CC2 HMA Overlay Test Plan Wheel Load/Tire Pressure
Trafficking Schedule for CC2 Overlay Test Items
Trafficking started on July 7, 2005, and continued until October 6, 2005, following the schedule in Table 1. (The loading was increased after 5,082 repetitions because none of the pavements showed any significant deterioration at that traffic level.) The standard NAPTF 66-repetitions per cycle wander pattern was used on both traffic lanes. The temperature of the asphalt varied between 66 and 85 degrees F (19 And 29 degrees C) during the period of testing. The average temperature of the asphalt was about 78 degrees F (26 degrees C).
|
Dates
(from-to)
|
Repetitions (from-to)
|
Test Items Trafficked
|
Load on
North Lane
|
Load on
South Lane
|
|
07/07/05
07/25/05
|
1
5,082
|
MRG-N, MRC-N, MRS-N MRG-S, MRC-S, MRS-S
|
4-wheel,
55,000 lbs
|
4-wheel,
55,000 lbs
|
|
07/26/05
08/12/05
|
5,083
11,814
|
MRG-N, MRC-N, MRS-N MRG-S, MRC-S, MRS-S
|
6-wheel,
65,000 lbs
|
4-wheel,
65,000 lbs
|
|
08/15/05
08/18/05
|
11,814
14,256
|
MRG-N, MRC-NW, MRS-N MRG-S, MRC-S, MRS-S
|
6-wheel,
65,000 lbs
|
4-wheel,
65,000 lbs
|
|
08/19/05
08/24/05
|
14,257
16,302
|
MRG-N, MRS-N
MRG-S, MRC-S, MRS-S
|
6-wheel,
65,000 lbs
|
4-wheel,
65,000 lbs
|
|
09/13/05
10/06/05
|
16,303
25,608
|
MRG-N, MRS-N MRG-S, MRS-S
|
6-wheel,
65,000 lbs
|
4-wheel,
65,000 lbs
|
* Cold, unloaded tire pressures: 220 psi at 55,000 lbs and 260 psi at 65,000 lbs.