Penetration Bitumen

For Bitumen is a non-crystalline viscous material, black or dark brown, which is substantially soluble in carbon disulphide (CS2), possessing adhesive and water-proofing qualities. It consists essentially of Hydrocarbons and would typically comprise at least 80% Carbon and 15% Hydrogen, the remainder being Oxygen, Sulfur, Nitrogen and traces of various metals. Penetration Grade Bitumen is commonly used in road surfacing, and some industrial applications. Additional processing yields other grades of bitumen products and their application. Penetration Test determines the hardness of Bitumen by measuring the depth ( in tenths of a mm) to which a standard, and loaded needle will vertically penetrate in 5 seconds, a sample of Bitumen maintained at a temperature of 25°C (77°F). Hence the softer the bitumen, the greater will be its number of penetration units. (80/100, 60/70, 40/50)

SPECIFICATION OF PENETRATION GRADE BITUMEN - Comparison table

PROPERTIES

GRADES STANDARD

SPECIFICATION

BITUMEN 80/100

BITUMEN 60/70

BITUMEN 40/50

ASTM / AASHTO

Specification Gravity
@25/25°C

1.01-1.06

1.00-1.05

1.00-1.05

D-70

Penetration@25°C

80/100

60/70

40/50

D-5

Softening Point°C

45/52

49/56

52/60

D-36

Ductility@25°C CMS

100 Min

100 Min

100 Min

D-113

Loss on Heating (wt)%

0.5 Max

0.2 Max

0.2 Max

D-6

Drop in Penetration After Heating %

20 Max

20 Max

20 Max

D-6 & D-5

Flash Point°C

225 Min

250 Min

250 Min

D-92

Solubility in CS@(wt)%

99.5 Max

99.5 Max

99.5 Max

D-4

Spot Test

Negative

Negative

Negative

-

Density@25°C

1.01/1.06

1.00/1.05

1.00/1.05

D70

 

30 / 40 Specification

TEST

LIMIT

TEST METHOD

Penetration@25°C (1/10mm)

30-40

ASTM D5

Ductility@25°C (cm)

>100

ASTM D113

Softening Point (°C)

46-54

ASTM D36

Loss On Heating (%WT)

0.2 Max

ASTM D6

Flash Point (°C)

>232°C

ASTM D92

Solubility in Trichloroethylene (WT %)

>99

ASTM D2024

Complies with

-

ASTM D946

 

50 / 70 Specification

TEST

LIMIT

TEST METHOD

Penetration@25°C (1/10mm)

50-70

ASTM D5

Ductility@25°C (cm)

>100

ASTM D113

Softening Point (°C)

46-54

ASTM D36

Loss On Heating (%WT)

0.2 Max

ASTM D6

Drop-in Penetration After Heating (%)

20 Max

ASTM D6 & D5

Flash Point (°C)

>250°C

ASTM D92

Solubility in CS2 (WT %)

>99.5

ASTM D2024

Density,25°C (g/cm3)

1.000/1.050

ASTM D70

Spot Test

Negative

A.A.S.H.O.T102

 

60 / 70 Specification

TEST

LIMIT

TEST METHOD

Penetration@25°C (1/10mm)

60-70

ASTM D5

Ductility@25°C (cm)

>100

ASTM D113

Softening Point (°C)

46-54

ASTM D36

Loss On Heating (%WT)

0.2 Max

ASTM D6

Drop-in Penetration After Heating (%)

20 Max

ASTM D6 & D5

Flash Point (°C)

>250°C

ASTM D92

Solubility in CS2 (WT %)

>99.5

ASTM D2024

Density,25°C (g/cm3)

1.01/1.06

ASTM D70

Spot Test

Negative

A.A.S.H.O.T102

 

80 / 100 Specification

TEST

LIMIT

TEST METHOD

Penetration@25°C, 100g, 5 S, (1/10mm)

80-100 / 85-100

ASTM D5

Ductility@25°C, 5 cm/min (cm)

>100

ASTM D113

Softening Point (°C)

42-52 / 45-52

ASTM D36

Loss On Heating (163°C-5H) (%WT)

0.5 Max

ASTM D6

Drop-in Penetration After Heating (%)

20 Max

ASTM D6 & D5

Loss of Weight (%)

<0.8

ASTM D1754

Retained Penetration (%)

>50

ASTM D5

Ductility 25°C

>100

ASTM D113

Ductility 15°C

>100

ASTM D113

Flash Point (°C)

>230°C

ASTM D92

Bitumen Content (WT %)

>99.5

ASTM D4

Solubility in T.C.E (WT %)

>99

ASTM D2024

Density,25°C (Kg/m2)

1.000/1.050

ASTM D70

 

85 / 100 Specification

TEST

LIMIT

TEST METHOD

Penetration@25°C, 100g, 5 S, (1/10mm)

80-100 / 85-100

ASTM D5

Ductility@25°C, 5 cm/min (cm)

>100

ASTM D113

Softening Point (°C)

42-52 / 45-52

ASTM D36

Loss On Heating (163°C-5H) (%WT)

0.5 Max

ASTM D6

Drop-in Penetration After Heating (%)

20 Max

ASTM D6 & D5

After Thin Film Oven Test (163°C,5H)

- -

Loss of Weight (%)

<0.8

ASTM D1754

Retained Penetration (%)

>50

ASTM D5

Ductility 25°C

>100

ASTM D113

Ductility 15°C

>100

ASTM D113

Flash Point (°C)

>230°C

ASTM D92

Bitumen Content (WT %)

>99.5

ASTM D4

Solubility in T.C.E (WT %)

>99

ASTM D2024

Density,25°C (Kg/m2)

1.000/1.050

ASTM D70

Temperature (°C)

Max 90-110 above the Soft

-

 

Bitumen Class 170,320 and 600

Description:

Paving grade bitumen manufactured to a tighter specification than prescribed in AS 2008 and is suitable for standard sealing and lightly trafficked asphalt applications. 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.

Application:

Class 170is widely used in sprayed sealing and light asphalt applications to provide durability and fatigue resistance. It is also used to manufacture cutback bitumen, bitumen emulsions and modified bitumen. Class 320 is most commonly used to manufacture asphalt mixes while Class 600 is primarily used to manufacture extra heavy-duty asphalt pavements that need to endure substantial traffic loadings.

PROPERTIES

RANGE

SPECIFICATION

Class 170

Class 320

Class 600

Viscosity@60°C, Pa.s

170

320

600

Viscosity@135°C, Pa.s

0.40

0.53

0.80

Viscosity@60°C after RTFO, Pa.s

300

640

1300

Penetration@25°C, dmm

70

46

27

Flash Point (°C)

360

360

360

Viscosity of Residue@60°C % of original

180

200

215

Density@15°C, kg/m3

1.04

1.04

1.04

     

 

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