Cut Back Bitumen

August 6, 2019
9 minutes

What is Cutback Bitumen?

The industry is sometimes in need of low viscosity bitumen. There manufacturers came to a solution to deliver cutback bitumen which is a low viscosity liquid dissolved in a solvent. The main advantage of this type of bitumen is that there is no need to heat it before using.

Cutback bitumen is made by the addition of controlled amounts of petroleum extracts such as kerosene, naphtha, diesel oil, and furnace oil to perform as a solvent.

Although these adhesive materials are added to lessen the need for heating before using, they will evaporate as the bitumen is applied. This process is done for a temporary reduction of the bitumen viscosity.

Cutback bitumen is more appropriate for cold regions than the others. Primer sealing and sprayed sealing are some items for which cutback bitumen is suitable.

In the Types of Bitumen Used for Road Construction, you can read more about different grades of cut back bitumen that are used in these asphalts to maintain the road from damages.

A short comparison between Bitumen, Cutback, and Emulsion

Bitumen should have been heated before application, to lower its viscosity rate.

Cutback bitumen offers some advantages over other types of bitumen. After the production of this low viscosity bitumen, the heating operation was put aside. Because the volatile solvents in cutback bitumen met the need for heating by alleviating its viscosity.

The only concern was the harm that cutback bitumen had, to the environment. The volatile solvents were noxious to nature, human and environment.

Then the Emulsifiers and Bitumen Emulsion came to the industry. Not only were they considered as in-noxious and safe materials since only water evaporated, but also they were energy efficient.

Must read: Advantages of bitumen emulsion to cut backs

SC

Cutback Bitumen Slow Curing, Sc is also known as road oil, is a residual substance which is obtained from the fractional distillation of specific crude petroleum. SC grades are 30, 70, 250, 800 and 3000 as follow:

SC 30

Cutback Bitumen Slow-Curing-30 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST3060ASTM D2170
Flash point(tag open cup), °C65ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 190 °CASTM D402
To 225 °C
To 260 °C
To 316 °C1030
Residue from Distillation to 60 °C
Penetration 77°F (25°C) 100g, 5s mm50ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %100ASTM D2042
Water, percent volume0.2ASTM D95

SC70

Cutback Bitumen Slow-Curing-70 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST70140ASTM D2170
Flash point(tag open cup), °C60ASTM D3143
Distillate Test
Total distillate to 360 °C (680 °F), volume %35ASTM D402
Solubility in trichloroethylene %95
Kinematic viscosity on distillation residue at 60 °C (140 °F) mm2 /s2007000
Asphalt Residue
Residue of 100 penetration, %40ASTM D5
Ductility 77°F (25°C) 5cm/min cm50ASTM D113
Water, percent volume0.5ASTM D95

SC250

Cutback Bitumen Slow-Curing-250 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST250500ASTM D2170
Flash point(tag open cup), °C60ASTM D3143
Distillate Test
Total distillate to 360 °C (680 °F), volume %25ASTM D402
Solubility in trichloroethylene %95
Kinematic viscosity on distillation residue at 60 °C (140 °F) mm2 /s40010000
Asphalt Residue
Residue of 100 penetration, %50ASTM D5
Ductility 77°F (25°C) 5cm/min cm50ASTM D113
Water, percent volume0.5ASTM D95

SC800

Cutback Bitumen Slow-Curing-800 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST8001600ASTM D2170
Flash point(tag open cup), °C70ASTM D3143
Distillate Test
Total distillate to 360 °C (680 °F), volume %15ASTM D402
Solubility in trichloroethylene %95
Kinematic viscosity on distillation residue at 60 °C (140 °F) mm2 /s100016000
Asphalt Residue
Residue of 100 penetration, %60ASTM D5
Ductility 77°F (25°C) 5cm/min cm50ASTM D113
Water, percent volume0.5ASTM D95

SC3000

Cutback Bitumen Slow-Curing-3000 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST30006000ASTM D2170
Flash point(tag open cup), °C70ASTM D3143
Distillate Test
Total distillate to 360 °C (680 °F), volume %8ASTM D402
Solubility in trichloroethylene %95
Kinematic viscosity on distillation residue at 60 °C (140 °F) mm2 /s200035000
Asphalt Residue
Residue of 100 penetration, %75ASTM D5
Ductility 77°F (25°C) 5cm/min cm50ASTM D113
Water, percent volume0.5ASTM D95

MC

Cutback bitumen medium curing, MC, is a chemical combination of asphalt cement and petroleum solvent.

MC bitumen is widely used in tack coats, fog seals, slurry seals, and stabilizers. Mc grades have a high prioritized place in the Kenya market.

This bitumen grade is widely applied in many countries, especially East African countries such as Kenya and Tanzania.

Infinity Galaxy has successfully exported MC30 cutback bitumen and other MC grades monthly to eminent customers of these countries.

Are you looking for a bitumen supplier in Kenya? Click on Bitumen Supplier in Kenya to find out more.

Important to say that, exporting MC30 to Mombasa port of Kenya necessitates having PVOC (Pre-Export Verification of Conformity) and GIS (Government and Institution Services) documents, and the drums specific marking approved by Mombasa customs. On the contrary, for the export to other East African countries, PVOC and GIS are not required. Only the SGS inspection report is sufficient for the goods entrance.

To know more information about export documents click here.

Infinity Galaxy supplies Bitumen MC Grades in drums with 10 mm thickness to prevent any leakage. MC grades are as follow:

MC 30

Cutback Bitumen Medium-Curing-30 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic Viscosity at 60 °C ,cSt3060ASTM D2170
Flash Point (Top Open Cup), °C38ASTM D3143
Water Content (% Vol)0.2ASTM D95
Distillate, %Volume of Total Distillate to @360 °C
To 225 °C25ASTM D402
To 260 °C4075
To 316 °C7593
Residue From Distillation to 360 °C (% Vol by Difference)50
Penetration, 25 °C, (dmm)120300ASTM D5
Ductility, 25 °C, (cm)100ASTM D113

MC 70

Cutback Bitumen Medium-Curing-70 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic Viscosity at 60 °C , mm2/s70140ASTM D2170
Flash Point (Tag Open Cup), °C38ASTM D3143
Distillate, %Volume of Total Distillate to @360 °C
To 225 °C25ASTM D402
To 260 °C1070ASTM D402
To 316 °C7593ASTM D402
Residue From Distillation to 360 °C (% Vol by Difference)55ASTM D402
Test On Residue from Distillation:
Penetration, 25 °C, (dmm)120300ASTM D5
Ductility, 25 °C, (cm)100ASTM D113
Solubility in Trichloroethylene, %99ASTM D2042
Water , %0.2ASTM D95

MC 250

Cutback Bitumen Medium-Curing-250 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST250500ASTM D2170
Flash point(tag open cup), °C66ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)20ASTM D402
to 500°F (260°C)555
to 600°F (316°C)6090
to 680°F (360°C), per cent volume by difference67
Test on residue from distillation test
Viscosity at 140°F (60°C)30120ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm120300ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

MC 800

Cutback Bitumen Medium-Curing-800 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST8001600ASTM D2170
Flash point(tag open cup), °C66ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)ASTM D402
to 500°F (260°C)40
to 600°F (316°C)4590
to 680°F (360°C), per cent volume by difference75
Test on residue from distillation test
Viscosity at 140°F (60°C)30120ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm120250ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

MC 3000

Cutback Bitumen Medium-Curing-3000 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic Viscosity at 60 °C , mm2/s30006000ASTM D2170
Flash Point (Tag Open Cup), °C66ASTM D3143
Distillate, %Volume of Total Distillate to @360 °C
To 225 °CASTM D402
To 260 °C15ASTM D402
To 316 °C1575ASTM D402
Residue From Distillation to 360 °C (% Vol by Difference)800ASTM D402
Test On Residue from Distillation:
Viscosity at 60 °C30120ASTM D2170
Penetration, 25 °C, (dmm)120250ASTM D5
Ductility, 25 °C, (cm)100ASTM D113
Solubility in Trichloroethylene, %99ASTM D2042
Water , %0.2ASTM D95

RC

Cutback bitumen Rapid Curing, RC, is a petrochemical mixture of solvent as naphtha or gasoline and bitumen. RC grades are as come below:

RC 30

Cutback Bitumen Rapid-Curing-30 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST3060ASTM D2170
Flash point(tag open cup), °CASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)55ASTM D402
to 500°F (260°C)75
to 600°F (316°C)90
to 680°F (360°C), per cent volume by difference50
Test on residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm80120ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

RC 70

Cutback Bitumen Rapid-Curing-70 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST70140ASTM D2170
Flash point(tag open cup), °CASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)50ASTM D402
to 500°F (260°C)70
to 600°F (316°C)85
to 680°F (360°C), per cent volume by difference55
Test on residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm80120ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

RC 250

Cutback Bitumen Rapid-Curing-250 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST250500ASTM D2170
Flash point(tag open cup), °CASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)35ASTM D402
to 500°F (260°C)60
to 600°F (316°C)80
to 680°F (360°C), per cent volume by difference65
Test on residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm80120ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

RC 800

Cutback Bitumen Rapid-Curing-800 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST8001600ASTM D2170
Flash point(tag open cup), °CASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)15ASTM D402
to 500°F (260°C)45
to 600°F (316°C)75
to 680°F (360°C), per cent volume by difference75
Test on residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm80120ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

RC 3000

Cutback Bitumen Rapid-Curing-3000 Specifications
PropertiesSpecification LimitTest Method
MinMax
Kinematic viscosity at 60°c ,cST30006000ASTM D2170
Flash point(tag open cup), °CASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)ASTM D402
to 500°F (260°C)25
to 600°F (316°C)70
to 680°F (360°C), per cent volume by difference80
Test on residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm80120ASTM D5
Ductility 77°F (25°C) 5cm/min cm100ASTM D113
Solubility in trichloroethylene %99ASTM D2042
Water, percent volume0.2ASTM D95

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August 6, 2019
9 minutes
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