A Review on Micro Surfacing Mixture and Perusing the Feasibility of Using Recycled Materials in It

Microsurfacing successful performance in pavement preservation treatments, increasingly has caused to encourage it. Because of cold mixing and low material consumption compared to other asphalt mixtures, microsurfacing has environmental benefits much more, yet costs less. The mixture also enjoys a good shelf life for high durability. However, due to the very low thickness of the protective layer is not capable of bearing, but can be used as alternative to asphalt overlay for pavements that do not have the structural or load-bearing traffic problems. In this paper, after a brief review of the microsurfacing mixture and presenting technical and functional characteristics, the feasibility of using reclaimed asphalt pavement and crumb rubber in the mixture is perused based on the studies have been done so far. Considering these studies, it was concluded that the use of this recycled materials can improve on the technical characteristics especially mixture viscosity and it can also entail the development of microsurfacing function. Besides, in recent years there has been a trend toward the use of new microsurfacing mixtures containing recycled materials; that of course, more research is needed to examine the laboratory characteristics in accordance with relevant regulations.