Eagle Wraps

An expansion joint filler board, often referred to as a "dura board," is a specific type of material used in construction to fill expansion joints in concrete structures. Here's a detailed look at its characteristics and applications:
1. **Material Composition**:    - **Types**: Expansion joint filler boards like dura boards are typically made from materials such as bitumen-impregnated fiberboard, rubberized asphalt, or closed-cell polyethylene foam.   - **Properties**: These materials are chosen for their ability to compress and expand with temperature changes, resilience to water and chemicals, and durability under load.
2. **Function**:   - **Expansion Joints**: In concrete structures, expansion joints are intentional gaps designed to accommodate the expansion and contraction of concrete due to temperature changes, moisture variations, and seismic activity.   - **Sealing**: The dura board is placed in these joints to fill the gap partially and to act as a bond breaker between concrete sections. It prevents the ingress of debris, water, or other substances that could undermine the integrity of the joint.
3. **Installation**:   - **Preparation**: Before pouring concrete, the expansion joint filler board is placed in the joint to the required depth. This ensures that the joint remains open and accessible for expansion.   - **Compatibility**: Different types of dura boards are chosen based on factors such as the width of the joint, expected movement, and environmental conditions.
4. **Advantages**:   - **Flexibility**: Allows for movement of the concrete without causing damage to the structure.   - **Water Resistance**: Helps in preventing water from entering and causing damage to the joint and adjacent concrete.   - **Longevity**: Provides long-lasting performance, reducing maintenance needs over time.
5. **Applications**:   - **Buildings**: Used in commercial and residential buildings to manage expansion joints in floors, walls, and roofs.   - **Infrastructure**: Widely applied in bridges, highways, airports, and other large-scale infrastructure projects to accommodate thermal expansion and contraction.
In summary, dura board or expansion joint filler boards play a crucial role in maintaining the structural integrity and longevity of concrete constructions by effectively managing expansion joints. Their selection and installation are critical to ensuring proper functionality and durability of the joints over the life of the structure.

Additional Information:

• Packaging Details: HDPE bags