Anionic Bitumen Emulsion

Anionic Bitumen Emulsion Description

HJ Oil Group is a supplier of high-quality Anionic Bitumen Emulsion.
The preparation of bitumen emulsion is essentially the grinding of bitumen in water with a surfactant. Therefore, the emulsifier is one of the most important components of bitumen emulsions, which directly influences the quality and characteristics of the product. The emulsifier is a surfactant. By chemical nature, surfactants are divided into several types, depending on the charge of its particles. Since water bitumen emulsions are used intensively as binding and film-forming material in construction, two types of emulsifiers are used: anionic and cationic.

Chemical surface-active agents, which serve as emulsifiers, are classified by the electrochemical charge that is attained when they dissociate in a water solution. In the case of anionic emulsions, the chemical charge is negative. The chemical type and quantity of surface-active agent used in the manufacturing process govern the process in which the resulting asphalt emulsion can be used.

The term Anionic Bitumen Emulsion is derived from the migration of particles of bitumen under an electric field. The droplets migrate toward the anode (positive electrode), and hence the emulsion is called anionic. In an anionic emulsion, there are “billions and billions” of bitumen droplets with the emulsifying agent at the water bitumen interface. The tail portion of the emulsifying agent aligns itself in the bitumen while the positive portion of the head floats around in the water leaving the rest of the head negatively charged and at the surface of the droplet. This imparts a negative charge to all the droplets. Since negatives repel each other, all the droplets repel each other and remain as distinct bitumen drops in suspension. A typical anionic emulsifying agent is shown below along with a diagram showing the orientation of the agent at the bitumen-water interface and the negative charge imparted to each drop.

ANIONIC EMULSION

RS	MS	SS
RS-1 RS-2	MS-1 MS-2 MS-2h HFMS-1 HFMS-2 HFMS-2h HFMS-2s	SS-1 SS-1h

The difference is that the anionic bitumen emulsion is negatively charged, while the cationic emulsions are positively charged. The choice of emulsifier used in the preparation of the emulsions determines the efficiency and reliability of the product.

For certain reasons, cationic systems have a significant advantage over anionic emulsions. Most of the fillers used in road construction have a limited amount of positively charged particles, which can attract the negatively charged particles of the anionic emulsion. Therefore, it is more difficult to create a uniform structure and ensure a high degree of adhesion with an anionic surfactant. When using anionic emulsion, bitumen should be modified by additives, while in the cationic emulsion, the emulsifier itself serves as an adhesion additive.

Unlike cationic emulsions, which readily interact with alkaline and acidic minerals, anionic emulsions are less versatile and work well only with alkaline minerals.
The amount of emulsifier applied influences emulsion breakdown rate, i.e. the time until the bitumen precipitating from the emulsion, returns to its original state.

Slow Curing Cutback Bitumen

Slow Curing Cutback Bitumen Description

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 petroleums. 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.

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.

Slow curing (SC) cutback asphalt cement 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 (SC) cutback asphalt are often called road oils and are used primarily in road-mixing and dust-laying applications. This term originated in earlier days when asphalt residual oil was used to give roads a low-cost, all-weather surface. SC cutback asphalts are also used for stockpile patching mixes, plant-mixed with graded aggregates and occasionally for priming.

Medium Curing Cutback Bitumen

Medium Curing Cutback Bitumen Description

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 used. 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. Bitucut bitumen is produced and supplied in these types: MC800, MC250, MC70, MC30 and MC3000 which have the different percentage of solvent. Bitucut usage differs in various conditions such as substructure (continuous grading with low free space, open grading, and soil percentage). Using Bitucut in substructures (Primecoat) is the most demanded application.

Medium curing (MC) cutback asphalts are defined as those asphalt grades, which are prepared by using the medium volatile kerosene as the prime coat with boiling point ranges (MC-30, 70, 250, 800, 3000). The mix is done in a cold manner.

Cutback bitumen or asphalt is classified based on the curing as follows, 1) Slow, 2) medium and 3) rapid curing.

The degree of evaporation in the medium curing cutback asphalt is intermediate because the kerosene is intermediate volatile liquid as compared to the naphtha and diesel. The degree of liquidity depends on the proportion in which the kerosene is mixed in the asphalt cement.

The following specification for the medium curing cutback asphalt with its properties are as given below.

The medium curing cutback asphalt is used in the flexible pavements for surface dressing, prime coating, and tack coating. Evaporation of the solvents will be at a moderate rate. This grade is used with aggregates for ensuring better work-ability in the mix.

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.

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.

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.

A cutback bitumen medium curing MC is simply a combination of asphalt cement and petroleum solvent. Like emulsions, 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. Cutback asphalt is said to “cure” as the petroleum solvent evaporates away. The use of cutback asphalts is decreasing because of environmental regulations.

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.

Rapid Curing Cutback Bitumen

Rapid Curing Cutback Bitumen Description

Rapid curing cutback Bitumen cement is a combination of light diluents of high volatility, generally in the gasoline or naphtha boiling point range (RC-70, 250, 800, 3000), and asphalt cement.

Cut-back asphalts is defined as the bitumen whose viscosity value will be greatly reduced by the addition of volatile diluents (high viscosity). It mainly depends upon the diluents used. Generally, three types of cutbacks are used as follows, 1) rapid curing, 2) medium curing and 3) slow curing.

Rapid curing cutback asphalt combinations are prepared starting from the lighter diluents, and even from the fluid of higher viscosity. The grades used for rapid curing cutback bitumen are RC-70, RC-250, RC-800 and RC-3000. Here, the value given by numbers 70, 250, 800, and 3,000 represents the kinematic viscosity of the bitumen given in centistokes. The solvent concentration of rapid curing asphalt is 15-45% of the volume of asphalt cement used.

Different degrees of fluidity exists for each case and it depends on the proportion of the solvent of asphalt cement. In a minor degree cutback, liquidity may get affected by the hardness of base asphalt from which the cutback is made. It is used for the prime coats.

It is used in the pavement design process. It reacts quickly for the spray applications of bond and tack coats. It is helpful to seal the aggregate chips and sand seals. Rapid curing asphalts are mainly used for surface treatment.

Cut back asphalt RC 800 is useful for waterproofing surfaces and plug capillary voids. Grade RC250 acts as a seal coat in roadway pavements.

Mainly two tests are conducted on cut-back asphalt and are given as 1) residue and 2) cut back test. The testing of residue focusses on examination of penetration, ductility, and solubility. The testing of cutback bitumen includes the distillation, viscosity and flash point tests.

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.

Cutback Bitumen Rapid Curing Applications

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 that of neat asphalt and can thus be used in low-temperature applications.

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.

Rapid curing 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

After a RC cutback is applied the solvent evaporates away and only the Bitumen is left. A rapid curing cutback bitumen is said to cure as the petroleum solvent evaporates.

RC Cutback Bitumen Packing

Bulk as IBC Tank, Flexi Tank

Reconditioned steel drums 220 lit., Net Weight: 191 ± 3 Kg

New steel drums 220 lit., Net Weight: 191 ± 3 Kg

RC Cutback Bitumen Safety

Refer to Safety Data sheets before use.
Transport, use and store at the lowest temperature possible.
Eliminate all potential ignition sources during application.
Avoid breathing vapors. Avoid contact with skin.
Always wear appropriate PPE including heat protection when used hot.
DO NOT allow product or washings to enter stormwater or sewer systems.

Bitumen Number 40

Bitumen Number 40 Description

Bitumen 40 is a type of hard grade building asphalt with penetration starting from #40 that is why it is famous asphalt number 40. Bitumen Number 40 is available in bag and drum also the bulk tanker. This grade of asphalt building material is mostly using in the eastern Asia market especially Taiwan and China also the Philippine and Indonesia. Bitumen grade 40 is the most consumable hard asphalt which is a semi-solid grade of pure petroleum bitumen categorized in polycyclic aromatic hydrocarbons is normally used for different purposes in the construction business.

Blown Asphalt No. 40 Applications

1. For underground moisture, waterproofing works
2. For nuclear power engineering, pipeline engineering, bottom anticorrosion, asphalt production of the production
3. For waterproofing membrane, moisture-proof paper production, etc.
4. For Anti-corrosion paint and waterproof production
5. Used for road and bridge caulking use

Blown Asphalt No. 40 Specs

Technical indicators	10
Penetration (25 ° C, 100 g, 5 s) / (0.1 mm)	10-26
The ductility (25 ° C, 5 cm / min) / cm is not less than	1.5
Softening point (ball method) / ℃ not less than	95
Solubility (trichloroethylene) /% is not less than	99.5
Evaporation loss (163 ° C, 5 h) /% no more than	1
After evaporation, the penetration ratio (25 ℃) /% is not less than	65
Flashpoint (open cup) / ℃ not less than	230
Brittle / ℃	report

Bitumen No.40 Packing

Bitumen Number 40 in various packing including kraft bag, meltable plastic bag, drum, and bulk, it is made by hot air in a controlled process until the desired specification is reached. Bitumen Number 40 can be supplied in volume quantity as well. Bitumen #40 means the softening point is 115°c and penetration is 15 desi millimeter is produced in compliance and conformity to ASTM standard and meets the mentioned specification.

Bitumen Number 30

Bitumen Number 30 Description

Bitumen30 is a type of hard grade building asphalt with penetration starting from #30 that is why it is famous asphaltum number 30. Bitumen Number 30 is available in bag and drum also the bulk tanker. This grade of asphalt building material is mostly using in the eastern Asia market especially Taiwan and China also the Philippine and Indonesia. Bitumen grade 30 is the most consumable hard asphalt which is a semi-solid grade of pure petroleum bitumen categorized in polycyclic aromatic hydrocarbons is normally used for different purposes in the construction business.

Blown Asphalt N0. 30 Applications

1. For underground moisture, waterproofing works
2. For nuclear power engineering, pipeline engineering, bottom anticorrosion, asphalt production of the production
3. For waterproofing membrane, moisture-proof paper production, etc.
4. For Anti-corrosion paint and waterproof production
5. Used for road and bridge caulking use

Blown Asphalt No. 30 Specs

Technical indicators	10
Penetration (25 ° C, 100 g, 5 s) / (0.1 mm)	10-26
The ductility (25 ° C, 5 cm / min) / cm is not less than	1.5
Softening point (ball method) / ℃ not less than	95
Solubility (trichloroethylene) /% is not less than	99.5
Evaporation loss (163 ° C, 5 h) /% no more than	1
After evaporation, the penetration ratio (25 ℃) /% is not less than	65
Flashpoint (open cup) / ℃ not less than	230
Brittle / ℃	report

Bitumen No.30 Packing

Bitumen Number 30 in various packing including kraft bag, meltable plastic bag, drum, and bulk, it is made by hot air in a controlled process until the desired specification is reached. bitumen Number 30 can be supplied in volume quantity as well. Bitumen #30 means the softening point is 115°c and penetration is 15 desi millimeter is produced in compliance and conformity to Astm standard and meets the mentioned specification.

Bitumen Number 10

Bitumen Number 10 Description

Bitumen 10 is a type of hard grade building asphalt with penetration starting from #10 that is why it is famous asphaltum number 10. Bitumen Number 10 is available in bag and drum also the bulk tanker. This grade of asphalt building material is mostly using in the eastern Asia market especially Taiwan and China also the Philippine and Indonesia. Bitumen grade 10 is the most consumable hard asphalt which is a semi-solid grade of pure petroleum bitumen categorized in polycyclic aromatic hydrocarbons is normally used for different purposes in the construction business.

Blown Asphalt N0. 10 Applications

1. For underground moisture, waterproofing works
2. For nuclear power engineering, pipeline engineering, bottom anticorrosion, asphalt production of the production
3. For waterproofing membrane, moisture-proof paper production, etc.
4. For Anti-corrosion paint and waterproof production
5. Used for road and bridge caulking use

Blown Asphalt No. 10 Specs

Technical indicators	10
Penetration (25 ° C, 100 g, 5 s) / (0.1 mm)	10-26
The ductility (25 ° C, 5 cm / min) / cm is not less than	1.5
Softening point (ball method) / ℃ not less than	95
Solubility (trichloroethylene) /% is not less than	99.5
Evaporation loss (163 ° C, 5 h) /% no more than	1
After evaporation, the penetration ratio (25 ℃) /% is not less than	65
Flashpoint (open cup) / ℃ not less than	230
Brittle / ℃	report

Bitumen No.10 Packing

Bitumen Number 10 in various packing including kraft bag, meltable plastic bag, drum, and bulk, it is made by hot air in a controlled process until the desired specification is reached. bitumen Number 10 can be supplied in volume quantity as well. Bitumen #10 means the softening point is 115°c and penetration is 15 desi millimeter is produced in compliance and conformity to Astm standard and meets the mentioned specification.

Oxidized Bitumen 75/25

Oxidized Bitumen 75/25 Description

Oxidized Bitumen 75/25 is an oxidized Bitumen produced by oxidizing a selected petroleum asphalts without adding the catalyst. Bitumen 75/25 has a high softening point, high flash point and it is highly stable during melting. This kind of Blown Asphalt is mostly using in the Mediterranean and especially the morocco market.

Blown Asphalt 75/25 is produced by the air-blowing of penetration grade bitumen. This is done at high temperatures, resulting in a material of a much higher penetration index.

Bitumen 75/25 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. The designation of the Oxidised bitumen 75/25 refers to the midpoint of the softening point acceptance criteria.

Blown Asphalt is a solid or semi-black solid material and gradually liquid when heated. Oxidized Bitumen grades are blown or oxidized bitumen‘s which are produced by passing air through soft bitumen under controlled temperature conditions. This process gives the bitumen more rubbery properties than penetration or hard grade bitumens and a variety of uses in industrial applications.

Bitumen 75/25 is produced by either Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under controlled environment is blown with air which controls the Oil Content in the Bitumen while it oxidized. The different grades for suited applications produced are designated by two numbers to indicate the mid-points of their softening point and penetration ranges.

As said before, Bitumen 75/25 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively. The softening point value measured by the Ring and Ball method as determined by ASTM D36. Also, the penetration value is in 1/10 mm as determined by IP49 or ASTM- D5.

Oxidized Bitumen 75/25 Applications

Blown Asphalt 75/25 grades are produced by passing air through soft bitumen under controlled temperature conditions. This process gives the bitumen more rubbery properties than penetration or hard grade bitumen and enables the product to serve a variety of uses in industrial applications. These grades are suitable for sealing saw cuts and joints where there is expected to be the minimum amount of moving in the joint. Their wide temperature range prevents bleeding in high-temperature applications. They can also be used for industrial applications such as pipe coating, roofing, waterproofing, flooring, mastics, sound damping, carpet backing, adhesive and electrical applications. Hard bitumen under controlled temperature conditions is widely used as an anti-slip layer compound in the piling industry, for the manufacture of roofing felts, the roofing and waterproofing industries, for sound dampening felts and undercarriage sealant in the automotive industry, electric cable joint protection, joint filling compound, sealant compound, and many others. Also used in sealing saw cuts and joints where expected movements are minimum.

Technical Advantages of Blown Asphalt 75/25

• Durability
• Flexibility
• Water-Resistant
• Chemical Stability

Compared to paving grade bitumen:

• Reduced temperature susceptibility
• Exhibits a more ‘solid’ nature at ambient temperatures
• High penetration index

Recommendations for Handling / Storage

The heating of packaged bitumen is a critical phase in most of the final uses. Typically, the packaged material is heated and melted in boilers out on site.

However, control at the heating phase is very important in terms of health and safety as well as in maintaining the quality of the product.

A note must be taken of the maximum safe handling temperature of 230 C and this should not be abused. Bitumen is a poor conductor of heat, consequently, control of the heating phase is of paramount importance.

The Oxidized Bitumen material should be broken up prior to placement in the boiler. This exposes a larger surface area to the heat and encourages a more even heating regime. Without the larger exposed surface area, aggressive heating at the base and sides of the boiler may well result in localized overheating, altering the characteristics of the modified bitumen, and potentially causing thermal cracking of the bitumen, creating the release of low lash vapors. The flashpoint of the oxidized bitumen then becomes irrelevant; as these low flash vapors determine the fire risk.

Melted bitumen should not be left in the boiler and reheated from cold, as there is then a high potential for localized overheating around the heating area (lack of convection means poor heat transfer) and potential development of a pressurized pocket of low flash vapors.

Be aware of the placement of any temperature monitoring or control devices. As a result of the poor thermal conductivity of the bitumen, a thermometer in the bitumen some distance from the heat source could read significantly different (even hundreds of degrees) from the true temperature of the bitumen near the heat source.

For Health and Safety information, please make reference to the relevant MSDS.

Health & Safety

Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline. Care should be taken when heating Blown Asphalt 75/25  to avoid overheating

Oxidized Bitumen 75/25  is a dark industrial bitumen. Petroleum residue modified by the oxidation process. In addition, Blown Asphalt is produced by passing air through bitumen under a controlled temperature state. Its stability ranges from highly viscous to solid. Blown Asphalt grade has technical advantages such as durability, flexibility, water-resistant and chemical stability. There is also a different grade of blown bitumen.
Blown Grade Asphalt shall be broken up into small pieces and heated slowly to the application temperature of 220ºC to 230ºC.

Packing of Oxidized Bitumen 75/25

Oxidized Bitumen 75/25  in various packing, including bitumen 75/25 is available in 20 & 50 kg Kraft Paper Bags / Poly Amide Bags, 25 kg Carton box, and 150, 180, 200kg Steel Drums. In addition, oxidized bitumen packing also palletize, 40 bags can stack on the pallet. 20 pallets can load to the 20ft container.

Technical Data Sheet of Blown Asphalt 75/25

Bitumen 75/25	Test method	Unit	Specification
Specific gravity @25/25 C	ASTM D70	(Kg/m3)	1.05 approx.
Penetration @ 25°c	ASTM  D5	mm/10	30/40
Softening point °c	ASTM  D36	°C	70/80
Loss on heating(wt) %	ASTM  D6	Wt. %	0.2 max
Flashpoint c	ASTM D92	°C	250 min
Solubility is CS2(wt) %	ASTM  D4	Wt. %	99.5 max
Spot test	A.A.S.H.T.O 102	—	Negative

Oxidized Bitumen 75/35

Oxidized Bitumen 75/35 Description

Blown Asphalt 75/35 is an oxidized Bitumen produced by oxidizing a selected petroleum asphalts without adding the catalyst. Bitumen 75/35 has a high softening point, high flash point and it is highly stable during melting. This kind of Blown Asphalt is mostly using in the Mediterranean and especially the morocco market.

Blown Asphalt 75/35 is produced by the air-blowing of penetration grade bitumen. This is done at high temperatures, resulting in a material of a much higher penetration index.

Bitumen 75/35 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. The designation of the Oxidised bitumen 75/35 refers to the midpoint of the softening point acceptance criteria.

Blown Asphalt is a solid or semi-black solid material and gradually liquid when heated. Oxidized Bitumen grades are blown or oxidized bitumen‘s which are produced by passing air through soft bitumen under controlled temperature conditions. This process gives the bitumen more rubbery properties than penetration or hard grade bitumens and a variety of uses in industrial applications.

Bitumen 75/35 is produced by either Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under controlled environment is blown with air which controls the Oil Content in the Bitumen while it oxidized. The different grades for suited applications produced are designated by two numbers to indicate the mid-points of their softening point and penetration ranges.

As said before, Bitumen 75/35 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively. The softening point value measured by the Ring and Ball method as determined by ASTM D36. Also, the penetration value is in 1/10 mm as determined by IP49 or ASTM- D5.

Oxidized Bitumen 75/35 Applications

Blown Asphalt 75/35 grades are produced by passing air through soft bitumen under controlled temperature conditions. This process gives the bitumen more rubbery properties than penetration or hard grade bitumen and enables the product to serve a variety of uses in industrial applications. These grades are suitable for sealing saw cuts and joints where there is expected to be the minimum amount of moving in the joint. Their wide temperature range prevents bleeding in high-temperature applications. They can also be used for industrial applications such as pipe coating, roofing, waterproofing, flooring, mastics, sound damping, carpet backing, adhesive and electrical applications. Hard bitumen under controlled temperature conditions is widely used as an anti-slip layer compound in the piling industry, for the manufacture of roofing felts, the roofing and waterproofing industries, for sound dampening felts and undercarriage sealant in the automotive industry, electric cable joint protection, joint filling compound, sealant compound, and many others. Also used in sealing saw cuts and joints where expected movements are minimum.

Technical Advantages of Blown Asphalt 75/35

• Durability
• Flexibility
• Water-Resistant
• Chemical Stability

Compared to paving grade bitumen:

• Reduced temperature susceptibility
• Exhibits a more ‘solid’ nature at ambient temperatures
• High penetration index

Recommendations for Handling / Storage

The heating of packaged bitumen is a critical phase in most of the final uses. Typically, the packaged material is heated and melted in boilers out on site.

However, control at the heating phase is very important in terms of health and safety as well as in maintaining the quality of the product.

A note must be taken of the maximum safe handling temperature of 230 C and this should not be abused. Bitumen is a poor conductor of heat, consequently, control of the heating phase is of paramount importance.

The Oxidized Bitumen material should be broken up prior to placement in the boiler. This exposes a larger surface area to the heat and encourages a more even heating regime. Without the larger exposed surface area, aggressive heating at the base and sides of the boiler may well result in localized overheating, altering the characteristics of the modified bitumen, and potentially causing thermal cracking of the bitumen, creating the release of low lash vapors. The flashpoint of the oxidized bitumen then becomes irrelevant; as these low flash vapors determine the fire risk.

Melted bitumen should not be left in the boiler and reheated from cold, as there is then a high potential for localized overheating around the heating area (lack of convection means poor heat transfer) and potential development of a pressurized pocket of low flash vapors.

Be aware of the placement of any temperature monitoring or control devices. As a result of the poor thermal conductivity of the bitumen, a thermometer in the bitumen some distance from the heat source could read significantly different (even hundreds of degrees) from the true temperature of the bitumen near the heat source.

For Health and Safety information, please make reference to the relevant MSDS.

Health & Safety

Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline. Care should be taken when heating Blown Asphalt 75/35  to avoid overheating

Oxidized Bitumen 75/35  is a dark industrial bitumen. Petroleum residue modified by the oxidation process. In addition, Blown Asphalt is produced by passing air through bitumen under a controlled temperature state. Its stability ranges from highly viscous to solid. Blown Asphalt grade has technical advantages such as durability, flexibility, water-resistant and chemical stability. There is also a different grade of blown bitumen.
Blown Grade Asphalt shall be broken up into small pieces and heated slowly to the application temperature of 220ºC to 230ºC.

Packing of Oxidized Bitumen 75/35

Blown Asphalt 75/35  in various packing, including bitumen 75/35 is available in 20 & 50 kg Kraft Paper Bags / Poly Amide Bags, 25 kg Carton box, and 150, 180, 200kg Steel Drums. In addition, oxidized bitumen packing also palletize, 40 bags can stack on the pallet. 20 pallets can load to the 20ft container.

Technical Data Sheet of Blown Asphalt 75/35

Bitumen 75/35	Test method	Unit	Specification
Specific gravity @25/25 C	ASTM D70	(Kg/m3)	1.05 approx.
Penetration @ 25°c	ASTM  D5	mm/10	30/40
Softening point °c	ASTM  D36	°C	70/80
Loss on heating(wt) %	ASTM  D6	Wt. %	0.2 max
Flashpoint c	ASTM D92	°C	250 min
Solubility is CS2(wt) %	ASTM  D4	Wt. %	99.5 max
Spot test	A.A.S.H.T.O 102	—	Negative

Oxidized Bitumen 85/25

Oxidized Bitumen 85/25 Description

Oxidized Bitumen 85/25 or Oxidized Asphalt 85/25 is produced by blowing hot air into the penetration bitumen. This action makes the bitumen more rubbery than its original formula and it becomes harder bitumen. This bitumen recovery the weight loss under heating. Due to low thermal sensitivity, the softening point is much higher than regular bitumen and the penetration index (PI) is higher than road construction bitumen (8>PI>2) due to the letter has a gel-like structure because of asphalt accumulation.

Oxidized Bitumen 85/25 is produced by the air-blowing of penetration grade bitumen. This is done at high temperatures, resulting in a material of a much higher penetration index. Bitumen 85/25 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. The designation of the Oxidized Bitumen 85/25 refers to the midpoint of the softening point acceptance criteria.

Bitumen 85/25 is produced by either Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under controlled environment is blown with air which controls the Oil Content in the Bitumen while it oxidized. The different grades for suited applications produced are designated by two numbers to indicate the mid-points of their softening point and penetration ranges.

As said before, Blown Asphalt 85-25 is based on petroleum bitumen which is made by blowing bitumen 60/70 by very hot air. In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively. The softening point value measured by the Ring and Ball method as determined by ASTM D36. Also, the penetration value is in 1/10 mm as determined by IP49 or ASTM- D5.

Oxidized Bitumen 85/25 Applications

Oxidized Bitumen 85/25 is a solid or semi-black solid material and gradually liquid when heated. Oxidized Bitumen grades are blown or oxidized Asphalt‘s which are produced by passing air through soft bitumen under controlled temperature conditions. This process gives the bitumen more rubbery properties than penetration or hard grade bitumens and a variety of uses in industrial applications.

Oxidized Bitumen 85/25 is widely used as an anti-slip layer compound in the piling industry, for the manufacture of roofing felts, the roofing and waterproofing industries, for sound dampening felts and undercarriage sealant in the automotive industry, electric cable joint protection, joint filling compound,  carpet-backing, corrosion protection, acoustic panels, chemical, fuel, Manufacture of paints, sealant compound, and many others. Also used in sealing saw cuts and joints where expected movements are minimum. It is also used in the manufacturing of bituminous marine mastic for the oil & gas pipeline joints. Further, Oxidized Bitumen is used in the manufacture of bituminous marine mastic, which is required for the oil and gas pipeline joints.

• Oxidized bitumen is used as a sealing of expansion joints.
• Oxidized bitumen is used as a repair of joints or cracks.
• Oxidized bitumen is used as a fixation of parquet floors.
• Oxidized bitumen is used as an adhesive to be used in thermal insulation.
• Oxidized bitumen is used as a repair of unexposed cracks.
• Oxidized bitumen is used as bonding of wet briquettes
• Oxidized bitumen is used in various industries like roofing, isolation, insulation flooring, mastics, pipe coatings, electrical applications.

Technical Advantages of Oxidized Bitumen 85/25

• Durability
• Flexibility
• Water-Resistant
• Chemical Stability

Compared to paving grade bitumen:

• Reduced temperature susceptibility
• Exhibits a more ‘solid’ nature at ambient temperatures
• High penetration index

Recommendations for Handling / Storage

The heating of packaged bitumen is a critical phase in most of the final uses. Typically, the packaged material is heated and melted in boilers out on site.

However, control at the heating phase is very important in terms of health and safety as well as in maintaining the quality of the product.

A note must be taken of the maximum safe handling temperature of 230 C and this should not be abused. Bitumen is a poor conductor of heat, consequently, control of the heating phase is of paramount importance.

The Oxidized Bitumen material should be broken up prior to placement in the boiler. This exposes a larger surface area to the heat and encourages a more even heating regime. Without the larger exposed surface area, aggressive heating at the base and sides of the boiler may well result in localized overheating, altering the characteristics of the modified bitumen and potentially causing thermal cracking of the bitumen, creating the release of low lash vapors. The flashpoint of the oxidized bitumen then becomes irrelevant; as these low flash vapors determine the fire risk.

Melted bitumen should not be left in the boiler and reheated from cold, as there is then a high potential for localized overheating around the heating area (lack of convection means poor heat transfer) and potential development of a pressurized pocket of low flash vapors.

Be aware of the placement of any temperature monitoring or control devices. As a result of the poor thermal conductivity of the bitumen, a thermometer in the bitumen some distance from the heat source could read significantly different (even hundreds of degrees) from the true temperature of the bitumen near the heat source.

Bitumen 85/25 is produced by either Continuous or Staggered Blowing Process. Heated Penetration Grade Bitumen under controlled environment is blown with air which controls the Oil Content in the Bitumen while it oxidized. The different grades for suited applications produced are designated by two numbers to indicate the mid-points of their softening point and penetration ranges.

The Oxidized Bitumen 85/25 should be heated double temperature against the softening point to be able to have flow and viscosity.

Surfaces must be dry, clean, and free of loose particles, formwork, curing products, irregularities, slurry, etc.

Health & Safety

Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline. Care should be taken when heating Oxidized Bitumen 85/25 to avoid overheating. For Health and Safety information, please make reference to the relevant MSDS.

Packing of Blown Asphalt 85/25

Oxidized Bitumen 85/25 in various packing, including bitumen 85/25 is available in 20 & 50 kg Kraft Paper Bags / Poly Amide Bags, 25 kg Carton box, and 150, 180, 200kg Steel Drums. In addition, oxidized bitumen packing also palletize, 40 bags can stack on the pallet. 20 pallets can load to the 20ft container.

Technical Data Sheet of Blown Asphalt 85/25

Bitumen 85/25	Test method	Unit	Specification
Specific gravity @25/25 C	ASTM D70	(Kg/m3)	1.05 approx.
Penetration @ 25°c	ASTM  D5	mm/10	20/30
Softening point °c	ASTM  D36	°C	80/90
Ductility @25 °c	ASTM  D113	Cm	3 min
Loss on heating(wt) %	ASTM  D6	Wt. %	0.2 max
Flashpoint c	ASTM D92	°C	250 min
Solubility is CS2(wt) %	ASTM  D4	Wt. %	99.5 max
Spot test	A.A.S.H.O.T 102	—	Negative