What Is Non Shrink Grout Used For?
Non shrink grout is a specialised construction material used where precise load transfer, dimensional stability, and long-term structural support are required. Unlike ordinary cement grout, it is engineered to maintain its volume after curing, ensuring full contact between structural elements and foundations. This makes non shrink grout essential in many critical construction and industrial applications.
Why Non Shrink Grout Is Used
In construction, even small shrinkage can create voids that reduce strength and cause long-term problems. Non shrink grout is used to eliminate these risks.
- Prevents shrinkage and settlement after curing
- Ensures complete contact under load-bearing elements
- Improves structural stability and durability
- Reduces vibration and movement in machinery installations
1. Machinery Base Plates and Equipment Foundations
One of the most common uses of non shrink grout is under machinery and equipment bases.
- Provides uniform load transfer from equipment to concrete foundation
- Reduces vibration and misalignment
- Prevents settlement over time
- Used in factories, plants, and industrial facilities
2. Column Base Plates and Steel Structures
Non shrink grout is widely used at the base of steel columns and structural frames.
- Fills gaps between base plates and concrete
- Ensures accurate load distribution
- Improves stability of steel structures
- Used in commercial and industrial buildings
3. Anchor Bolts, Dowels, and Starter Bars
Anchor bolt grouting requires high strength and volume stability.
- Locks anchor bolts firmly into position
- Prevents loosening under load or vibration
- Ensures long-term fixing strength
- Used for structural and mechanical anchors
4. Precast Concrete Installation
Non shrink grout is used to seat and align precast concrete elements.
- Provides accurate leveling of precast units
- Ensures full bearing contact
- Transfers loads effectively between elements
- Used in beams, panels, and columns
5. Structural Repairs and Void Filling
In repair works, non shrink grout restores strength and continuity.
- Fills voids and honeycombed areas
- Restores load-bearing capacity
- Used in columns, beams, and slabs
- Suitable for both new and existing structures
6. Bridge Bearings and Infrastructure Works
Infrastructure projects rely on non shrink grout for long-term performance.
- Supports bridge bearings and girders
- Handles high static and dynamic loads
- Resists settlement and cracking
- Used in roads, bridges, and heavy infrastructure
7. Industrial and Heavy-Duty Applications
Non shrink grout is essential in demanding industrial environments.
- Used in power plants, refineries, and factories
- Supports heavy equipment and rotating machinery
- Performs under continuous vibration and load
Advantages of Using Non Shrink Grout
- Maintains volume after curing
- High compressive strength
- Excellent load transfer capability
- Improved durability and service life
- Reduced maintenance and repair costs
Where Ordinary Cement Grout Is Not Suitable
Non shrink grout should be used instead of ordinary grout in critical areas.
- Heavy machinery bases
- Structural column bases
- High-load anchor bolts
- Precision grouting applications
Frequently Asked Questions (FAQ)
1. Can non shrink grout be used everywhere?
No, it should be used where load transfer and dimensional stability are critical.
2. Is non shrink grout stronger than cement grout?
Yes, it generally provides higher strength and better load transfer.
3. Can it be used outdoors?
Yes, with proper curing and protection.
4. Is non shrink grout waterproof?
It resists moisture but is not a waterproofing system.
5. Who decides where to use non shrink grout?
The engineer or project specification usually defines its use.
Raltro
Raltro is a construction materials knowledge platform that focuses on practical material application rather than theory alone. By explaining where non shrink grout is used and why it is essential in load-bearing and precision applications, Raltro helps engineers, contractors, and site teams make informed decisions that improve structural performance, reduce failures, and ensure long-term reliability across construction and industrial projects.