- Type of tarmacCold
coated with a mild soap solution to form a homogenous water based asphalt. Emulsions can be either anionic (negatively charged) or cationic (positively charged). These emulsions are further classified into slow setting, medium setting and rapid setting categories. The type of emulsion to choose is determined by its intended purpose. Since emulsions are water based, they are environmentally friendly, yet subject to temperature changes. Emulsions are used for many applications in fog seals, chip seals, slurry seals, pavement repair and in construction.
Cutback Asphalt is a mixture of asphalt cement and solvents. The most common types are classified as rapid cure and medium cure. They are essentially liquid asphalts. Some are thin enough to be used as prime oil or tack, while others must be heated for use. Their uses included dust control, pavement maintenance, construction (chip seal) and cold mix patching.
Polymerized Asphalt Emulsions are emulsions modified with latex polymer or rubber polymer with resins, oils and additives. The polymer is blended into the asphalt during the manufacturing process and modifies the cured properties of the asphalt. They give the asphalt increased temperature range performance. These emulsions can withstand greater temperature changes throughout the year. They are more flexible in cold weather and not as soft in the summer.
Industrial Cutbacks are cutback asphalts blended with asphalt pitches and solvents. They are designed to dry quickly and leave a hard asphalt coating. These coatings can withstand higher temperatures and environmental conditions (such as rain) better than softer conventional cutbacks. This allows them to be used as the base asphalt product for undercoating and roofing products.
Foundation Coatings are primarily rapid cure cutback asphalts. They may be either conventional cutbacks or industrial cutbacks. They are used for building foundations and subsurface applications such as bridge pilings. Asphalt emulsions can also be used for foundation coatings provided the necessary modifications are performed by the buyer.
Slurry Seal Emulsions are specifically designed to be used in a slurry system. The emulsions are anionic (negatively charged) or cationic (positively charged). Most are slow setting emulsions but there are quick setting emulsions for fast traffic systems. The emulsions are designed for the specific job in a specific area using specific raw materials. They allow for adequate mix time with the other materials before being placed on the pavement and curing to a new, slurry seal wearing surface.