Rumays Intl. Trading Co.
Rumays Intl. Trading Co.
Cutback Bitumen or as it is called Liquid Bitumen, is a kind of bitumen or Asphaltum that has been dissolved in a solvent. Naphtha, gasoline and kerosene, white spirit, and other common solvents include these. Adding certain amounts of petroleum distillates such as kerosene to the Bitumen will results in “Cutback Bitumen”. This is done to temporarily lower the viscosity of the bitumen so that it can penetrate pavements more efficiently or to allow spraying at temperatures too cold for successful sprayed sealing with neat bitumen. Once after the application, the volatile material is evaporated and bitumen gain its original viscosity.
Cutback bitumen is a range of binder that are produced by blending (mixing) penetration grade bitumen and a hydrocarbon solvent such as paraffin or mineral turpentine. Cutbacks are used because they reduce asphalt viscosity for lower temperature uses (tack coats, fog seals, slurry seals, stabilization material). Similar to emulsified asphalts, after a cutback asphalt is applied the petroleum solvent evaporates leaving behind asphalt cement residue on the surface to which it was applied.
A cutback asphalt is said to “cure” as the petroleum solvent evaporates away. The use of cutback asphalts is decreasing because of Cutback asphalts contain volatile chemicals that evaporate into the atmosphere. Emulsified asphalts evaporate water into the atmosphere.
The petroleum solvents used require higher amounts of energy to manufacture and are expensive compared to the water and emulsifying agents used in emulsified asphalts.
In many places, cutback bitumen use is restricted to patching materials for use in cold weather.
The solvent used in cutback bitumen is called the “cutter” or “flux”.
The curing time is controlled by the kind and dilution of solvent, while the amount and volatility of the oil added influence the viscosity of the Cutback Bitumen.
Cutback Bitumen vs. Penetration Grade Bitumen
Cutbacks differ from penetration grade bitumen in that they are more workable in other words, they can be more easily reshaped. Less heat is required to liquefy Cutback bitumen than penetration bitumen, making it easier to use at lower temperatures.
Types of cutback bitumen we provide
Cutback bitumen is classified based on viscosity grade and it is divided into three categories:
Rapid Curing (RC), Medium Curing (MC), and Slow Curing (SC);
Curing relates to the evaporation rate of the solvent winch influenced the setting time of the bitumen. The choice of solvent determines the rate at which the bitumen will cure when exposed to air. The letters in the name refer to the curing action of the solvent, and the number to the viscosity of the binder. The viscosity of the cutback bitumen is determined by the proportion of solvent added: the higher the proportion of solvent, the lower the viscosity of the cutback.
Rapid Curing Cutback Bitumen is made by reducing the viscosity of and ordinary bitumen by adding mostly petroleum type solvent. Cutback Bitumen are used because their viscosity is lower than neat asphalt and can thus be used in low temperature applications. After a RC cutback is applied the solvent evaporates away and only the Bitumen is left. A RC cutback bitumen is said to cure as the petroleum solvent evaporates.
Rapid curing (RC) is a combination of light diluents of high volatility, generally in the gasoline or naphtha boiling point range (RC-30, RC-70, RC-250, RC-800, RC-3000), and asphalt cement.
RC 30
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 30 | 60 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | - | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | 55 | - | ASTM D402 | ||||||
| To 500°f(260°c) | 75 | - | ASTM D402 | ||||||
| to 600°f(316°c) | 50 | - | ASTM D402 | ||||||
| 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, percent volume | - | 0.2 | ASTM D95 | ||||||
RC 70
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 70 | 140 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | - | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | 50 | - | ASTM D402 | ||||||
| To 500°f(260°c) | 70 | - | ASTM D402 | ||||||
| to 600°f(316°c) | 85 | - | ASTM D402 | ||||||
| to 680°f(360°c) | 55 | - | ASTM D402 | ||||||
| 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, percent volume | - | 0.2 | ASTM D95 | ||||||
RC 250
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 250 | 500 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | - | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | 35 | - | ASTM D402 | ||||||
| To 500°f(260°c) | 60 | - | ASTM D402 | ||||||
| to 600°f(316°c) | 80 | - | ASTM D402 | ||||||
| to 680°f(360°c) | 65 | - | ASTM D402 | ||||||
| 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, percent volume | - | 0.2 | ASTM D95 | ||||||
RC 800
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: (+968) 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 800 | 1600 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | - | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | 15 | - | ASTM D402 | ||||||
| To 500°f(260°c) | 45 | - | ASTM D402 | ||||||
| to 600°f(316°c) | 75 | - | ASTM D402 | ||||||
| to 680°f(360°c) | 75 | - | ASTM D402 | ||||||
| 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, percent volume | - | 0.2 | ASTM D95 | ||||||
RC 3000
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 3000 | 6000 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | - | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | - | ASTM D402 | ||||||
| To 500°f(260°c) | 70 | - | ASTM D402 | ||||||
| to 600°f(316°c) | 70 | - | ASTM D402 | ||||||
| to 680°f(360°c) | 80 | - | ASTM D402 | ||||||
| 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, percent volume | - | 0.2 | ASTM D95 | ||||||
Rapid Curing Cutback Bitumen Applications
RC Cutback bitumen are typically used as prime coats and tack coats. Generally Cutback Bitumen are divided into three groups depending on their volatility of the solvent added. The rapid-setting grades are designed to react quickly primarily for spray applications, such as bond/tack coats, aggregate chips seals, sand seals and similar surface treatments.
RC Cutback Bitumen Safety
RC Cutback bitumen Packing
2- Medium-Curing (MC):
Medium Curing Cutback Bitumen Definition
Medium Curing Cutback Bitumen is a compound of different oil solvents such as kerosene in order to transform bitumen to soluble bitumen which is evaporated in oil solvent using process and the bituminous layer is remained to make cohesion, penetration and form a sealing layer. A famous sort of it known as MC250 or liquid bitumen in asphalt section including pavement (cohesive between 2 Tack coat asphaltic layers), cold asphalt (Roadmix) and substructure (cohesive between asphaltic and soil layers-Prime coat) has been previously using in Iran. Available kerosene in MC250 would lead to promoting bitumen restoration, better penetration in infrastructure application (Primecoat) but yet will increase environmental hazards, price and heating cost in using and discharging time comparison with various types of water-based emulsions.
Medium Curing Cutback Bitumen is produced and supplied in these types:
MC800, MC250, MC70, MC30 and MC3000 which have the different percentage of solvent.
MC 30
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 30 | 60 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | 38 | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | 25 | ASTM D402 | ||||||
| To 500°f(260°c) | 30 | 75 | ASTM D402 | ||||||
| to 600°f(316°c) | 75 | 90 | ASTM D402 | ||||||
| to 680°f(360°c) | 50 | - | ASTM D402 | ||||||
| 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 70 | 140 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | 38 | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | 20 | ASTM D402 | ||||||
| To 500°f(260°c) | 10 | 70 | ASTM D402 | ||||||
| to 600°f(316°c) | 65 | 93 | ASTM D402 | ||||||
| to 680°f(360°c) | 55 | - | ASTM D402 | ||||||
| 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 250 | 250 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | 66 | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | 20 | ASTM D402 | ||||||
| To 500°f(260°c) | 5 | 55 | ASTM D402 | ||||||
| to 600°f(316°c) | 60 | 90 | ASTM D402 | ||||||
| to 680°f(360°c) | 67 | - | ASTM D402 | ||||||
| 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 800 | 1600 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | 66 | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | - | ASTM D402 | ||||||
| To 500°f(260°c) | - | 40 | ASTM D402 | ||||||
| to 600°f(316°c) | 45 | 85 | ASTM D402 | ||||||
| to 680°f(360°c) | 75 | - | ASTM D402 | ||||||
| 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 3000
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 3000 | 6000 | ASTM D2170 | ||||||
| Flashpoint(tag open cup), °c | 66 | - | ASTM D3143 | ||||||
| Distillation test Distillate, volume percent of total Distillate to 680°f(360°c) | |||||||||
| to 437°f(225°c) | - | - | ASTM D402 | ||||||
| To 500°f(260°c) | - | 15 | ASTM D402 | ||||||
| to 600°f(316°c) | 15 | 75 | ASTM D402 | ||||||
| to 680°f(360°c) | 80 | - | ASTM D402 | ||||||
| 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 | ||||||
Medium Curing Cutback Bitumen Applications
The medium setting grades are designed for mixing with aggregates. Because these grades do not break immediately upon contact with aggregate, mixes using them can remain workable for extended periods of time and lend themselves to cold mix stockpiles.
MC Cutback Bitumen Packing
Packing of MC Cutback Bitumen is in new thick steel drums on pallet to prevent any leak inside of container also bulk in bitutainer and tanker.
3- Slow-Curing (SC):
Slow Curing Cutback Bitumen Definition
Slow curing Cutback Bitumen and oils of low volatility generally in the heavy distillate range (SC-70, 250, 800, 3000). The degree of liquidity developed in each case depends principally on the proportion of solvent to asphalt cement. To a minor degree, the liquidity of the cutback may be affected by the hardness of the base asphalt from which the cutback is made. The degree of fluidity results in several grades of cutback asphalt—some quite fluid at ordinary temperatures and others somewhat more viscous. The more viscous grades may require a small amount of heating to make them fluid enough for construction operations.
Slow curing often called “road oils,” are usually a residual material produced from the fractional distillation of certain crude petroleum. Traditionally any kind of aromatic, naphthenic and paraffinic oils are used. Slow Curing liquid bitumen materials can be prepared by blending bitumen with an oily petroleum fraction.
SC 70
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 70 | 140 | ASTM D2170 | ||||||
| Flashpoint(tag 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 | 700 | 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 250 | 500 | ASTM D2170 | ||||||
| Flashpoint(tag 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 | 1000 | 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 800 | 1600 | ASTM D2170 | ||||||
| Flashpoint(tag 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 | 17000 | 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
30/40 bitumen means penetration grade bitumen type which its penetration is in the range 30 to 40 mm at 25 degree Celsius. Bitumen 30/40 is a hard grade of bitumen. This grade is one of the most used bitumen grades for road construction in tropical areas.
As the hot weather of these regions can be a challenge for mixtures of asphalt, bitumen 30/40 is offered due to its high air blowing and penetration value.
Bitumen grade 30/40 is produced from the vacuum residue in a refinery.
| property | Min | Max | Test method | ||||||
|---|---|---|---|---|---|---|---|---|---|
| WhatsApp: +68 711 0378 | |||||||||
| Kinematic viscosity at 60°c ,cST | 3000 | 6000 | ASTM D2170 | ||||||
| Flashpoint(tag 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 | ||||||
Slow Curing Cutback Bitumen Applications
Current common uses are in penetrating prime coats and in producing patching or stockpile mixtures. Cutback asphalt used in mixing with aggregate will usually contain an adhesion agent to assist in the coating of the aggregate surface.
Cutback agents are used to lowering the viscosity of bitumen when it is applied as a primer to the surface of a road pavement aggregate base course or substrate. Kerosene is used as a bitumen cutback agent at different concentrations according to local conditions and requirements.
The cutback bitumen is ideal for prime coat and cold applied because of easy uses and no need to thinning and heating.
Cutback bitumen SC consist of initial incorporation of asphalt into the surface of non-asphalt based course preparatory to any superimposed treatment of construction.
The cutback asphalt SC applying to waterproofing of surfaces, plug capillary voids, coat and bond loose mineral particles.
Applications of Cutback Bitumen:
In road construction, the material must be fluid in nature at the moment of laying, i.e. during surface dressing. It is also critical for the material to return to its previous hardness and properties after setting. The fluidity is obtained for any bitumen by raising the temperature. Any bitumen may be made more fluid by raising the temperature. This is ensured by cutback bitumen. On the other hand, Cutback bitumen, is used when fluidity at lower temperatures is required during surface dressing.
Cutback bitumen is used when there is limited access to heating equipment and bitumen may be cooled throughout working. This type of bitumen is used in road operations for surfacing and pavement.
Cutback bitumen’s suitable for primer sealing can also be used in the manufacture of pre-mix asphalt, which is used in patch repairs. Cutback bitumen’s are used extensively in sprayed sealing applications, particularly in cooler weather where they provide improved initial stone retention due to their lower viscosity. Typically, a single application of the appropriate cutback bitumen is sprayed onto the primed pavement onto which aggregate is laid.
The process of priming involves applying a low viscosity binder to a prepared but usually unbound aggregate base. It is intended to be absorbed by the top layers of the base and provide a surface more easily ‘wetted’ by a subsequent bituminous covering. The primer will be able to carry traffic for a short time (although this practice is uncommon) and help control dust. Generally, primers are applied at rates between 0.5 and 1.4 L/m2. Priming-suitable cutback bitumen are also used for tack coats, which are applied to an underlying surface to help with the adhesion of subsequent asphalt layer. A typical application rate is between 0.2 and 0.4 L/m2.
Where temperatures are too cold for an effective priming operation, or where traffic is likely to distress a primed surface before the final seal can be sprayed, a primer seal can be used to provide adequate protection of the pavement for periods of up to 6 to 12 months. Cutback bitumen suitable for primer sealing can also be used in the production of pre-mix asphalt, which is used in patch repairs.
Cutback bitumen are used more usually in sprayed sealing applications, particularly in colder temperature where they provide improved initial stone retention due to their lower viscosity. Typically, a single application of the appropriate cutback bitumen is sprayed onto the primed pavement onto which aggregate is laid.
Other Application
Advantages of Cutback Bitumen:
Higher Content of Bitumen Cement
Easy to Apply
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