Page 376 - Mechanics of Asphalt Microstructure and Micromechanics

368 Ch a p t e r E l ev e n

Lab Compaction Curve
100
98
96
94
%Gmm 92

90
88
86
84
82
1 10 100 1000
No. of Gyrations
FIGURE 11.1 Idealized typical gyratory compaction curve.

incremental volumetric strain is equal to the incremental vertical strain Δe z . This view is
very important in that it relates the change of a physical parameter (air void content) to
the mechanical parameter of volumetric strain and 1D strain, which allows researchers
to further associate it to dissipated strain energy, constitutive modeling, and field com-
paction on the basis of rigorous mechanics principles.

Lab Compaction Curve
18
16
14
%Air Void Content 10 8
12

4 6
2
0
1 10 100 1000
No. of Gyrations

FIGURE 11.2 Air void reduction in the compaction process.