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Nakhle Barani Pardis (Since 1997)



Iran  Bitumen Pasargad

Using recycled rubbers in bitumen production will be of great help to the environment while it will help improve the mechanical specifications of bitumen to make asphalt more resistant. The R&D unit of Pasargad Oil Company has developed a formula for the production of Crumb Rubber Modified Bitumen (CRMB) which would contribute to more durable roads.

 

Pasargad Bitumen

Test

Methodology

30-40

40-50

60-70

85-100

100-120

Density

ASTM D‐7

06/1-01/1

06/1-01/1

06/1-01/1

5 0/1-1

04/1-01/1

Penetration Rate at 25ºC

ASTM D‐5

40-30

50-40

70-60

100-85

120-100

Softening Point ºC

ASTM D‐36

63- 55

60-52

56-49

52- 45

49-42

Ductility at 25 ºC (cm)

ASTM D‐113

Min 100

Min 100

Min 100

Min 100

Min 100

Flash Point ºC

ASTM D‐92

Min250

Min250

Min250

Min250

Min250

Solubility in Disulfide %wt

ASTM D‐4

5.99

5.99

5.99

5.66

5.99

Stain Test

AASHTO T 102

Negative

Negative

Negative

Negative

Negative

Weight Loss by Heating %wt

ASTM D‐6

Max 2 /0

Max 2 /0

Max 2 /0

Max 2 /0

Max 2 /0

Penetration Loss by Heating %

ASTM D‐6-D-5

20 Max

20 Max

20 Max

20 Max

20 Max