A Case History
A chip seal application was made on a March day in the Oklahoma City area. The morning of the event was sunny, but quite chilly--less than 50°F. Of course everyone knows that March is too early in the year to expect good seal coat performance, unless you're in some place like Arizona or Florida. The temperature that morning certainly would not be recommended for chip sealing, right? Wrong! The project was done using SemMaterials specially developed Stylink® Low Temperature Emulsion Seal Coat.
The results of this project met all expectations. When chips were pulled approximately four minutes after application, the polymer modified binder stretched like a rubber band and stuck firmly to the aggregate.
Specially Developed to Prolong the Paving Season
These emulsions are specially formulated for chip seal applications in less than ideal temperature condition. Most failures of seal coats occur when there are applied in cool weather, usually at the end of the season. SemMaterials RS-1P, CRS-1P, CRS-1S and LT-ST emulsions use a special emulsifier chemistry developed in combination with our Stylink® modified asphalt to give excellent results when it is too cold to obtain proper curing and adhesion with conventional "rapid set" emulsions. Chip Seals can now be successfully done earlier and later in the season. Several agencies have found these to be useful for night sealing, avoiding closing roads to traffic during busy daytime hours. Colder climates and high elevations are ideal candidates for these emulsion chip seals.
Stylink® technology modifies and chemically binds the asphalt with polymer before being emulsified. The result is a polymer matrix which provides excellent resistance to bleeding and shelling, and which gives remarkable durability. The emulsifier works with the modified binder to give quick strength and adhesion to the chips.
Success Stories
Millions of gallons of our low temperature chip seal emulsions have been successfully used in Arkansas, Arizona, Colorado, Kansas, Michigan, Oklahoma, Oregon and Texas.
Materials selection, chip seal design, site selection, pavement conditions, climate, equipment qualification and calibration, construction techniques, quality control and traffic control are all important parts of SemMaterials Low Temperature Chip Seal System. Contact your local SemMaterials Representative for details on how to extend your paving season using Stylink Low Temperature Chip Seal Emulsion, or for help in selecting the right treatments for your pavements.