Ralumac® Micro-surfacing

Ralumac® micro-surfacing is a cost-effective preventive maintenance technique for renewing surfaces and protecting pavements. A quick, economical surface treatment for asphalt and PCC, micro-surfacing provides a smooth, black, highly textured and durable pavement surface. The cold thin surface paving solution consists of a water-based polymer modified asphalt emulsion, 100% crushed fine aggregate, mineral filler, water, and additives.

Ralumac® micro-surfacing is applied by specially qualified and trained contractors using self-contained mixing and laying equipment. The equipment continuously blends the separately loaded components in a job mix formula pre-determined at one of the Road Science™ laboratories. It can be applied in a thin lift, it sets quickly, and the road can be reopened to traffic in about an hour. The polymer modified slurry cures and develops strength faster than conventional slurry seals allowing micro-surfacing to be placed in greater thicknesses and to fill non-working ruts.

Introduced in the U.S. in 1980, Ralumac® micro-surfacing is now routinely used in more than 30 states, in Canada, and by many local agencies. States such as Ohio, Oklahoma, Pennsylvania, Tennessee, Texas and Virginia all use micro-surfacing as part of their preventive maintenance programs, and for rut filling and texturing their moderate to heavy volume roads—over both asphalt and concrete pavements.

More than just a pretty surface


On asphalt pavements, it can be used for sealing, rut filling, and to improve a road’s macrotexture. On concrete pavements, it can be used for texturing, noise reduction, and repairing wheel path abrasion channels caused by studded tires.

Performance


A successful Ralumac® micro-surfacing project can last from 6 to 9 years, depending on application and project conditions. Ralumac® micro-surfacing is also environmentally friendly. The cold application saves valuable energy and can be recycled at a later date.