Aggregate Testing Equipments
  Bitumen/Asphalt Testing Equipments
  Cement Testing Equipments
  Concrete Testing Equipments
  General Lab Testing
  Material Testing Equipments
  NDT Concrete Testing Equipments
  Paint, Oil, Petrolium Testing Equipments
  Rock Testing Equipments
  Soil Testing Equipments
  Compression Testing Machine
Bitumen Testing Equipment / Asphalt Testing Equipments
Our outstanding manufacturing facility have enabled us in producing instruments for testing the bitumen. Bitumen in particular is a mixture of organic liquids which are highly viscous, black, sticky, entirely soluble in carbon disulfide. This material is composed of highly condensed polycyclic aromatic hydrocarbons. For testing this bitumen on varied parameters, we use various equipment. Following are the products we are offering under this category:
KEWIL Ring and Ball Apparatus
Ring and ball apparatus is meant for determining soft point of bitumen. Using various scientific principles it is also used in petroleum industry, construction projects, paint industry etc.

The ring & ball apparatus is used to determine the temperature at which a sample of bituminous material loaded by a steel ball of 9.5 mm diameter, drops a specified distance when heated under specified conditions. It is used to determine softening point of bitumen.
KEWIL Drilling Machines
Drilling machines are cutting tools used to create cylindrical holes. They are also called drill bits. Bits are held in a tool called a drill, which rotates them and provides axial force to create the hole. They are suitable for taking out cylindrical cores upto diameter of 6" (150mm) x 12" (300mm) high from rocks, concrete blocks or air craft runway slabs.
KEWIL Ductility Testing Apparatus
It is a very useful equipment for construction industry for conducting ductility tests on bituminous material. It is also equipped with certain accessories.

Bitumen binders are used in flexible pavement construction. It is important for bituminous material to form ductile thin film around the aggregates, which serves as a binder. If the binder material does not have sufficient ductility, it leads to spurious pavement surface and leads to development of cracks. Therefore it is extremely important to carry out the ductility test on bituminous material.

Ductility is defined as distance in centimeters to which a standard briquette of bitumen can be stretched before the thread breaks.The briquette is stretched at a rate of 50 mm /min. +/2.5 mm per minute at a temperature of 27ºC +/0.5ºC.

The apparatus consists of water bath with a thermostatic heater and a circulating pump to maintain uniform water temperature One half of the briquette moulds is fixed on a fixed plate in the water bath, the other half of the briquette mould is fixed to a carrier which slides over a rotating the threaded shaft with a clutch. The motor and gears to rotate the shaft are housed in a cabinet fixed above the other end of the bath. A pointer fixed to the carrier moves over a scale graduated from 0-110 cm x 1 mm fixed on the bath with “0” (Zero) of the scale towards the fixed plates side. The rotating shaft has 2 speeds of travel for the bracket, 5 cm/min and 1 cm/min. selected by a clutch.

Water bath inside is of S. steel, its is an insulated water bath Water bath is provided with a drain. A heater with thermostatic control is fixed inside the water bath. Control switches for motor pump heater and indicator lamps are fixed at a convenient place on the water bath. Complete with three briquette moulds and one base plate, steel all made of brass operates on 230V A.C. supply single phase.

Spares :
Ductility mould with base plate made of Gunmetal.

KEWIL Marshall Stability Test Apparatus
It is a very important instrument ideal for carrying out Marshall stability test of bituminous mixture. It is easy to operate, highly efficiency rate and has high degree of automation.

The apparatus is suitable for conducting Marshall stability test of bituminous mixture. The apparatus can truly judge the fail point of bituminous mixtures to design the match ratio or check the construction quality of bitumen road surface. The Marshall stability of a mix is defined as a maximum load carried by a compacted specimen at a standard test temperature of 60º C. The test is applicable to hot mix designs using bitumen and aggregates upto a maximum size of 25 mm.

KEWIL Standard Penetrometer : IS : 1203
Standard Penetrometer is Used to determine grade of bitumen. The penetration tests determine consistency of bitumen for the purpose of grading Depth in units 1/10 of millimeter to which a standard needle having a standard weight will penetrate vertically in a duration of five seconds at a temperature of 25 ºC determines penetration for gradation. Consists of a vertical pillar mounted on a base provided with leveling screw The head together with dial gauge rod and cone (or needle) slides on a pillar and can be clamped at required height. A rack and pinion and pointer assembly provides adjustment of needle or cone tip to sample. It incorporates a slipping clutch mechanism which make reading of penetration and subsequesnt restting a simple and accurate operation The dial is graduated in 400 1/10th mm sub-divisions, and the red needle pointer against black figures makes for easy reading.

Supplied complete with one 50 gram weight, and one 100 gram weight and one needle.

Accessories :
Penetrometer Cone : made of Gunmetal and is fitted with a hardened and ground detachable steel, tip and a stem, Total moving weight is 150 + 0.1 gram.

KEWIL Automatic Bituminous Compactor (Electrically Operated)
KEWIL Compactor automatically stimulates hand compaction as specified in ASTM D-1559 and develops a uniformity in the test procedure. The apparatus consists of a chain drive coupled to the motor through a gear box, and carries a locking device which lifts and releases the hammer through a specified height. Fitted with a counter which trips the motor automatically after 50 or 75 strokes as set on it. Suitable for operation on 220 V, 50 Hz, single phase supply.
KEWIL Stripping Value Apparatus
Here is an informative page on important features, specifications and applications of Stripping Value Apparatus, used to measure stripping value of bituminous mixture.

This apparatus is used to determine stripping value of bituminous mixture mixes having size 1.0 mm to 75 microns. It is also used to measure the resistance of bituminous mixture to stripping of bitumen from rock particles.

For determining the resistance of bituminous mixture to stripping of the asphalt from aggregate particles and for judgeing the adhesive capacity of bituminous material. Applied to aggregate fraction passing 9.525 mm sieve and retained on No.8 Sieve.

It consists of a disc on which four bottles are mounted. The disc rotates at a rate of 100 r.p.m. approx. The samples are kept in bottles and agitated for 15 minutes. The percentage of aggregate stripped is estimated by visual observation. Provided with a time switch. Suitable for operation on 220 V, 50 Hz, single phase supply.

KEWIL Asphalt & Concrete Floor Saw
Types of Asphalt & Concrete Floor Saw

Basically, there are two types of asphalt & concrete floor saw :
  • Wet saw
  • Dry saw
Salient Features
  • The engine of the asphalt & concrete floor saw is driven by diesel, petrol or kerosene.
  • It has a diamond wheel of diameter 300 mm, which is suitable for cutting upto depth of 110 mm and is supplied with standard outfit.
  • The engine is attached to a trolley, which has a water tank that supplies water to the cutting blade to keep it cool during cutting operation.
  • There is a provision of adjustment for controlling the depth of cut.
  • There is a safety guard provided over the diamond wheel.


  • The saw is ideal for repair work to road surfaces and floor surfaces.
  • Suitable for cutting out expansion joints.
  • Can be used as slots for cables and induction loops.
  • Ideal for straightening asphalt, concrete, screeded floors, etc.
  • Concrete & asphalt industry
  • Construction industry
  • Road repair
  • Floor sawing
  • Trenching
  • Pile cutting
  • Demolition
  • Bridge work
  • Pipe cutting
  • Brick & Tile cutting
KEWIL Benkelman Beam
Benkelman Beam is an apparatus, which measures the deflection of a flexible pavement under moving wheel loads. This is a simple device and forms the basis of empirical diagnosis of pavement defects.

Salient Features
  • The equipments is light weight and made of aluminium for easy portability and use at any test location.
  • Length of the Benkelman beam is 250cm and net weight is 15kg.
  • The apparatus is compact, unique and possess a telescopic design for quick set up and storage during transport to the test location.
  • The equipment is supplied in two parts for assembling on site with easy Hand Tools.
  • One end of the beam rests at a point under investigation while the beam is pivoted in the centre.
  • The free end carries a dial gauge to record the deflections. The other end is kept on a stable platform.
  • Provided with anti-vibration systems for accurate measurement of pavements.
  • Provided with dial indicator and accessories.
  • The beam is put in contact with the pavement under test between the tires of the vehicles.
  • The measurement of the deflection is carried out when the vehicle passes over the test area.
  • Direct reading of deflection dial indicators eliminate the need for conversions or calculations during measurement.
  • It is used to measure the deflection of the road surface when loaded by the wheels of vehicles.
  • Wooden carrying case for the Benkelman Beam
  • Benkelman indicator gauge, calibration unit, etc.
  • Pavement structure analysis
  • Roadways construction
  • Road surface deflection measurement
  • Plate test
KEWIL Bitumen Extractor/Centrifuge Extractor
This equipment is used to determine and check bitumen percentage in bituminous mix. It is used for a quantitative determination of bitumen in hot-mixed paving mixtures and pavement samples.

There are basically two types of centrifuge extractors, which are widely used to evaluate and monitor percentage of bitumen in a bituminous mixture.
• Hand Operated
• Motorised

KEWIL Centrifuge Extractor, Hand Operated
The apparatus consists of a removable cast aluminium rotor bowl of capacity 1500 g, mounted on a vertical shaft.

• There is a filter paper disc, pressed in between the rotor bowl and cover plate by a knurled nut.
• The bowl assembly is enclosed in a housing mounted on a cast aluminium body.
• The bowl and shaft are rotated fast manually by enclosed gears in the cast body and handle.
• The gears operate in oil bath with splash lubrication.
• Solvent is introduced during the test through the holes in the cap of the housing.
• A drain is provided to collect dissolved bitumen coming out of the rotating bowl and getting collected in the housing.

Centrifuge Extractor, Electrically
The motor drive gives 3500 r.p.m. to the rotor bowl. Operation on 230 Volts Single Phase, 50 cycles. A.C. supply.

Pavement construction
Asphalt & bitumen industry
Road construction
Bridge construction
Calibration laboratories
Biotechnological testing
Dam construction

Manufacturer, Supplier and Exporter of high quality Bitumen Testing Equipments / Asphalt Testing Equipments like Ring and Ball Apparatus, Drilling Machines, Ductility Testing Apparatus, Marshall Stability Test Apparatus, Standard Penetrometer : IS : 1203, Automatic Bituminous Compactor (Electrically Operated), Stripping Value Apparatus, Stripping Value Apparatus, Asphalt & Concrete Floor Saw, Benkelman Beam, Bitumen Extractor/Centrifuge Extractor.

 All © Copyrights 2009 reserved by KEW INDIA