Long-Term Skid Resistance Evaluation of GAC-16 Based on Accelerated Pavement Testing
Table 4
Technical specifications of the asphalt mixture.
Program
Test method
Technical requirements
S1
S2
S3
S4
Asphalt content (%)
—
—
4.7
4.6
4.6
4.6
Volume of air voids (%)
—
4∼6
4.3
4.0
4.4
4.1
Void filled with asphalt (%)
—
65∼75
69.3
70.8
68.1
69.7
Void in mineral aggregate (%)
—
≥13.5
13.7
13.8
13.9
13.9
Marshall stability (kN)
T0709
≥8.0
15.61
14.23
14.65
14.21
Flow value (0.1 mm)
T0709
15∼40
35.1
27.6
28.8
30.4
Residual stability (%)
T0709
≥80
97.4
94.6
90.3
93.6
Tensile strength ratio of freeze-thaw splitting (%)
T0729
≥75
95.3
89.6
92.5
88.5
Note. Residual stability is the ratio of Marshall stability of water intrusion to standard Marshall stability; tensile strength ratio of freeze-thaw splitting is the ratio of the splitting strength of Marshall specimens subjected to freeze-thaw cycles to that of standard Marshall specimens.
