Pavement preservation is a cost-effective and environmentally friendly way to extend the life of your roadways and make public funding go further. A well-implemented pavement preservation approach achieves maximum efficiency by increasing the average condition of your pavement while decreasing your average spending per square yard. Pavement preservation treatments are known for their ability to ensure quality with minimal effect on your budget and the environment.
Pavement preservation is the core of our AMISEAL™ product line, including micro-surfacing, chip seal, scrub seal, slurry seal, cape seal, and more.
Chip Seal
Chip Seals consist of the application of asphalt binder to a pavement surface followed by the uniform application of an aggregate that is generally embedded with rollers and finally swept.
The treatment is designed to be applied to pavements in good to fair condition.
Benefits:
- Seals the pavement against moisture intrusion
- Creates high friction surface for safety
- Seals small cracks and imperfections
- Reduces aging and oxidation of asphalt surface
Application Process:
Asphalt emulsion is applied with a distributor. A layer of aggregate is placed with a continuous feed spreader, followed by roller compaction.
Scrub Seal
A Scrub Seal surface treatment is a type of Chip Seal application that utilizes a broom pulled behind the distributor truck to distribute the binder and actively fill cracks.
Candidates for a scrub seal are similar to that of chip seal but may also have a highly textured surface or wider cracks.
Benefits:
- Widespread crack sealing
- Seals the pavement against moisture intrusion
- Creates high friction surface for safety
Application Process:
Asphalt emulsion is applied with distributor outfitted with a broom sled. During application, the broom forces the asphalt emulsion into the cracks of the existing pavement. A layer of aggregate is then applied, followed by roller compaction.
Micro/Slurry Seal
Micro and Slurry Seals are thin surface treatments designed for asphalt pavements in good condition.
The mixtures’ components include aggregate, asphalt emulsion, additives, and water. The mixture is continuously applied with a “paver” and distributed evenly with a spreader box.
Benefits:
- Quick construction times
- Improves surface friction
- Seals the pavement against moisture intrusion
- Restores black color to pavement surface
Application Process:
The micro/slurry seal mixture is mixed and placed in a single operation by a specialized paver or slurry machine containing a paver box designed to distribute the mixture evenly across the pavement.
Cape Seal
A Cape Seal is a multi-step treatment that incorporates two preservation layers. First a Chip or Scrub Seal is applied to the pavement surface.
After a waiting period, the Slurry Seal or Micro Surfacing is applied. Candidate pavements are in good to fair condition.
Benefits:
- Ride quality improvement
- Improves surface friction
- Seals the pavement against moisture intrusion
- Prevents chip loss with cape layer
Application Process:
A single chip seal or scrub seal layer is placed and allowed to cure. After a waiting period, the pavement surface is then covered with a durable and wear-resistant micro-surfacing or slurry seal layer.
A Research-Forward Approach
The core strength of Asphalt Materials, Inc. (AMI) is the formulation, manufacturing, and research and development of asphalt binders and emulsions. Our Asphalt companies supply high-quality products and services around the United States, allowing AMI to excel in pavement preservation techniques and construction services.
Since 1980, our in-house R&D laboratory, the Heritage Research Group, has helped our industry, customers and partners address and tackle our industry’s biggest challenges. Today, our labs provide innovative products, processes, and training to create longer-lasting, safer roads. We constantly seek new and inventive solutions by working closely with our customers and partners.
Recent Comments