Cold-Laid Latex-Modified Emulsion Pavement Courses (Ralumac)

摘要

Over 90% of all highways in the United States have asphalt surfacing. One of the major concerns for asphalt pavement is rutting. Ralumac was successfully used in West Germany in the late seventies to fill ruts and to resurface highways. Ralumac is a patented mixture of asphalt emulsion, latex, cement, chemical additives, aggregates and water. It is applied cold, similar to a slurry seal. The set time is controlled by adjusting the chemical additives. Major advantages of Ralumac are its flexibility in application, quick setting property, temperature stability, good skid quality and durability. Ralumac has been used experimentally for several types of applications in Pennsylvania since the early 1980s. These include rut filling, overlay, bridge deck sealing and stress-absorbing-membrane-interlayer. The purpose of the project was to evaluate Ralumac for wearing course applications under various traffic and site conditions.