Slurry seal is a cold mixture of emulsified asphalt oil, water, rock, and additives (i.e. aluminum sulfate, lime, Portland cement, latex and carbon black). Surface conditions and location determines which additives are best to use. Machines are calibrated to ensure the slurry seal is applied according to the designated mix.
One simple application provides a new black surface with texture. The improved appearance means increased property value and eye appeal for marketing. Shopping centers and other public or commercial areas treated with Slurry Seal instantly become more attractive.
Slurry is applied to pavement via a slurry seal machine linked to a mixer. As the mixer/spreader is driven forward, slurry is dropped into a spreader box to ensure even distribution.
A new and promising technique in maintaining roadway surfaces was invented in the early 1930’s. This mixture of fine aggregates, asphalt binder and water was laid on a road in Germany to mark the beginning of Slurry Seal.
After the first successful application, extensive world-wide experiments were conducted. New emulsifiers and flow machines were introduced in the 1960’s. Today, advancements in mixtures have made Slurry Seal the #1 choice in durable, low cost paving and maintenance. Slurry Seal is now used throughout the World for treating a multitude of paved surfaces.
Slurry is a versatile pavement surface treatment system and differs in the ability to deposit a durable mixture. Before applying slurry seal, it is important that the surface is water-tight, voids are filled, and cracks are sealed. By preparing the surface before application, you can improve color and texture with a single pass. It may be used on freeways, residential streets, parking lots, driveways and any area that needs the pavement to be preserved.
TYPES OF SLURRY SEAL:
Emulsions with varying setting times are mixed with any of three grades of stone. The resulting slurry mix can be used for a multitude of specific purposes.
The three Aggregate types are:
1. Fine mixtures are used for maximum crack sealing in low density/low traffic areas.
2. General is the most commonly used grade for moderate to heavy traffic. It seals the surface, corrects loss of matrix and oxidation, improves skid resistance and corrects raveling.
3. Course mixtures correct severe surfaces and provide a course wearing surface. It is mainly used on high volume roadways.