Durability Capacity Change of Rubber Powder Composite BRA Modified Asphalt Mixture
Table 5
Determination of residual stability in each group.
Technical parameters
1
2
3
4
5
6
Benchmark mixture
BRA modification
BRA+1# glue powder modification
BRA+2# glue powder modification
BRA+3# glue powder modification
BRA+4# glue powder modification
0.5 h stability (kN)
9.05
11.24
10.09
12.75
11.87
13.41
0.5 h stream value/mm
3.26
2.44
2.99
2.95
3.14
2.87
48 h stability (kN)
7.35
10.45
8.32
10.75
9.95
11.75
48 h stream value/mm
3.68
2.56
3.32
3.18
3.32
3.21
Residual stability (%)
81.22
92.97
82.43
84.31
83.82
87.62
Remarks
The residual stability of modified asphalt mixture required by the current technical specification for highway asphalt pavement construction is not less than 85%.
