PG 64-22 is a performance grade bitumen(PG), PG is a type of bitumen which is designed by its performance at different temperatures. The grade of this bituminous asphalt consist of two parts in notation,
The first number is high pavement temperature the second number is the low pavement temperature. The minimum pavement temperature is used to prevent thermal cracking in cold weather condition. Performance grade binder PG 64-22 mean it can 7 days meet maximum pavement temperature of 64°C and minimum pavement temperature of -22°C so it can be used in very cold areas.
| PG 64-22 Bitumen Specifications | |||
| Property | PG64-22 | Test Method | |
| Average 7-day maximum pavement Design Temperature, °C | 64 | ||
| minimum pavement Design Temperature, °C | > -22 | ||
| Original Binder | |||
| Flash Point Temperature Minimum °C | 230 | AASHTO T48 | |
| Viscosity maximum 3 Pa.s, Test Temperature, °C | 135 | AASHTO T316 | |
| Dynamic Shear G*/sin minimum 2.2 KPa Test Temperature, °C | 64 | AASHTO T315 | |
| Rolling Thin Film Oven Test | |||
| Mass change maximum percent | 1 | AASHTO T240 | |
| Dynamic Shear G*/sin minimum 2.2 KPa Test Temperature, @ 10 rad/s °C | 64 | AASHTO T315 | |
| Pressure Aging Vessel | |||
| PAV aging Temperature, °C | 100 | AASHTO R28 | |
| Dynamic Shear G*/sin maximum 5000 KPa Test Temperature, @ 10 rad/s °C | 25 | AASHTO T315 | |
| Creep Stuffiness S maximum 300 Mpa m-value minimum 0.300 Test Temperature,@ 60s °C | -12 | AASHTO T313 | |
| Direct Tension Failure strain minimum 1 % Test Temperature @ 1mm/min, °C | -12 | AASHTO T314 | |
| Critical low cracking Temperature Critical cracking determined by PP42 Test Temperature | -12 | AASHTO PP42 | |