As same as W-Mastic Type I, it is a gap graded modified asphalt mixture in which plant fibers are added.| The characteristics are that it contains more coarse aggregates and more binder. Therefore, the characteristics featured by water protectivity, high flexibility, rutting resistance, raveling resistance are all same. The difference is that the maximum aggregate size in W-Mastic Type I is as small as 5 mm and therefore thin layer paving is possible. |  | |
- Excellent at raveling resistance and flexibility and cracks are hard to be generated.
- Excellent at durability and water protectivity.
- Excellent at rutting resistance.
- Having rough surface texture, skid resistance is large.
- As the modifier and plant fiber are mixed at mixing plant, small amount of production is possible>
| - For leveling on concrete slabs on large spanned bridges where large deformation and vibration is estimated.
- For thin layer overlay on comparatively heavy trafficked roads.
- For leveling and overlay on pavements with reflection cracks.
| |
| Fig. 1 Result of Wheel Tracking Test 
| Fig. 2 Result raveling Test 
| |
| Low Temperature Flexibility | |
Fig. 3 Result of Flexural Test
(-10°C below 0)
| Fig. 4 Result of Water Permeability Test 
| |
| Properties at Marshall Tests | |
Table 1 Results of Marshall TestsOptimum
binder content
(%) | Density (g/cm3) | Air
voids(%) | Satu-
ration(%) | Sta-
bil-
ity
(kg) | Flow
1/
100
cm | | 8.0 | 2.337 | 3.0 | 85.2 | 765 | 36.4 | |
| | Fig. 5 Standard Gradation
 | |
|