GP high-viscosity additive is a high-viscosity asphalt modifier independently developed relying on the National Engineering Laboratory. It features high dispersion, high viscosity and high toughness. The high-viscosity asphalt mixture prepared with it exhibits excellent anti-stripping performance, water resistance and weather resistance, which greatly enhances pavement durability. It can be used for constructing drainage, anti-skid and noise-reducing pavements (OGFC, PAC, PA), colored permeable asphalt pavements, steel bridge deck surfacing, high-viscosity high-elasticity SMA pavements, stress absorption layers and other structures.
1. Dynamic viscosity of high‑viscosity asphalt reaches over 580,000
2. Independently developed and manufactured to ensure stable and reliable quality
3. Provide process consultation combined with structural design and mix proportion optimization
4. High melt index, easy dispersion and dissolution, bonding asphalt and aggregate tightly
GP High Viscosity Modifier
| Test Item |
Measured Value |
Index |
| Appearance |
Yellow |
/ |
| Melt Index (g/min) |
9.5 |
≥2 |
| Particle Size (mm) |
3 |
≤5 |
| Density (g/cm³) |
0.95 |
0.7~1.0 |
GP High Viscosity Asphalt
| Test Item |
Unit |
Technical Requirement |
Measured Value |
| Penetration (25℃) |
0.1mm |
≥40 |
48 |
| Softening Point |
℃ |
≥80 |
99 |
| Ductility (5℃) |
cm |
≥30 |
42 |
| Mass Change after TFOT |
% |
≤0.6 |
0.3 |
| Toughness & Tenacity (25℃) |
N·m |
≥25 |
28.5 |
| Toughness (25℃) |
N·m |
≥20 |
22.3 |
| Viscosity (60℃) |
Pa·s |
≥20000 |
＞580000 |
High Viscosity Asphalt Mixture
| Test Item |
Unit |
GP |
Domestic High Viscosity Modifier |
Imported High Viscosity Modifier |
Technical Requirement |
| Binder Drainage |
% |
0.13 |
0.68 |
0.72 |
≤0.8 |
| Cantabro Loss |
% |
13.3 |
14.0 |
12.7 |
≤15 |
| Immersed Cantabro Loss |
% |
6.1 |
10.6 |
8.8 |
≤20 |
| Residual Stability |
% |
92.1 |
90.0 |
90.9 |
≥85 |
| Freeze-Thaw Split Tensile Strength Ratio |
% |
85.0 |
82.9 |
83.7 |
≥80 |
| Dynamic Stability (Rut Test) |
cycles/mm |
7381 |
6798 |
7714 |
≥6000 |
| Low-Temperature Bending Strain |
με |
2952.9 |
2889.4 |
2946.2 |
≥2800 |
drainage asphalt pavement
high‑viscosity and high‑elasticity asphalt
ultra‑thin overlay
high‑elasticity SMA
Direct‑to‑mix type, the general dosage is 0.3‑0.5% by mass of asphalt mixture, and 8‑10% by mass of asphalt.
