Bitumen Class 320

Bitumen Class 320 or C320, is a viscosity-graded bitumen with a viscosity of 320 Poise at 60°C. It is classified as a harder bitumen, providing greater resistance to deformation under heavy traffic and in warm climates. This makes it suitable for demanding applications where high loads and temperature extremes are common.

Appearance: Black solid or a viscous liquid
Standards: AS 2008-2013
HS Code: 27132000

Package: Bitumen are packed in

New Steel Drums of 200Kg / 180Kg / 156Kg / Customized
Jumbo Bags of 1Ton
Bulk Vessel / Bitumen Tank Container

Bitumen Class 320 (AS 2008-2013) - Technical Specifications

Properties	Units	Limits	Test Methods
Absolute viscosity at 60°C	P	260-380	ASTM D2171
Kinematic viscosity at 135°C	cSt	0.4-0.65	ASTM D2170
Penetration @25°C (77°F), 100gm, 5sec	0.1MM	Min 40	ASTM D5
Flash Point	°C	Min 250	ASTM D92
Matter insoluble in toluene	%Wt	Max. 1.0	ASTM D4072
After Rolling Thin-Film Oven Test (RTFO)			ASTM D1754
Viscosity of residue at 60°C (% of original)	Pa.s	Max 300	ASTM D2171

*As per Australian Standards AS 2008-2013

Main Applications Of Bitumen Class 320

The main applications of Bitumen Class 320 involve areas where high traffic loads, heavy-duty conditions, and warm climates require a bitumen with high resistance to deformation and wear. Its viscosity of 320 Poise at 60°C makes it ideal for demanding environments.

Highways and Major Roads: Bitumen Class 320 is extensively used in the construction of major roads, highways, and freeways where heavy traffic and frequent vehicle movement create the need for a durable surface resistant to rutting and deformation.
Industrial Roads and Heavy-Load Areas: Suitable for industrial zones, freight terminals, and loading areas where heavy trucks, machinery, and equipment exert continuous pressure on the pavement. Its high viscosity ensures stability under these extreme loads.
Warm Climate Regions: Class 320 is often applied in regions with high ambient temperatures where softer bitumen grades may deform. Its resistance to softening makes it ideal for hot climates, maintaining its structural integrity in such conditions.
Airport Runways and Taxiways: Used in the construction of airport runways, taxiways, and aprons, where it provides resistance to the weight and stress from aircraft operations. Its hardness ensures durability under the high impact of landing and takeoff.
Heavy-Duty Pavements: Applied in truck stops, bus depots, and parking lots for heavy vehicles. Its stiffness helps withstand the impact of braking, turning, and constant heavy loading, preventing surface wear and rutting.
Intersections, Roundabouts, and Sharp Curves: Class 320 is often used in areas of high-stress on roads, such as roundabouts, intersections, and sharp curves, where vehicles decelerate, accelerate, and make sharp turns. These actions increase surface stress, making deformation resistance crucial.

Bitumen Class 320 is primarily used for highways, major roads, industrial pavements, and airport infrastructure. Its high viscosity and hardness provide superior resistance to rutting, deformation, and temperature extremes, making it suitable for regions with heavy traffic and high temperatures.

Various Packing Method for Bitumen

Packing bitumen is an essential process to ensure its safe transportation, storage, and handling. The method of packing often depends on the type of bitumen, the transportation method, and the end-use. Here are the various methods used to pack bitumen: