Cascadian Paving Grade Bitumen Class 170, Class 320

Cascadian Paving Grade Bitumen

Class 170, Class 320, Class 600

(Certified by SGS Testing & Control Services Singapore Pte Ltd)
 

 

Most high performing roads in Australia are built and maintained using bitumen because it is durable and has exceptional waterproofing and adhesive properties. Bitumen used in road construction and maintenance are refined and blended to meet strict road engineering requirements and industry specifications.

Paving grade bitumen’s are categorized according to viscosity (degree of fluidity) grading’s. The higher the grade, the stiffer the bitumen.

Bitumen Class 170

Class 170 is widely used in sprayed sealing and light asphalt applications to provide durability and fatigue resistance.  It is also used to manufacture cutback bitumen’s, bitumen emulsions and modified bitumen’s.

Bitumen Class 320

Class 320 is most commonly used to manufacture asphalt mixes. Due to its higher viscosity, stiffer asphalt mixes can be produced to improve resistance to shoving and other problems associated with higher temperature and traffic loads.

Bitumen Class 600

Class 600 is primarily used to manufacture extra heavy-duty asphalt pavements that need to endure substantial traffic loadings.

 

Applications 

The table below shows typical applications for paving grade bitumen’s:

 

 

 

Applications
Bitumen Class	Sprayed Sealing	Asphalt
		Light	Medium	Heavy	Extra Heavy
Class 170
Class 320
Class 600

 

 

Bitumen is recognized nationally for its proven track record in delivering products of consistently high quality. Every day out products perform under the most diverse and demanding road conditions in Australia.  This is attributable to a combination of out unique product technology; comprehensive quality assurance programs; operational efficiency and sophisticated production processes- all supported by out highly skilled and experienced staff.

Our product quality management practices reflect out commitment to delivering the highest quality products that perform on the road.

Storage & Handling

The Storage of bitumen’s for prolonged periods at elevated temperatures should be elevated temperatures should be avoided as quality may be adversely affected. As a general rule, bitumen should be stored at the lowest temperature that enables practical use.

For normal operations, such as blending and transferring liquid bitumen, temperatures of 10ºC to 40ºC above the minimum pumping temperature are recommended.

 

 

 

 

 

 

 

 

Storage & Handling Temperature Recommendations
	Bitumen Class 170	Bitumen Class 320	Bitumen Class 600
Storage up to 30 days	135-145oC	135-145oC	135-145oC
Storage for up to 14 days	155-165oC	155-165oC	155-165oC
Storage for up to 7 days	170-180oC	170-180oC	170-180oC
Maximum temperature	190oC	190oC	190oC
Minimum pumping temperature	135oC	145oC	155oC

Application Temperature Recommendations
	Bitumen Class 170	Bitumen Class 320	Bitumen Class 600
Asphalt mixing	150-160oC	155-165oC	165-175oC
Asphalt compaction	135-150oC	140-155oC	150-165oC
Sprayed sealing	175-185oC	180-190oC	N/A

 

Bitumen Class 170, Class 320 and Class 600 bitumen’s are manufactured to comply with the requirements of Australian Standard As2008 Residual bitumen’s for pavements.
 

 

 

 

 

 

 

Property	Typical Value
	Bitumen Class 170	Bitumen Class 320	Bitumen Class 600
Viscosity at 60oC, pa.s	170	320	600
Viscosity  at 135oC Pa.s	0.40	0.53	0.80
Viscosity at 60oC after RTFO, Pa.s	300	640	1300
Penetration at 25oC, dmm	70	46	27
Flashpoint, oC	360	360	360
Viscosity of Residue at 60oC % of original	180	200	215
Density at 15oC, kg/m3	1.04	1.04	1.04