Effect of Rejuvenated Binder on the Pavement Rutting Performance at Different Aging Levels
Table 8
LWT stripping inflection point results, 50°C wet.
Mix composition
Aging level
Stripping inflection point (number of passes)
Average
COV (%)
Groupings
Virgin aggregate + virgin binder
1-hr aging at 165°C
6225
10
B
5-day aging at 85°C
20000
NA
A
10-day aging at 85°C
20000
NA
A
RAP + 7.9% RA1
1-hr aging at 165°C
20000
NA
A
5-day aging at 85°C
20000
NA
A
10-day aging at 85°C
NM
NA
NA
RAP + 15.7% RA1
1-hr aging at 165°C
5683
12
C
5-day aging at 85°C
14344
22
B
10-day aging at 85°C
20000
NA
A
RAP + 6.5% RA2
1-hr aging at 165°C
20000
NA
A
5-day aging at 85°C
20000
NA
A
10-day aging at 85°C
20000
NA
A
RAP + 11.3% RA2
1-hr aging at 165°C
11238
6
C
5-day aging at 85°C
15790
9
B
10-day aging at 85°C
20000
NA
A
NA: not applicable (mixes did not strip after 20000 passes); NM: not measured as the specimen was damaged; COV: coefficient of variation. Statistical groupings were based on Tukey’s analysis at a 95% confidence level.
