Quick answer. Before choosing any bitumen instrument, settle which extraction solvent you are permitted to use. Binder content is found by dissolving bitumen out of the mix, and the solvents traditionally specified for it are chlorinated - toxic, restricted or banned for general use in many countries, and subject to strict disposal rules where they are allowed. Ask which solvent the method supplied with the binder extractors requires, whether it is lawful where you are, and how used solvent and recovered aggregate are disposed of; an extraction unit also needs a fume cupboard. Then buy by stage: grading the binder, finding binder content, or testing the mix.
About thirty items, coded BT-0001 onwards, for bitumen and bituminous mixture testing. Grading the binder: standard and semi-automatic penetrometers, ring and ball softening point apparatus in manual and electrically heated forms, a Saybolt viscometer and a standard tar viscometer. Binder content and recovery: a hand-operated binder extractor, motorised centrifuge extractors and a reflux extractor. Water content: a Dean and Stark apparatus. Mix design and performance: a mixer with a heating jacket, manual compaction equipment and Marshall stability test apparatus in analogue and digital forms. Field and pavement work: a pavement core drilling machine, a three metre straight edge and a stripping value apparatus.
Two notes on our catalogue data: two records carry a letter suffix on the code rather than a new number, which is a format not used elsewhere in the catalogue and may not sort or search as you expect; and the Saybolt viscometer has its name split into two words. Quote the code and the full product name together and have both confirmed on the proforma invoice.
Every other page in this catalogue puts safety after the technical content. This one does not, because bitumen testing involves two hazards that are more serious than anything in the instruments themselves, and a laboratory that is not set up for them should not take delivery.
Hot bitumen causes severe burns, and it sticks. It is handled at well over a hundred degrees, it is viscous, and on contact with skin it adheres and keeps transferring heat. The rule that matters: adhered bitumen is never pulled or wiped off - the skin comes with it. It is cooled immediately with copious cool water and left in place, and the casualty goes for medical attention with the bitumen still on. That instruction should be on the wall of the laboratory before any hot work starts, along with long gauntlets, a face shield, an apron and closed footwear.
Three further hot-work rules. Never heat bitumen with a naked flame - use a thermostatically controlled oven or pot, because bitumen heated past its flash point can ignite and an open flame under a pot is how that happens. Keep water out of hot bitumen: a wet container or a damp sample causes violent foaming and can throw hot material out of the vessel. And never heat a sealed container of any kind.
The extraction solvents need settling before you order. Binder content is determined by dissolving the bitumen out of the mix, and the solvents traditionally specified for it are chlorinated - effective, and also toxic, with several of them now restricted or banned for general use in many countries and subject to strict handling and disposal rules where they are permitted. So ask us, explicitly: which solvent does the method supplied with this apparatus require, is it lawful to import and use where you are, and what is the disposal route for the used solvent and the recovered aggregate? An extraction unit also needs a fume cupboard rather than a bench. We would rather answer that at the enquiry stage than ship equipment you cannot lawfully run.
Bitumen work runs in three stages, and the listing divides the same way. Knowing which stage your laboratory is in tells you which third to buy.
| Stage | What is measured | What to settle |
|---|---|---|
| 1. Grade the binder | Penetration, softening point and viscosity - the three numbers that identify a bitumen grade and tell you how it will behave hot and cold | Bath temperature control, heating rate, and the condition of needles and balls. These are small instruments whose results depend almost entirely on temperature discipline |
| 2. Find the binder content | How much bitumen is in a mix, and recovery of the binder for re-testing after it has been in service | The solvent question above, a fume cupboard, and the extraction method your standard names |
| 3. Test the mix | Marshall stability and flow, stripping value, and core samples from the laid pavement | Temperature control at every step - mixing, compaction, conditioning and testing - because a bituminous mix is a different material at every temperature |
Penetration is the depth a standard needle sinks into the sample under a standard load for a standard time at a standard temperature - and every one of those words is a specification. The bath temperature is the most sensitive of them: bitumen softens quickly as it warms, so a bath drifting by a degree moves the result. Ask what bath and thermostat are supplied and their stability. And ask about the needles: a needle is a consumable, and a blunted or burred needle penetrates less and reports the bitumen as harder than it is. Ask what spares cost and set a replacement rule.
Softening point by the ring and ball method heats a sample in a bath until a steel ball falls through it. The result depends on the rate of heating, which the standard sets - and that is exactly the difference between the two records in this listing: the manual version relies on the operator controlling a heater, the electrically heated version controls the rate itself. For a laboratory reporting results to customers, buy the controlled version; for teaching, the manual one makes the point about heating rate rather well.
Viscosity by the Saybolt and standard tar viscometers is an efflux time in seconds rather than a value in modern units - the same point set out on our oil and petroleum testing page. If your specification asks for kinematic or dynamic viscosity in SI units, these instruments do not produce it directly; tell us and we will quote a capillary bath or a rotational viscometer instead.
The Marshall method is the mix design procedure most road specifications are written around, and it is a sequence rather than a measurement: a mix is prepared at a specified temperature, compacted with a specified hammer and number of blows per face, conditioned in a water bath at a specified temperature for a specified time, then loaded in a breaking head at a specified rate while load and flow are recorded.
So a Marshall stability machine on its own cannot run the method. Ask what is included and what is extra: the compaction hammer and pedestal, moulds and collars, the extruder, the water bath with its thermostat, the breaking head, the flow meter or displacement transducer, and the load measurement. Ask also how load and flow are recorded, because the digital version in this listing exists to capture both as a curve rather than leaving an operator to read a dial and a gauge at the same moment - which is genuinely difficult and is where most Marshall scatter comes from.
And the temperature discipline, which is the whole method: mixing temperature, compaction temperature, bath temperature and the time in the bath are all specified, and a result taken outside them is not a Marshall result. Ask us for the bath capacity in specimens, because the bath is usually the bottleneck in a busy laboratory.
The core drilling machine takes samples from a laid pavement for thickness, density and binder content. Ask the core diameters it takes, the power supply - petrol or electric, which decides whether it can be used away from a supply - the water supply and collection arrangement, since diamond coring needs water and produces slurry, and the mass, because it has to be carried to site. Ask also about operator protection: this is a rotating cutter in a wet environment, so earth-leakage protection on an electric machine is not optional.
The stripping value apparatus answers a different and very practical question: whether the binder will stay stuck to the aggregate in the presence of water, which is what causes a surface to ravel. For a laboratory working with local aggregates of unknown affinity it is one of the most useful instruments on this page, and it is cheap. Ask what the method is and what the test conditions are.
The standard and version each item is built to; bath capacities, thermostat stability and whether temperature is recorded; heating rate control on the softening point apparatus; needle, ball and ring specifications and spare prices; for extraction, the solvent required, its importability, the fume extraction needed and the disposal route; for Marshall, the complete list of what is included and what is extra, with bath capacity in specimens and how load and flow are recorded; for the core drill, core sizes, power source, water and slurry handling, mass and electrical protection; hot-work provisions - controlled oven or pot, gauntlets, face shield, apron; consumables with prices; services at the position; nominal voltage, frequency and plug pattern; and the warranty, commissioning and local service position. For any certification stated here, contact us for the latest copies of the relevant certificates before you tender on it.
Related ranges: concrete testing machines, cement testing equipments and soil testing machines for the rest of a highway materials laboratory, civil engineering lab equipments for soil strength and surveying, and oil and petroleum testing for flash point and viscosity fundamentals. The full set is listed under testing machines. For a quotation, tell us the destination country, the standards your customers name, and - before anything else - which extraction solvent you are permitted to use.
Ask us explicitly before ordering. The hand-operated, motorised centrifuge and reflux extractors all dissolve the bitumen out of the mix, and the solvents traditionally specified for that are chlorinated - effective, but toxic, with several now restricted or banned for general use in many countries and subject to strict handling and disposal rules where permitted. Ask which solvent the supplied method requires, whether it is lawful to import and use where you are, and what the disposal route is for used solvent and recovered aggregate. Plan a fume cupboard rather than a bench. We would rather answer that at the enquiry stage.
Hot bitumen is handled at well over a hundred degrees, sticks to skin and keeps transferring heat. Adhered bitumen is never pulled or wiped off - the skin comes with it; cool it immediately with copious cool water, leave it in place and send the casualty for medical attention. Post that rule on the wall before hot work starts, with long gauntlets, a face shield, an apron and closed footwear. Never heat bitumen with a naked flame - use a thermostatically controlled oven or pot. Keep water out of hot bitumen, because a damp sample foams violently. Never heat a sealed container.
Penetration is the depth a standard needle sinks under a standard load for a standard time at a standard temperature, and every one of those words is a specification. Bath temperature is the most sensitive: bitumen softens quickly as it warms, so a bath drifting by a degree moves the result. Ask what bath and thermostat come with the standard and semi-automatic penetrometers, and their stability. Treat the needle as a consumable: a blunted or burred needle penetrates less and reports the bitumen as harder than it is, so ask about spare needles and set a replacement rule.
The softening point result depends on the rate of heating, which the standard sets, and that is exactly the difference between the two records. The manual version relies on the operator controlling a heater; the electrically heated version controls the rate itself. For a laboratory reporting results to customers, buy the controlled version; for teaching, the manual one makes the point about heating rate rather well. Note also that the Saybolt and standard tar viscometers give efflux seconds, not viscosity in SI units - ask for a capillary bath or rotational viscometer if your specification needs those.
No - the machine is the smaller half. The method is a sequence: mixing at a specified temperature, compaction with a specified hammer and number of blows per face, conditioning in a water bath at a specified temperature and time, then loading in a breaking head at a specified rate while load and flow are recorded. Ask what is included and what is extra: hammer and pedestal, moulds and collars, extruder, water bath and thermostat, breaking head, flow and load measurement. The digital version records load and flow as a curve, which removes the commonest source of scatter. Ask the bath capacity in specimens.
For the pavement core drilling machine, ask the core diameters, whether it is petrol or electric - which decides whether it works away from a supply - the water supply and slurry collection, since diamond coring needs water, and the mass, because it is carried to site. A rotating cutter in a wet environment makes earth-leakage protection on an electric machine essential. The stripping value apparatus shows whether binder stays stuck to aggregate in the presence of water, which is what makes a surface ravel; for local aggregates of unknown affinity it is one of the most useful instruments here. Ask the method and test conditions.
Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.
Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.
Specifications - standard and version, bath capacity and thermostat stability, heating rate control, needle, ball and ring specifications, extraction solvent and fume extraction, Marshall accessories and core drill details - are confirmed in writing on the quotation. For calibration certificates, standards or approvals, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing notes: two records carry a letter suffix on the code rather than a new number, a format not used elsewhere in the catalogue that may not sort or search as expected; and the Saybolt viscometer has its name split into two words. Quote the code and the full product name together.
Ductility Testing Apparatus for Bitumen Testing - Designed to test three samples at the same time. The machine comprises of a carriage moving over a lead screw. An electric engine driven lessening gear unit guarantees smooth consistent speed and constant operation. The whole gathering is mounted with a stainless steel lined water shower totally encased in metal bound hardwood. It is furnished with an electric pump circulator and warmer. The temperature is controlled thermostatically. Two rates of travel i.e. 5 cm/min and 1 cm/min are given. Reasonable for operation on 230 V, 50 Hz, Single Phase, A.C. supply. Finish WITH: Ductility Mold, with Base Plate 3 Nos. Thermometer IP 38 C, Range: 23o C to 27o C.
BENKELMAN Beam for Bitumen Testing - Lightweight Aluminum development Ease of Transportation, Unique Telescopic Design Simplifying Field set up. Conservative, Thereby diminishing the amount of storage space needed. Benkelman Beam uses the system of utilizing adjusted pillar in conjunction with an appropriate vehicle to measure street flexure The enhanced Benkelman Beam is a helpful, precise gadget for measuring the avoidance of adaptable asphalts under moving wheel loads. Working on a basic lever arm guideline, the unit comprises. Provided with conveying case. Benkelman Beam with Digital Dial Gage additionally accessible at an additional cost..
BENKELMAN Beam: Lightweight Aluminum development
Loss on Heating(Thin Film Oven) for Bitumen Testing - This double purpose stove is intended to decide the loss in weight of bitumen and transition oils (Loss on Heating test) and the impact of warmth and air on asphaltic materials (Thin Film test). The unit is vigorously protected and has a twofold glass entryway for review the test chamber thermometer and tests. Temperature is controlled at 163? C ? 1? C by methods for a variable temperature controller and indoor regulator. Two turning stages are provided with every broiler: One acknowledges 9 standard entrance containers for the misfortune on warming test, alternate acknowledges two 140mm width test searches for gold thin film test. The stages are pivoted at 5 to 6 rpm by an outer engine. Chamber measurements 350 x 350 x 350mm (length x width x stature) - Series Loss on Heating/Thin Film Oven Operating Voltage 230 V A.C. Single Phase - Aluminum Test Pan 140mm distance across x 9.5mm profound..
Moving Thin Film Oven for Bitumen Testing - The Rolling Thin Film Oven Test is utilized to acquire homogeneously matured material by the utilization of warmth and air to mimic these effects in traditional blending.The oven is of double wall construction with side vents and of the heated convection type of air Circulation. An electronic controller keeps up the temperature at 163+ 0.5? C. A vertical, carriage is provided to help 8 glass test compartments, which are pivoted at 15+ 0.2rpm. An outlet opening 1mm in measurement is associated with a 7.6m length of copper tubing and stream meter which controls the wind current at 4000 ml/min. Air is blown into the example compartments at their most minimal purpose of go by an interior airjet. The broiler is provided with 8 glass test compartments and a thermometer (IP 47C/ASTM 13C). Inner measurements 483 x 450 x 381mm. A different wellspring of packed air is required to work this stove. - Operating Voltage 230 V A.C., Single Phase - Certified temperature control - Digital Display - Internal Fan ACCESSORIES : - Compressor Spares - Glass test compartment Thermometer.
Automatic
Road Unevenness Recorder for Bitumen Testing - for engineering
comprises of a trailer of single wheel with a pneumatic type mounted on
chaise over which are installed profile recording and integrating
devices. The machine has panel board fitted with two nos. of electronic
counters for counting the unevenness index value. The digital meter for
unevenness index value from 50 meters. To 1000 meters. For automatic
displaying of UI values Data Storage in memory to display on panel
board. The operating SPEED OF THE MACHINE IS 30 + 1-1/2 KM/Hr, and is
towed by a vehicle. Its wheel on the pavement surface and the vertical
reciprocating motion of the axle is converted into unidirectional
rotatory motion by the integrator unit, the accumulation of this
unidirectional motion is recorded by operating sensor inserted in the
circuit of electronic counter once for every one centimeter of
accumulated unevenness. Wheel revolutions are also indicated on the
other electronic counter through a sensor actuated by the cam fitted on
the hub of the wheel after every one meter of the wheel movement. There
is an arrangement introduced for digital display of unevenness index
value with a setting of distance form 50 mtrs, to 999 mtrs. In this
arrangement suppose we get the distance value of 50 meters. Then after
every 50 meters. We will get calculated U.I. Values on the digital meter
In such manner we can set distance in 200 meters, and so on up to 9999
meters. There is a memory of keeping UI values upto last 999 memories.
The machine can be supplied with a pair of transportation wheels which
will permit towing speed upto 60km/Hr, without disturbing the accuracy
of the unevenness measuring wheel. An Automatic profile recording system
for making a continuous record of the relative movements of the
pneumatic wheel to yield a recorded surface profile on graduated
recording paper. A motor is fitted on the machine which is driven
through the sensor and electronic controller form the wheel of the unit
and the vertical motion of the axle drives a pen which marks on the
moving recording paper. The pavement profile is recorded on the
recording paper in the ration of 1:400 for and 1:1 unevenness of the
road surface. USES : The degree of surface finish or the, riding quality
of the road/runway pavement can be assessed. The system will record
surface irregularities of highways and runways, which can be immediately
attended to for rectification. The records so obtained can be well
studied for judgment and decision in classifying pavement surfaces by
the authorities for serviceability of the pavement and stage for repair
or upgrading. Helps in evaluating the performance of the Specifications
adopted for roads and runways and the developments of unevenness with
age and under traffic. ADVANTAGES: - Timely improving the riding quality
will result in:- - Low maintenance cost of pavement and vehicles -
Increase in the load carrying capacity of the vehicle - Prolongs the
working life of the vehicles and the driver - Comfortable ride to road
users - Less fatigue to d driver in the interest of road safety -
Minimize stresses in both road structures and vehicles FEATURES : -
Helps in assessing and improving the riding quality of pavement - Gives
unevenness index value of pavements - Data obtained with various units
is inter comparable - Safe and stable in operations - Durable and
dependable - Cent percent indigenous - A compact and versatile unit at
economic price - Automatic Road Unevenness Recorder is a single wheel
trailer and towed by vehicle like jeep at a speed of 30km/hr uses a
micro-controller, which contains a microprocessor and is designed for
industrial is used - 12 volts 11 plate Battery is used - The distance
section segment size is adjustable as per the requirement form 50 meters
to 9999 meters - Keys are positioned in such a way that the user uses
in intuitively - Date Memory EE RAM Date Memory can store up to 999
segments data, battery backup to remember data TRANSPORTATION WHEELS :
Two numbers transportation wheel assemblies with type size 4.00x8, which
will permit speed upto 60Km/Hr. The design of these such as to produce a
load on the towing hitch of approximately 65 kg. Spring retainers are
provided for locking up, the unevenness measuring wheel, so that it
could be locked in positions and the unit carried on these
transportation wheels without disturbing the accuracy of the
unevenness-measuring wheel. Wheel assembles are fitted with shockers and
a spare tyre is also provided. The wheels can be fitted to machine
within few minutes. Transportation wheels are also useful for
transportation of the machine when the unevenness-measuring wheel gets
punctured while in use..Automatic
Road Unevenness Recorder for Bitumen Testing - for engineering
comprises of a trailer of single wheel with a pneumatic type mounted on
chaise over which are installed profile recording and integrating
devices. The machine has panel board fitted with two nos. of electronic
counters for counting the unevenness index value. The digital meter for
unevenness index value from 50 mtrs. To 1000 mtrs. For automatic
displaying of UI values Data Storage in memory to display on panel
board. The operating SPEED OF THE MACHINE IS 30 + 1-1/2 KM/Hr, and is
towed by a vehicle. Its wheel on the pavement surface and the vertical
reciprocating motion of the axle is converted into unidirectional
rotatory motion by the integrator unit, the accumulation of this
unidirectional motion is recorded by operating sensor inserted in the
circuit of electronic counter once for every one centimeter of
accumulated unevenness. Wheel revolutions are also indicated on the
other electronic counter through a sensor actuated by the cam fitted on
the hub of the wheel after every one meter of the wheel movement. There
is an arrangement introduced for digital display of unevenness index
value with a setting of distance form 50 mtrs, to 999 mtrs. In this
arrangement suppose we get the distance value of 50 mtrs. Then after
every 50 mtrs. We will get calculated U.I. Values on the digital meter
In such manner we can set distance in 200 mtrs, and so on upto 9999
mtrs. There is a memory of keeping UI values upto last 999 memories. The
machine can be supplied with a pair of transportation wheels which will
permit towing speed upto 60km/Hr, without disturbing the accuracy of
the unevenness measuring wheel. An Automatic profile recording system
for making a continuous record of the relative movements of the
pneumatic wheel to yield a recorded surface profile on graduated
recording paper. A motor is fitted on the machine which is driven
through the sensor and electronic controller form the wheel of the unit
and the vertical motion of the axle drives a pen which marks on the
moving recording paper. The pavement profile is recorded on the
recording paper in the ration of 1:400 for and 1:1 unevenness of the
road surface. USES : The degree of surface finish or the, riding quality
of the road/runway pavement can be assessed. The system will record
surface irregularities of highways and runways, which can be immediately
attended to for rectification. The records so obtained can be well
studied for judgment and decision in classifying pavement surfaces by
the authorities for serviceability of the pavement and stage for repair
or upgrading. Helps in evaluating the performance of the Specifications
adopted for roads and runways and the developments of unevenness with
age and under traffic. ADVANTAGES: - Timely improving the riding quality
will result in:- - Low maintenance cost of pavement and vehicles -
Increase in the load carrying capacity of the vehicle - Prolongs the
working life of the vehicles and the driver - Comfortable ride to road
users - Less fatigue to d driver in the interest of road safety -
Minimize stresses in both road structures and vehicles FEATURES : -
Helps in assessing and improving the riding quality of pavement - Gives
unevenness index value of pavements - Data obtained with various units
is inter comparable - Safe and stable in operations - Durable and
dependable - Cent percent indigenous - A compact and versatile unit at
economic price - Automatic Road Unevenness Recorder is a single wheel
trailer and towed by vehicle like jeep at a speed of 30km/hr uses a
micro-controller, which contains a microprocessor and is designed for
industrial is used - 12 volts 11 plate Battery is used - The distance
section segment size is adjustable as per the requirement form 50 meters
to 9999 meters - Keys are positioned in such a way that the user uses
in intuitively - Date Memory EE RAM Date Memory can store up to 999
segments data, battery backup to remember data TRANSPORTATION WHEELS :
Two numbers transportation wheel assemblies with type size 4.00x8, which
will permit speed upto 60Km/Hr. The design of these such as to produce a
load on the towing hitch of approximately 65 kg. Spring retainers are
provided for locking up, the unevenness measuring wheel, so that it
could be locked in positions and the unit carried on these
transportation wheels without disturbing the accuracy of the
unevenness-measuring wheel. Wheel assembles are fitted with shockers and
a spare tire is also provided. The wheels can be fitted to machine
within few minutes. Transportation wheels are also useful for
transportation of the machine when the unevenness-measuring wheel gets
punctured while in use..
Compaction Pedestal (NBTE-M24) for Bitumen Testing - Comprising a 300mm sq x 25mm thick steel plate complete with 4 tie rods and securing nuts. A mould clamp and hammer guide are fitted to the plate. The unit is supplied complete with a laminated hardwood block. Compaction Pedestal (NBTE-M24A): Comprising a 12? square x 1 inch thick steel plate secured to an 8? square x 18? high wooden block. 4 angle brackets are supplied for securing the block. A specimen mould holder is fitted to the steel plate. COMPACTION HAMMER: The hammer has a 4535 g sliding weight with a free fall of 457mm. PAPER DISCS: Non-absorbent, 11cm diameter pack of 100. STEEL BLOCK: 100mm diameter x 50mm height. For heating the compaction hammer foot. ACCESSORIES: - Proctor/core Cutter - Extruder Spares - Base Plate for compaction mould - Base plate for compaction mould - Filling / Extraction Collar For Compaction Mould.
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