The Le SikaRep-2400 is a high-strength, specialized repair mortar manufactured by Sika, a global company known for its chemical products for construction and industry. This product is designed for structural concrete repairs and is widely used due to its durability, ease of application, and capacity to withstand harsh conditions.
Key Features of Le SikaRep-2400
- High mechanical strength: Designed to provide significant structural resistance, making it suitable for repairs on load-bearing structures.
- Fiber reinforcement: Contains fibers to enhance toughness and crack resistance, reducing the likelihood of microcracks and ensuring greater durability in high-stress areas.
- Easy application: It can be applied in a single layer, with excellent adhesion to existing concrete and is user-friendly, allowing professionals and skilled workers to apply it without requiring advanced equipment.
- Versatile use: Suitable for both horizontal and vertical surfaces, making it useful for bridges, columns, retaining walls, and other infrastructure needing restoration.
- Corrosion resistance: Protects steel reinforcement within the concrete due to its low permeability, preventing water and corrosive agents from penetrating the structure.
Typical Applications
Le SikaRep-2400 is ideal for:
- Repairs on concrete damaged by heavy loads or exposure to harsh environmental conditions.
- Restoration of deteriorating infrastructure (such as bridges or tunnels).
- Repairs on structural elements like columns, beams, and slabs.
Additional Advantages
- Fast curing: This mortar hardens quickly, allowing repaired areas to be reopened for use sooner.
- Freeze-thaw cycle resistance: It’s ideal for environments where concrete is exposed to temperature fluctuations, preventing premature deterioration.
Application Considerations
When applying Le SikaRep-2400, it’s essential to prepare the surface properly by removing dust and loose particles and moistening the area without causing pooling. Also, mixing should follow Sika’s recommended proportions to ensure the product’s strength and durability.
Here is the detailed technical information about SikaRep®-2400 , designed for structural repair in demanding environments:
Key Technical Characteristics
- Compressive Strength:
- After 1 day: Approximately 25 MPa
- After 7 days: Approximately 50 MPa
- After 28 days: Approximately 60 MPa
- These high values ensure optimal durability and strength once the product has fully cured.
- Flexural Strength:
- After 1 day: Approximately 5 MPa
- After 7 days: Approximately 8 MPa
- After 28 days: Approximately 10 MPa
- This property allows it to withstand bending stresses, reducing the risk of cracks under dynamic loads.
- Granulometry:
- Maximum aggregate size of 2.5 mm, enabling application in thick layers with a smooth finish.
- Application Thickness:
- This mortar can be applied in layers between 5 mm and 60 mm thick per pass, making it suitable for deep repairs on deteriorated concrete surfaces.
- Adhesion to Concrete:
- Bond strength to concrete substrate is over 1.5 MPa, even without a primer, ensuring excellent adhesion and minimizing the risk of delamination or cracking.
- Modulus of Elasticity:
- Value around 20-25 GPa, meeting the requirements for structural repairs and ensuring compatibility with existing concrete.
- Water Permeability Coefficient:
- The mortar has low permeability, which protects embedded reinforcements from corrosion by limiting the entry of water and other aggressive agents.
- Freeze-Thaw Cycle Resistance:
- Tested and certified for freeze-thaw cycle resistance, making it suitable for cold climates or humid environments.
- Fresh Mortar Density:
- Approximately 2.2 kg/L, providing good density without compromising application ease.
- Setting Time:
- Initial Set: 4-6 hours (at 20°C)
- Final Set: 6-8 hours (at 20°C)
- This rapid setting time minimizes downtime, allowing timely handling and further work.
- Chemical Durability:
- High resistance to aggressive environments, such as oils, greases, de-icing salts, and other chemicals commonly found in industrial or marine environments.
Additional Characteristics
- Color: Concrete gray, harmonizing well with existing concrete structures.
- Packaging: Available in 25 kg bags for ease of transport and application.
- Mixing: Requires only water, allowing easy preparation with a recommended ratio to achieve optimal consistency.
SikaRep-2400 is ideal for concrete structure repairs due to its high mechanical strength and durability, providing a reliable and long-lasting solution for structural applications.
Conclusion
Le SikaRep-2400 is an excellent choice for those looking for a high-performance repair mortar in demanding environments, known for its mechanical strength, durability, and ease of use.
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