![]() * Place the tar viscometer in the cup so that the top surface of the cup is level. The Procedure of Bitumen Industrial Viscosity Test To measure industrial viscosity, use equipment such as a tar viscometer, cup, water bath, stirrer, measuring cylinder, thermometer, and stopwatch. The main difference between them is the size of the orifice of the cup. There are different types of cup viscometers. Then, the time it takes for the standard volume of fluid to pass through the drain hole or orifice of the cup is recorded.Ī cup viscometer is often used to determine the viscosity of emulsions,pure bitumen, and cutback bitumen. In this method, first, at a certain temperature, 50 ml of bitumen is poured into the metal cup of the device. ![]() ![]() Using a cup viscometer is a simple method to determine viscosity at a certain temperature. The dynamic viscosity measured by a cup viscometer is called industrial viscosity. ![]()
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