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With time, asphalt surfaces inevitably deteriorate due to constant use and exposure to environmental factors. When this happens, asphalt overlay services by API offer a cost-effective and efficient method for repair and improvement. Below, we’ll highlight standard and fabric overlay techniques to cater to various pavement conditions.
An asphalt overlay is essentially a method of pavement rejuvenation, involving the application of a new asphalt layer on top of an existing deteriorated surface. This process not only enhances the visual appeal but also extends the pavement’s life by improving its structural integrity. The thickness of the overlay typically ranges from 1 ½ to 2 inches, tailored to accommodate the specific needs of the traffic and the customer’s requirements. Factors such as the type and volume of traffic are crucial in determining the appropriate overlay thickness.
Before the application of a new asphalt layer, it may be necessary to perform milling on the existing surface, which adjusts the pavement to the desired grade, ensuring a level base for the overlay.
For pavements plagued by widespread surface cracking and subgrade failures, a fabric overlay presents a robust solution. Such issues often stem from moisture infiltration into the pavement structure, weakening the underlying soil and leading to surface distresses like cracking.
A fabric overlay involves the application of a geotextile fabric between the old and new asphalt layers. This fabric acts as a barrier, preventing moisture from seeping further into the pavement structure, thereby preserving the strength of the base and subgrade layers. Additionally, the fabric absorbs the stresses transmitted from existing cracks, significantly reducing the likelihood of reflective cracking in the new overlay.
Adopting asphalt fabric overlays can significantly enhance pavement life, up to 50% in many cases. This method not only provides a resilient barrier against moisture and stress but also reduces maintenance costs over time. By extending the lifespan of existing pavements and improving their performance, fabric overlays are a strategic choice in pavement management systems, negating the need for complete reconstruction.