What is Biorestor® Pavement Restoration?
Pavement restoration and preservation, extending the performance and service life of asphalt pavements, is the result of applying BIORESTOR®. Hot-mix asphalt pavements, referred to as “flexible pavements”, are constructed of multiple, thin layers of HMAC (hot-mix asphalt concrete), which is a mixture of hot liquid asphalt cement, stone aggregates and sand, placed over stabilized bases or existing asphalt roadways – referred to as “asphalt overlays”. All layers, especially the final driving surface exposed to the elements, are designed with liquid asphalt binders (think of liquid asphalt as “glue”) to keep/retain the aggregate/sand mixture together, remain flexible, thus perform long-term as designed.
BIORESTOR® Asphalt pavement rejuvenation is more critical today than it has ever been for several reasons. To begin with, limited construction and maintenance budgets call for innovative solutions to stretch roadway dollars. Next, refinery technology and crude slates are producing lower performing liquid asphalt binders today, plus the addition of recycled asphalt pavements (RAP) and other recyclables into the surface layer, then exposing the liquid asphalt/“glue” to high heat, in a thin-film state, during the hot-mix production process – all contribute to making so-called “new” asphalt – prematurely-aged from day one, and finally, as the surface is exposed over time to sun/UV, moisture, and traffic damage, it oxidizes, becomes brittle/inflexible, starts to ravel – releasing surface fines, aggregates – and starts to crack and pothole, exposing supporting base layers to damaging elements, all leading to premature failures.