Products
Slurry Seal
Slurry seal is a versatile & low-cost surface treatment system used for preventing issues in newly laid pavements, correcting problems in older pavement and improving the aesthetics of pavements.
What is Slurry?
Slurry seal is a mixture of aggregate, asphalt emulsion, and filler, which are mixed together according to a laboratory’s design-mix formula. water is also added for workability. Asphalt emulsions serve as a binder, holding the crushed aggregate together and adhering the new slurry surfacing to the old surface over which it is being applied. Various emulsions and aggregates are used to meet the conditions, specifications, and requirements of individual projects.
The aggregate must be clean, crushed, durable, properly graded, and uniform. The asphalt emulsion is a three-part system consisting of asphalt, water, and emulsifier. Fillers such as Portland cement, hydrated lime, or aluminum sulfate liquid are often used in small quantities as stabilizers or chemical modifiers.
How is Slurry made?
The Slurry is made in specially-designed equipment, either truck-mounted or self-propelled. This equipment is manufactured by our sister company and carries a quantity of unmixed materials which are blended together in a continuous flow pugmill.
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​The use of this technologically-advanced machinery ensures a smooth, consistently uniform mixture. The slurry is made quickly and accurately at the project site. Mixing and spreading are accomplished in one continuous operation, with the surface being reopened to travel within a few hours.
How is Slurry applied?
Slurry seal is applied to an existing pavement surface by means of a spreader box linked to the surface slurry-mixing unit. The Slurry is introduced into the spreader box, which then lays down the slurry coating as the mixer/spreader is driven forward. The box is capable of spreading the slurry seal over the width of a traffic lane in a single pass and is constructed so that close contact with the existing surface is maintained.
Trained operators continually monitor the automatic mixing procedure. Other personnel clean the surface before slurry applications, barricade the street, inspect the operation in progress for uniformity, clean metal utility covers after application, and complete slurry seal spreading in an area inaccessible to the spreader box.
