Sika Intraplast N is a specialized grouting aid that combines expanding, fluidifying, and water-reducing properties to enhance Portland cement grouts for critical structural applications. This balanced formulation produces a slow, controlled expansion that occurs before the grout hardens, ensuring intimate contact between the grout and surrounding surfaces while maintaining exceptional workability and cohesion. The product’s unique chemistry eliminates settling and segregation issues commonly encountered with conventional grouts, making it ideal for precision grouting applications where dimensional accuracy and structural integrity are paramount.
Engineered for versatility, Sika Intraplast N works seamlessly with all types of Portland cement grouts including Type I, II, or III cement formulations, with or without pozzolanic materials, fly ash, or fine aggregates. The controlled gaseous expansion mechanism forces the grout into tight spaces and ensures complete void filling, while the fluidifying agents provide extended workability without compromising strength development. This combination of properties makes it particularly valuable for applications requiring both high fluidity during placement and reliable long-term performance under structural loads.
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Key Features of Sika Intraplast N
High Fluidity Performance
Creates extremely fluid, workable grout that maintains cohesion without settling or segregation during placement.
Controlled Expansion Technology
Produces slow, controlled gaseous expansion prior to initial set, forcing grout into intimate contact with all surfaces.
Universal Compatibility
Works with all Portland cement types (I, II, III) and can be used with or without pozzolanic materials, fly ash, or fine aggregates.
Reduced Water Requirements
Typically requires lower water content than conventional mixes while achieving equal or superior fluidity.
Enhanced Workability
Maintains workability throughout the placement window without compromising final strength characteristics.
Versatile Application Range
Suitable for openings from less than 1/4 inch to larger cavities with appropriate mix design adjustments.
Recommended Applications for Sika Intraplast N
Sika Intraplast N is formulated for professional contractors and engineers who require reliable grouting performance in demanding structural applications. Its expanding and fluidifying properties make it especially valuable for precision grouting where complete void filling and strong mechanical bond are essential for long-term structural integrity.
Ideal Applications Include:
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- Machinery base plates and foundation grouting
- Pre-packed aggregate cavity filling
- Rock fissure grouting and structural bolting
- Equipment anchor bolt installations
- Structural bearing pad installations
- Precision alignment and leveling applications
- Industrial equipment mounting systems
Technical Specifications – Sika Intraplast N
Expanding/fluidifying grouting aid with comprehensive performance data for machinery base plates and pre-packed aggregate applications.
High Fluidity Non-settling grout
1% Dosage Rate
1 Hour Placement Window
50 lb Bag Size
Controlled Gaseous Expansion
Extremely Fluid & Cohesive
Non-Settling Formula
Versatile Cement Compatibility
Frequently Asked Questions
What is the recommended dosage for Sika Intraplast N?
Add 1% by weight of total cementitious material (Portland cement plus fly ash if used). This dosage provides optimal expansion and fluidity characteristics.
What water-to-cement ratio should be used?
Keep water content as low as possible, generally less than 5.25 gallons per 100 pounds of cementitious material. Water requirements are typically lower than non-Sika Intraplast N mixes of equal fluidity.
How long do I have to place the grout after mixing?
Placement should be completed within one hour of mixing to ensure maximum expanding action occurs after the grout is in place.
What mixing sequence should be followed?
Add water to the mixer first, followed by Portland cement, fly ash (if used), Sika Intraplast N, and sand as required. Mix until uniform and thoroughly blended.
Are special forming requirements needed?
Yes, expansion should be restrained using tight, well-fitted forms to produce highest density, bond, and strength. Top forms should be used where there are open areas.
What are the storage requirements?
Store dry at 40-95°F (4-35°C) and protect from moisture. If the material becomes damp, discard it. Condition material to 65-85°F (18-29°C) before use for best results.
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