Cutback Bitumen

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.

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 innoxious and safe materials since only water evaporated, but also they were energy efficient.

 

 

 

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 petroleums. SC grades are 30, 70, 250, 800 and 3000 as follow:

SC 30
Cutback Bitumen Slow-Curing 30 Specifications
PROPERTIES MIN MAX TEST METHOD
KINEMALIC 1 VISCOSITY AT 60°C, EST 30 60 ASTM D2170
FLASH POINT (TAG OPEN-CUP),°C 65 ASTM D1310
DISTILLATE TEST 2
DISTILLATE, PERCENT BY VOLUME OF TOTAL 360°C
TO 190°C ASTM D402
TO 225°C ASTM D402
TO 260°C ASTM D402
TO 316°C 10 30 ASTM D402
RESIDUE FROM DISTILLATION TO 60°C                 250      5000
TEST ON RESIDUE FROM

DISTILLATION PENETRATION AT
25°C,100G, 5 SEC.

50
DUCTILITY 3 AT 25°C, CM 100 ASTM D402 / ASTM D113
SOLUBILITY IN TRICHLOROETHYLENE, PERCENT MASS 100 ASTM D402 / ASTM D2024
WATER, PERCENT VOLUME 0.2 ASTM D95
SC 70
Cutback Bitumen Slow-Curing 70 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C (140°F), mm²/s 70 140 ASTM D2170
Flashpoint (Cleveland open cup), °C  60  — ASTM D92
Distillate test
Total distillate to 360°C (680°F), volume % 35 ASTM D402
Solubility, % 95 ASTM D2024
Kinematic viscosity on distillation residue at 60°C (140°F), mm²/s 200  7000 ASTM D2170
Asphalt residue
Residue of 100 penetration, % 40 ASTM D243
Ductility of 100 penetration residue at 25°C (77°F), cm 50 ASTM D113
Water, % 0.5 ASTM D95
SC 250
Cutback Bitumen Slow-Curing 250 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C (140°F), mm²/s 250 500 ASTM D2170
Flashpoint (Cleveland open cup), °C  60  — ASTM D92
Distillate test
Total distillate to 360°C (680°F), volume % 25 ASTM D402
Solubility, % 95 ASTM D2024
Kinematic viscosity on distillation residue at 60°C (140°F), mm²/s 400 10000 ASTM D2170
Asphalt residue
Residue of 100 penetration, % 50 ASTM D243
Ductility of 100 penetration residue at 25°C (77°F), cm 50 ASTM D113
Water, % 0.5 ASTM D95
SC 800
Cutback Bitumen Slow-Curing 800 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C (140°F), mm²/s 800 1600 ASTM D2170
Flashpoint (Cleveland open cup), °C  70  — ASTM D92
Distillate test
Total distillate to 360°C (680°F), volume % 15 ASTM D402
Solubility, % 95 ASTM D2024
Kinematic viscosity on distillation residue at 60°C (140°F), mm²/s 1000 16000 ASTM D2170
Asphalt residue
Residue of 100 penetration, % 60 ASTM D243
Ductility of 100 penetration residue at 25°C (77°F), cm 50 ASTM D113
Water, % 0.5 ASTM D95
SC 3000
Cutback Bitumen Slow-Curing 3000 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C (140°F), mm²/s 3000 6000 ASTM D2170
Flashpoint (Cleveland open cup), °C  70  — ASTM D92
Distillate test
Total distillate to 360°C (680°F), volume % 8 ASTM D402
Solubility, % 95 ASTM D2024
Kinematic viscosity on distillation residue at 60°C (140°F), mm²/s 2000 35000 ASTM D2170
Asphalt residue
Residue of 100 penetration, % 75 ASTM D243
Ductility of 100 penetration residue at 25°C (77°F), cm 50 ASTM D113
Water, % 0.5 ASTM 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 and other MC grades monthly to eminent customers of these countries. 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. 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
Properties Specification Limit  Test method
Min Max
Kinematic viscosity at 60°c ,cST 30 60 ASTM D2170
Flash point(tag open cup), °C 38 ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)

to 500°F (260°C)

to 600°F (316°C)

to 680°F (360°C), per cent volume by difference

25 ASTM D402
30 75
75 95
50
Test on residue from distillation test
Viscosity at 140°F (60°C) 30 120 ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm 120 300 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100 ASTM D113
Solubility in trichloroethylene % 99 ASTM D2042
Water, percent volume 0.2 ASTM D95
MC 70
Cutback Bitumen Medium-Curing-70 Specifications
Properties Specification Limit Test method
Min Max
Kinematic viscosity at 60°c ,cST 70 140 ASTM D2170
Flash point(tag open cup), °C 38 ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)

to 500°F (260°C)

to 600°F (316°C)

to 680°F (360°C), per cent volume by difference

20 ASTM D402
10 70
65 93
55
Test on residue from distillation test
Viscosity at 140°F (60°C) 30 120 ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm 120 300 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100 ASTM D113
Solubility in trichloroethylene % 99 ASTM D2042
Water, percent volume 0.2 ASTM D95
MC 250
Cutback Bitumen Medium-Curing-250 Specifications
Properties Specification Limit  Test method
Min Max
Kinematic viscosity at 60°c ,cST 250 500 ASTM D2170
Flash point(tag open cup), °C 66 ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)

to 500°F (260°C)

to 600°F (316°C)

to 680°F (360°C), per cent volume by difference

20 ASTM D402
5 55
60 90
67
Test on residue from distillation test
Viscosity at 140°F (60°C) 30 120 ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm 120 300 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100 ASTM D113
Solubility in trichloroethylene % 99 ASTM D2042
Water, percent volume 0.2 ASTM D95
MC 800
Cutback Bitumen Medium-Curing-800 Specifications
Properties Specification Limit  Test method
Min Max
Kinematic viscosity at 60°c ,cST 800 1600 ASTM D2170
Flash point(tag open cup), °C 66 ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)

to 500°F (260°C)

to 600°F (316°C)

to 680°F (360°C), per cent volume by difference

ASTM D402
40
45 85
75
Test on residue from distillation test
Viscosity at 140°F (60°C) 30 120 ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm 120 250 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100 ASTM D113
Solubility in trichloroethylene % 99 ASTM D2042
Water, percent volume 0.2 ASTM D95
MC 3000
Cutback Bitumen Medium-Curing-3000 Specifications
Properties Specification Limit  Test method
Min Max
Kinematic viscosity at 60°c ,cST 3000 6000 ASTM D2170
Flash point(tag open cup), °C 66 ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
Residue from distillation to 437°F (225°C)

to 500°F (260°C)

to 600°F (316°C)

to 680°F (360°C), per cent volume by difference

ASTM D402
15
15 75
80
Test on residue from distillation test
Viscosity at 140°F (60°C) 30 120 ASTM D2170
Penetration 77°F (25°C) 100g, 5s mm 120 300 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100 ASTM D113
Solubility in trichloroethylene % 99 ASTM D2042
Water, percent volume 0.2 ASTM 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
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C, cST 30 60 ASTM D2170
Flashpoint (tag open cup), °C ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 437°F (225°C)

To 500°F (260°C)

To 600°F (316°C)

To 680°F (360°C)

 

 

55 ASTM D402
  75
  90
  50
Test on Residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm 80 120 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100  — ASTM D113
Solubility in trichloroethylene % 99  — ASTM D2042
Water, per cent volume  — 0.2 ASTM D95
RC 70
Cutback Bitumen Rapid-Curing-70 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C, cST 70 140 ASTM D2170
Flashpoint (tag open cup), °C ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 437°F (225°C)

To 500°F (260°C)

To 600°F (316°C)

To 680°F (360°C)

 

 

50 ASTM D402
70
 85
55
Test on Residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm 80 120 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100  — ASTM D113
Solubility in trichloroethylene % 99  — ASTM D2042
Water, per cent volume  — 0.2 ASTM D95
RC 250
Cutback Bitumen Rapid-Curing-250 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C, cST 250 500 ASTM D2170
Flashpoint (tag open cup), °C ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 437°F (225°C)

To 500°F (260°C)

To 600°F (316°C)

To 680°F (360°C)

35 ASTM D402
60
80
65
Test on Residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm 80 120 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100  — ASTM D113
Solubility in trichloroethylene % 99  — ASTM D2042
Water, per cent volume  — 0.2 ASTM D95
RC 800
Cutback Bitumen Rapid-Curing-800 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C, cST 800 1600 ASTM D2170
Flashpoint (tag open cup), °C ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 437°F (225°C)

To 500°F (260°C)

To 600°F (316°C)

To 680°F (360°C)

15 ASTM D402
45
75
75
Test on Residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm 80 120 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100  — ASTM D113
Solubility in trichloroethylene % 99  — ASTM D2042
Water, per cent volume  — 0.2 ASTM D95
RC 3000
Cutback Bitumen Rapid-Curing-3000 Specifications
Properties Specification limit  Test method
Min Max
Kinematic viscosity at 60°C, cST 3000 6000 ASTM D2170
Flashpoint (tag open cup), °C ASTM D3143
Distillation test
Distillate, volume per cent of total Distillate to 680°F (360°C)
To 437°F (225°C)

To 500°F (260°C)

To 600°F (316°C)

To 680°F (360°C)

 

 

ASTM D402
   25
   70
   80
Test on Residue from distillation test
Penetration 77°F (25°C) 100g, 5s mm 80 120 ASTM D5
Ductility 77°F (25°C) 5cm/min cm 100  — ASTM D113
Solubility in trichloroethylene % 99  — ASTM D2042
Water, per cent volume  — 0.2 ASTM D95