Visit the viscosity test of bitumen article for more informationĪ specific gravity test measures the ratio of bitumen weight to the weight of the water with the same volume.Įach bitumen has a unique specific gravity, thus allowing us to classify it. To calculate viscosity, multiply the calibration coefficient of the viscometer by the time in seconds. Viscosity also indicates a bitumen’s ability to compact the aggregates better together to have a uniform asphalt.īy predicting both viscosity of bitumen under two different temperatures, 60° C and 135° C, we can have sufficient information about the best temperature we should mix and compact bitumen with aggregates.īy controlling the viscosity of bitumen, you can experience better resilience, reduction in maintenance costs, lower fatigue cracking, and less temperature susceptibility.īitumen viscosity is generally tested by placing a sample in a viscometer, then measuring the flow-out time under specified conditions. That’s why they found it necessary to perform an experiment to show these differences.

A higher amount of viscosity shows that it flows harder.Īfter many years of research and experience, engineers found two bitumen with the same degree of penetration at 25° C behave differently at higher temperatures. The viscosity test measures the bitumen resistance to flow. If you can not see the Infographic, click here. To better understand each test, we suggest you read the summarized bitumen tests infographic before reading any description. See the penetration grade and viscosity grade of bitumen articles to get more information about them. Flash point test is one of them which is required in many countries. Viscosity test is also reliable in classifying bitumen based on its temperature susceptibility.Īlso, some tests have been introduced to the industry to enhance the safety of bitumen application. Penetration and viscosity tests are also the main basis for classifying various types of bitumen. Also, with help of them, we can predict the hardness or elasticity of bitumen at various temperatures. These testing methods evaluate one of the most important properties of bitumen: its resistance to flow.

Tests that measure the consistency of bitumen are penetration, viscosity and ductility tests. We can reduce the risk of cracking and damage on the asphalt by using bitumen tests and checking the quality of the bitumen binder, then choosing the right bitumen for desired conditions. This reduces the quality and life span of the asphalt.

It can also be used to classify bitumen by its physical properties.Ĭracks in asphalt can be caused by factors such as traffic and temperature changes. In order to choose proper bitumen for road construction and other industries, bitumen tests are introduced.īitumen tests help us to determine the properties of bitumen and examine its quality before using it, during the application, and after aging. Bitumen is a material with different properties.

At home viscosity test