The ASTM D2170/D2170M-18 standard, published by the American Society for Testing and Materials (ASTM), describes a test method for determining the kinematic viscosity of liquid asphalts, road oils, and distillation residues of liquid asphalt, all at 60 degrees, and liquid asphalt binders at 135 degrees with flow rates ranging from 6 to 100.000 mm²/s .
The results of this test method are used to calculate viscosity when the density of the test material at the test temperature is known or can be determined. The calculation method is included in the standard annex (Annex A1).
This test method is suitable for use at other temperatures and lower kinematic viscosities, but accuracy is based only on determinations made at viscosity ranges of 30 to 6000 mm2/s on liquid asphalts and road oils at 60 degrees and on asphalt binders at 135 degrees.
Conditioned or recycled modified asphalt binders are typically non-Newtonian fluids under the conditions of this test. The viscosity determined by this method is assumed as asphalt binders behave like Newtonian fluids under the conditions of this test. When the flow in a capillary tube is not Newtonian fluid, the shear rate determined by this method may be invalid. The presence of Newtonian non-fluid behavior for the test conditions is confirmed by measuring the viscosity with viscometers with different sizes of capillary tubes.
Meanwhile, mercury is recognized by the United States Environmental Protection Agency (EPA) and many organizations as a hazardous substance that causes central nervous system, kidney, and liver damage. Mercury or its vapors are harmful to health and corrosive to materials. Care should be taken when working with mercury and products containing mercury.
Briefly, the test method described in the mentioned standard is a test method for determining the kinematic viscosity of a liquid by measuring the time it takes for a liquid volume to flow under gravity through a calibrated glass capillary viscometer in a viscosity bath.
Among the numerous tests, measurements, analyses, and evaluations our organization provides for businesses in various sectors, we also offer standard testing services for the kinematic viscosity of asphalt under the ASTM D2170/D2170M-18 standard, utilizing a trained and expert staff and advanced technological equipment.
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