Assertion: viscometer's speed | /r/HasProperty | 20 rpm
Facets:
Source sentences:
text: The basic RV test measures the torque required to maintain a constant rotational speed (20 RPM) of a cylindrical spindle while submerged in an asphalt binder at a constant temperature.
text: The basic RV test measures the torque required to maintain a constant rotational speed (20 RPM) of a cylindrical spindle while submerged in an asphalt binder at a constant temperature (typically 275°F (135°C)).