InfraStructures - February 2018 - Gilsonite-Based Emulsified Asphalt Seal Coat Proven to Maintain Pavement

Gilsonite-Based Emulsified Asphalt Seal Coat Proven
to Maintain Pavement

GSB-88^® Sealer/Binder Emulsion from Asphalt Systems, Inc.^® (ASI) is a gilsonite-based emulsified asphalt seal coating product that has demonstrated in numerous studies to not only add years of life to asphalt pavement, but also to provide up to 400% return on investment. The primary deteriorating factor for most asphalt pavements is surface oxidation. Application of GSB-88^® very early in the life of the pavement, and timely repeat applications every 4 to 7 years, can eliminate surface oxidation as a significant factor in pavement deterioration. As an integral component of GSB-88^®, gilsonite is a unique, naturally occurring resinous asphalt ore found in Utah that does not have to undergo an oil refining process. Gilsonite emulsions are non-flammable, non-carcinogenic and non-toxic. GSB-88^® comprises a mixture of gilsonite, specially selected plasticizers and oils that penetrate and reintroduce essential binders into the pavement matrix. GSB-88^® is designed to mitigate the impacts of surface oxidation and moisture damage on asphalt pavements, halting deterioration and sealing the surface to help repel water. The product also helps prevent or cure surface raveling.

The average GSB-88^® treatment cycle is 4 to 7 years. Based on nearly 3 decades of projects, studies, and commercial and governmental assessments, when applied regularly, GSB-88^® can protect against the detrimental effects of surface oxidation of asphalt pavements almost indefinitely.

Free from toxic, old-school coal tar and with very low VOC levels, ASI’s gilsonite-based asphalt preservation products are safe for the environment. As an aid to maintaining infrastructure, pavement preservation is both eco-friendly and socially responsible. ASI’s GSB-88^® is the only product in the asphalt industry today to have undergone rigorous independent 3rd-party environmental testing. After an intensive 2011 Life Cycle Assessment by the Institute for Environmental Research & Education (IERE), GSB-88^® earned an Environmental Product Declaration (EPD), which attests to the significant environmental benefits of its use in preserving pavement. Additionally, GSB-88^® has been honored with a GreenCircle^® Certification, recognizing that one application every 5 years can significantly extend the life of asphalt and help reduce global warming, acidification and eutrophication by nearly 50%, when compared to reconstruction.

GSB-88^® applies quickly and easily with standard bituminous distributors. Spread rate is dependent upon the existing asphalt pavement’s texture, porosity, and age. Application generally cures in 2 to 8 hours. Wet GSB-88^® can be cleaned up with water and GSB-88^® can be removed from skin with industrial hand cleaners and hand creams. Applications for GSB-88^® include pavements ranging from high-speed state highways to parking lots, city streets, and county roads. It has also been applied to more than 500 military and civil airport runways in North America.

Source: Asphalt Systems, Inc.

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