UFC 3-250-03
15 May 2001
Table B-4
Asphalt Mixture Properties at Optimum Asphalt Content
Mixture with no
Mixture with 0.5 Percent
Property
Recycle Agent
Recycle Agent
Optimum asphalt content, percent
4.0
3.0
(by mass of total mix)
Density, kg/m3 (pcf)
2,404 (150.1)
2,363 (147.5)
Stability, N (lb)
9,786 (2,200)
8,007 (1,800)
Flow, 0.25 mm (0.01 inch)
16
16
Voids total mix, percent
3.9
4.5
Voids filled with asphalt, percent
75
72
Penetration of recovered asphalt binder,
40
90
0.1 mm
Table B-5
Mixture Properties at Optimum Asphalt and Optimum Recycling Agent Content
Property
Mixture
Optimum recycling agent, content, percent
0.1
Optimum added asphalt content, percent
3.8
Density, grams/centimeter3 (pcf)
2,397 (149.6)
Stability, N (lb)
9,119 (2050)
Flow, 0.25 millimeter (0.01 inch)
16
Voids total mix, percent
4.0
Voids filled with asphalt, percent
74
Penetration of recovered asphalt binder, 0.1 millimeter
50
h. Step 8. At start-up of plant operations, the mixture may have to be modified to suit field
conditions. The properties of the asphalt binder can be adjusted without changing other mix properties
significantly by increasing the amount of recycling agent slightly and decreasing the amount of asphalt
cement by the same amount or vice versa. Failure to modify mix design to meet field conditions may
result in an unsatisfactory mix.
B-4
Previous Page
