Trr No. 1171 Asphalt Materials And Mixtures, pp. 108-112
The paper presents an evaluation of the use of emulsified asphalt in a relatively new process called microsurfacing. The process was developed in Germany and was first used in the US in late 1980. Natural latex rubber is incorporated into the asphalt emulsion and mixed with aggregate and other additives in a travelling pug mill similar to but larger than that of a regular slurry seal machine. The test section that was selected for microsurfacing is 3 mi of four-lane divided highway in an urban area. Coonstruction was completed in June 1983. The data indicate that the service life of the test section has been enhanced. It is recommended that microsurfacing be approved for routine use in restoring flexible pavements to fill surface ruts and cracks, seal the surface and restore skid resistance