Dynamic and kinematic viscosity of bitumen

ASTM D21710 – Kinematic viscosity characterizes flow behavior. The method is used to determine the consistency of liquid bitumen as a determining factor in establishing consistency in shipments or sources of supply. Specifications are generally at temperatures of 60 and 135°C.

This test method covers the procedures for determining the kinematic viscosity of liquid bitumens, road oils and distillation residues all at 60°C and liquid bituminous binders at 135°C in the range of 6 to 100,000 mm²/s [cSt].

The results of this test method can be used to calculate the viscosity when the density of the test material at the test temperature is known or can be determined.

ASTM D2171 – Viscosity at 60°C characterizes flow behavior (dynamic) and can be used for specification requirements for cutback asphalt and bituminous binders. This test method covers the procedures for determining the apparent viscosity of the bituminous binder by capillary viscometers under vacuum at 60°C. It applies to materials with viscosities in the range of 0.0036 to more than 20,000 Pa·s [0.036 to more than 200,000 P].

ASTM D2170 | ASTM D2171

PRODUCTS

VISCOSITY BATH | 20 L | 3 SAMPLES

Specifications

TV2000 MKII 230 V 50/60 Hz
Temperature range: T ambient at 230°C.
Temperature stability is ± 0.01 K
Ultra precise temperature control
Determination of kinematic viscosity
Thermometer calibration
Density and reaction rate measurement
Bath volume 20 liters
Three openings to hold samples.
Integrated cooling coil for working below room temperature
Accuracy 0.01°C
Stainless steel construction with 25mm thick rock wool insulation
Ensures exceptionally stable temperatures which are further improved by an ingenious agitation mechanism.
The bath is equipped with adjustable feet
The bath cover has a number of round holes of Ø 51 mm with covers

F075.137.0771

VACUUM SYSTEM | TVS

Specifications

TVS 230 V digital vacuum system controller
Precise preselected negative pressure – 300 mm Hg for ASTM D2171.
Range of 20 .. 320 mm Hg [30 .. 430 mBar].
The pump maintains the vacuum within 0.5 mm Hg of its set point.
The internal pump provides a vacuum which can be set on the front panel.
The set point is kept in memory and automatically defined after power-up.
The internal tire regulates the vacuum around this set point.
In the event of a leak or a change in volume, the electronic feedback system will maintain the preset vacuum.
Extremely small footprint compared to some other vacuum systems