Penetration Grade Bitumen
Bitumen is produced from heavier components of crude oil which is also called the “residue” of distillation process. It’s composed of complex hydrocarbons and contains elements such as calcium, iron, sulfur, and oxygen. There is also a kind of naturally occurring bitumen which is the remaining of migrated crude oil with very huge molecules of hydrocarbon.
Viscosity Grade Bitumen
Bitumen is produced from heavier components of crude oil which is also called the “residue” of distillation process. It’s composed of complex hydrocarbons and contains elements such as calcium, iron, sulfur, and oxygen. There is also a kind of naturally occurring bitumen which is the remaining of migrated crude oil with very huge molecules of hydrocarbon.
Oxidized Bitumen
Bitumen is graded based on absolute viscosity 60°C or kinematatic viscosity at 135°C.
The SI physical unit of dynamic viscosity is poise and kinematic viscosity is expressed in centi stokes
Pure bitumen has been graded based on AASHTO-M226 and ASTM-D3381 standards
Tables 1-1 to 1-6 indicate tests and criteria
The SI physical unit of dynamic viscosity is poise and kinematic viscosity is expressed in centi stokes
Pure bitumen has been graded based on AASHTO-M226 and ASTM-D3381 standards
Tables 1-1 to 1-6 indicate tests and criteria