Application

Micro Surfacing

Micro– Surfacing is a cold mix mixture of high quality aggregate, polymer-modified emulsion, water and mineral filler blended according to a laboratory-determined mix design. It applies to existing, higher volume, heavy traffic and roads that are still in good-to-good condition, as a cost-effective preventive maintenance measure. It can reduce damage by sealing, preventing further oxidation, correcting turns and providing or replacing a high degree of slip resistance. It can also repair ruts, (up to 38mm thick) or re-profile roads. It has a life expectancy of more than seven years. It is applied to existing pavements using a special micro-box, (more comparable to a screed paver than a slurry box) connected to a micro-mixing unit, as shown on the right. The micro grid is variable width, allowing total coverage of a single lane in a single pass. The crew at the front of the unit regulates traffic control, and sweeps the road before applying the micro surface. Unit operators monitor mixing and application. After a short drying time, traffic will be allowed to continue using the newly rehabilitated lane.