Reflective Crack Relief Pavement Interlayers
What is Reflective Cracking?
Reflective cracking occurs when cracks or joints in an existing pavement structure propagate upward through a new asphalt overlay. This is common when hot mix asphalt is placed over concrete or composite pavements, where movement in the underlying pavement causes cracks to appear prematurely in the new surface.
Arkema's Strata® reflective crack relief technology is specifically designed to delay this process by creating a strain-tolerant, impermeable interlayer that absorbs pavement movement before it reaches the asphalt overlay. The result is longer-lasting pavements, improved durability, and reduced maintenance costs.
How Strata® Reflective Crack Relief Interlayers Work
Strata® reflective crack relief interlayers are designed to absorb pavement movement, reduce stress transfer, and delay crack propagation through asphalt overlays. The impermeable interlayer also helps reduce moisture infiltration, preserving pavement integrity and extending overlay service life.
Benefits of Reflective Crack Relief Technology
- Improves ride quality and pavement smoothness
- Delays longitudinal and transverse cracking
- Reduces roadway repair expenses
- Minimizes traffic disruptions and user delays
- Extends pavement service life
Arkema's Strata® Pavement Technology
Arkema's Strata® pavement technology is an advanced strain-tolerant reflective crack relief interlayer engineered to improve the performance of asphalt overlays placed over concrete or distressed pavements.
Strata® is an impermeable, flexible, high-polymer asphalt mixture that helps prevent moisture from entering the pavement structure while significantly delaying reflective cracking. It is installed using conventional hot mix asphalt paving equipment and is followed by a standard asphalt overlay.
Each Strata® interlayer can be engineered to meet the specific strain tolerance and rut resistance requirements of a roadway. Compared to conventional hot mix asphalt (HMA) or other polymer-modified binder approaches, Strata® delivers improved rut resistance while providing superior reflective crack mitigation.
Field studies in Kansas have shown that Strata® crack relief interlayers installed over deteriorated concrete pavements delayed reflective cracking for up to 12 years before additional maintenance was required, effectively doubling overlay service life compared to conventional asphalt overlays.
Applications in Pavement Rehabilitation
Reflective crack relief interlayers are used in pavement rehabilitation applications such as:
- Asphalt overlays over concrete pavements
- Composite pavement rehabilitation
- Roadways with longitudinal or transverse cracking
- Pavement preservation projects
- High-traffic corridors requiring extended overlay life
These technologies are often used alongside asphalt additives, asphalt emulsifiers, and advanced pavement technologies to support a complete pavement performance strategy.
Optimize Pavement Performance
Explore Strata® pavement technology, review available case studies, or contact Arkema’s technical experts to discuss reflective cracking challenges and pavement rehabilitation needs.
