High-traffic pavements may deteriorate more quickly based on frequent use, constant wear, and heavier loads. Compounding the issue are wet weather conditions and exposure to fuel, both of which can worsen long-term durability of the pavement surface. Using an anti-strip agent for asphalt paving can provide additional protection and improve surface performance to protect against rutting, raveling, and [...]
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 [...]
New roadway infrastructure development is on the rise with market growth of 8.05% expected by 2032. This demand is due, in part, to the deteriorating condition of existing roadways. In fact, in the U.S. alone, 39% of roads are considered to be in poor or mediocre condition. The primary culprit behind substandard roadway conditions: potholes. Damage to passenger vehicles mounts 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 [...]
