Flow
Frequently Asked Questions
What is the recommended mixing water ratio for SikaGrout 528 SF?
Use 11.5 to 12.5 pints (5.4 to 5.9 L) of water per 50 lb bag. Do not exceed 12.5 pints as this will compromise performance.
How long do I have to place the material after mixing?
The material must be placed within 60 minutes of mixing for optimal performance and flow characteristics.
What type of mixer should I use?
For best results, use a high-shear colloidal mixer like the ChemGrout CG-600 series at approximately 1,800 rpm. For smaller batches, a high-speed drill (2,500 rpm) with a jiffy paddle works well.
Can this grout be used for patching or overlay applications?
No. SikaGrout 528 SF is designed specifically for confined spaces and should not be used as patching mortar or in unconfined areas.
What surface preparation is required?
The substrate should be clean, sound, and saturated surface dry (SSD) with no standing water. Remove all deteriorated concrete, oil, grease, and bond-inhibiting materials.
What is the shelf life of SikaGrout 528 SF?
12 months from date of production when stored properly in original, unopened packaging in dry conditions at 40-95°F (4-35°C).
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