Home معدل البوليمر (PMB)
محسّن بإضافات البوليمر، يتميز البيتومين المعدل بالبوليمر (PMB) بأداء متفوق مثل تحسين المرونة، مقاومة التآكل والتشقق، وزيادة المتانة. يُستخدم عادةً في تطبيقات الطرق ذات الإجهاد العالي وفي تصميمات الرصف المتخصصة.
|
No.
|
Test Type
|
Specifications for Type II PG 70 &76 Modified Asphalt |
Test Method
|
Test results | |
| PG70 | PG76 | PG 70&76 | |||
| Original Binder | |||||
| 1 | Penetration on 25 °C, 0.1mm | Reported | Reported | ASTM D5 | 41 |
| 2 | Softening Point, °C | Reported | Reported | ASTM D36 | 59 |
| 3 | Flash Point (COC), °C | ≥ 230 | ≥ 230 | ASTM D92 | 332 |
| 4 | Ductility, Cm | – | – | ASTM D113 | 96 |
| 5 | Solubility in Trichloroethylene, % | ≥ 99 | ≥ 99 | ASTM D2042 | 99.1 |
| 6 | Specific Gravity of Hard Bitumen, gr/ml | – | – | ASTM D70 | 1.014 |
| 7 | Storage Stability (Softening Point Diff.), °C | ≤ 2.2 | ≤ 2.2 | ASTM D 5976-87 | 1.8 |
| 8 | Kinematic Viscosity at 135°C, Cst | ≤ 3000 | ≤ 3000 | AASHTO T316-13 | 1191 |
| 9 | DSR Original Binder Fail Temperature, °C | Min 70 | Min 76 | AASHTO T 315-12 | 76.5 |
| After RTFO Test | |||||
| 1 | Weight Loss (RTFOT), % | ≤ 0.8 | ≤ 0.8 | AASHTO T240 | 0.07 |
| 2 | Penetration Return at 25°C after RTFOT, % | ≥ 54 | ≥ 54 | ASTM D5 | 73 |
| 3 | Ductility after RTFOT, Cm | ≥ 50 | ≥ 25 | ASTM D113 | 59 |
| 4 | DSR (RTFOT) Fail Temperature, °C | Min 70 | Min 76 | AASHTO T 315-12 | 76 |
| 5 | DSR MSCR (RTFOT) (Jnr 3.2) at 70ᴼC | – | – | AASHTO T350-14 | 1.38 |
| 6 | DSR MSCR (RTFOT) (Jnr diff) at 70ᴼC | – | – | AASHTO T350-14 | 80.3 |
| After PAV Test | |||||
| 1 | DSR PAV @ 5000 kPa Fail Temperature, °C | Max 31 | Max 34 | AASHTO T 315-12 | 28 |