Sika Grout Aid is a precision-engineered grouting admixture that combines expanding, water-reducing, and retarding agents to optimize Portland cement grout performance in high-lift masonry construction. This balanced formulation delivers slow, controlled expansion prior to hardening, effectively compensating for natural grout volume loss while providing superior workability and placement characteristics. Designed specifically for demanding grouting applications in concrete block and clay brick construction, it ensures consistent fill and enhanced structural integrity in vertical grouting operations.
The unique triple-action formula reduces water requirements by at least 10% while extending the plastic state of grout, allowing adequate time for proper vibration and consolidation. This extended workability, combined with the controlled expansion properties, eliminates common issues such as settlement cracks, cold joints, and incomplete fill that can compromise structural performance. The retarding action provides contractors with extended placement time while ensuring the expansion occurs during the optimal phase of the curing process, resulting in superior bond strength and enhanced shear values compared to conventional grouting methods.
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Key Features of Sika Grout Aid
Controlled Expansion Technology
Provides slow, measured expansion that compensates for natural grout volume loss, ensuring complete void filling and eliminating settlement issues.
Water Reduction Properties
Achieves at least 10% water reduction, allowing for leaner mix designs while maintaining optimal flow characteristics and reducing permeability.
Extended Workability
Retards setting time and increases water retention, extending the plastic period for proper vibration and placement in high-lift applications.
Superior Bond Performance
Delivers higher shear and bond values compared to conventional grout mixes, enhancing structural integrity and load transfer capabilities.
Enhanced Placeability
Improves flow characteristics and reduces segregation, ensuring consistent placement even in confined spaces and complex masonry configurations.
Crack Prevention
In-place expansion combined with improved workability significantly reduces the formation of cracks and cold joints during curing.
Recommended Applications of Sika Grout Aid
Sika Grout Aid is specifically formulated for professionals engaged in high-lift masonry grouting where structural integrity, complete void filling, and long-term performance are critical. Its unique combination of expansion control and extended workability makes it essential for projects requiring precise grout placement and optimal consolidation in vertical applications.
Ideal Applications Include:
- High-lift grouting of concrete masonry units (CMU)
- Clay brick and hard-burned masonry grouting
- Multi-story masonry construction projects
- Structural masonry with reinforcing steel
- Load-bearing masonry walls and columns
- Masonry restoration and repair work
- Projects requiring enhanced bond strength and durability
Technical Specifications – Sika Grout Aid
Expanding, water-reducing, retarding high-lift grouting aid with balanced blend for Portland cement grouts.
10% Min Water Reduction
42 lb Bag Size
1.5 hrs Max Use Time
65-80°F Storage Range
Expanding Action
Water-Reducing
Set Retarding
Higher Bond Strength
Extended Working Time
Superior Place-ability
Frequently Asked Questions
What is the recommended dosage rate for Sika Grout Aid?
Use approximately 1 pound of Sika Grout Aid per 100 pounds of cementitious material, or 6 pounds per cubic yard of grout mix.
How long can I work with grout containing Sika Grout Aid?
The grout should be used within 1.5 hours after adding Sika Grout Aid to maintain optimal performance characteristics.
What slump should I maintain with this admixture?
Maintain a slump of 8 to 10 inches (20.3-25.4 cm) for optimal flow and placement characteristics.
Can Sika Grout Aid be premixed with water?
Yes, it can be premixed with water and added as a solution, provided the correct dosage is maintained and added slowly to prevent lump formation.
What are the storage requirements?
Store in a dry location at 65-80°F (18-27°C), protected from moisture. If the material becomes damp, discard it. Shelf life is 12 months in original, unopened packaging.
Is testing required before use?
Yes, design mixes should always be tested to verify satisfactory performance, specifically regarding strength, bleed, flow, and segregation characteristics.
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