Webinar

TRANSCRIPT FROM VIDEO: There are several approaches to evaluating RAP in balanced mix design.   Balanced mix design considers the functional characteristics of the mix and seeks a compromise between competing properties in order to meet the required specifications for roadway performance. For example, a balanced mix design will look to offset the impact of stiffness compared to [...]

TRANSCRIPT FROM VIDEO: Asphalt mixes incorporating RAP should be evaluated for key performance specifications. To do this, samples from the fractionated RAP stockpiles are taken to a lab for analysis. Determining the amount of RAP viable in a balanced mix design will depend on the established mix specifications. Typically, by using a blend from different fractionated particle [...]

TRANSCRIPT FROM VIDEO: To recycle RAP into new roadway surfaces as an eco-friendly alternative, the material must be processed into a more uniform product.  First, the material is screened to remove foreign matter. Then, the remaining aggregate is crushed into smaller particles, often broken down from larger blocks sourced from a job site. Next, the aggregate is [...]

TRANSCRIPT FROM VIDEO: Reclaimed Asphalt Pavement, or RAP, comes from the material removed during a roadway resurfacing. Most RAP is produced by milling the top two inches of the road’s wearing course to prepare the surface for new paving material installation or, in the case of full-depth reclamation, over 8 to 10 inches of roadway material. RAP [...]