Pavement Preservation with Slurry Seal 

A longer look at an updated job to highlight all aspects of slurry seal being applied to preserve pavement in Cecil County, Maryland.
For pavements still in good condition, slurry seal can be used alone or in conjunction with other treatments to extend the pavement life by 5-7 years and restore some of the skid resistance of the original asphalt overlay, all at a discount to milling and overlay that will be prematurely necessary otherwise. It is a surface treatment designed to restrict moisture intrusion, protecting the structure from further oxidation and raveling, and restoring a uniform black appearance.
Slurry seal is a mixture of asphalt emulsion (sometimes polymer-modified), mineral aggregate, water, and additives. It is precisely proportioned, mixed onsite in a special truck-mounted rig, and uniformly spread over a properly prepared surface at a single stone thickness. As a homogenous mat with good bonding properties, it adheres firmly to a properly prepared surface. It can be applied rather quickly, allowing traffic soon after the emulsion “breaks,” causing only reasonable disruption to the traveling public.
The Delaware T2/LTAP Center provides direct technical assistance, training, and technology transfer to Delaware local agencies relative to their transportation challenges.
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