Asphalts tend to behave as slightly non-Newtonian fluids, especially at lower temperatures. The advantage of using the viscosity test as compared with the penetration test is that the viscosity test measures a fundamental physical property rather than an empirical value. Viscosity is defined as the ratio between the applied shear stress and induced shear rate of a fluid. The bitumen content of a bituminous material is measured by means of its solubility in carbon disulfide. A hot storage stability test was carried out for polymer modified binder. The penetration test can be used to designate grades of asphalt cement, and to measure changes in hardness due to age hardening or changes in temperature. The study of these reaction forces is an essential step in the subject of mechanics of fluids which can be applied to hydraulic machinery such as the Peloton wheel and the impulse turbine.
Asphalts tend to behave as slightly non-Newtonian fluids, especially at lower temperatures. You can change your cookie settings through your browser. To investigate the reaction force produced by the impact of a jet of water on to various target vanes. An asphalt with a high flash point is more likely to have a lower hardening potential in the field. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. In recent years, the flash point test results have been related to the hardening potential of asphalt.
Standard Test Method for Penetration of Bituminous Materials (ASTM D-5)_百度文库
Consequently it is essential that they are carried out in strict compliance with the recommended procedures if they are to be accurate measurements of the bitumen's properties. Contamination of an asphalt cement by such materials can be indicated by a substantial drop in flash point. The display and penetration arm are adjustable to permit the testing of samples immersed in a thermostat bath. Automatic Digital Bitumen Penetrometer. Write down the Branches of Geology To Perform Penetration Test on Bitumen. Stay informed - subscribe to our newsletter.