Project Portfolio - FRAP Fractionated Recycled Asphalt Pavement

S.T.A.T.E. Testing provided the engineering support for the introduction of fractionated RAP into the Illinois market. In 2007, we helped the Illinois Tollway with demonstration projects, seeking to determine if the amount of RAP that could be used in their asphalt construction could be increased. These projects were successful; and the Tollway doubled the amount of RAP allowed in their HMA mixes.

Fractionating RAP into multiple sizes allows for more control during production than was previously possible with single size RAP. Increasing the amount of RAP in asphalt takes advantage of both the high quality aggregate and residual asphalt cement (binder) in the original pavement. This recycling concept is both "green" and cost-saving.

A separate screen deck processes RAP into size fractions at Rock Road Companies

"FRAP" is RAP which has been processed and screened into several size fractions