Tar Viscometer

Tar Viscometer

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Viscosity is calculated indirectly by redwood viscometer (which is used to find the viscosity of oil) is used to find the viscosity of bituminous material, after modifying the diameter of the orifice. The behavior and properties of oil and bitumen are different but same procedure and criteria is used to find the viscosities of both the materials the bituminous material is tested alone presence of aggregates is neglected the test is conducted at standard temperature which neglects the practical condition of variation in the temperature assumption made while using the redwood viscometer about type of flow affects the results proper control over the binder viscosity has to be exercised not only at each and every stage of construction but also during service period of the pavement It can be said that low valve of viscosity indicates high fluidity which may not provided binding action but may just lubricate the movement of aggregate.

Features:-
Thermometer
Run off cock
Supporting legs
Heating tube of 15 mm dia
Vane
Electrical heating with energy Regulator Control
Electrical heating with Digital Indicator and Regulator
Compact design
High tensile strength
Long service life
It better in the presence of water

Technical Specification:-
It is produced by destructive distillation of wood or coal in the absence of air
It has black to brown color
It coats aggregate more easily and retains
It has more quantity of free carbon
It has inferior weather resisting properties
Its viscosity varies greatly with the temperature
Its setting time is more
It is more adhesive
It is cheap
It is less durable
It hardens quickly
Percentage carbon content in it is more
It is available in viscous state

Accessories:-
Spare silver plated cup 10mm or 4mm
Measuring cylinder 100ml cap.
IP 8c low range thermometer
IP 9c medium range thermometer
IP 10c high range thermometer