DIN EN 14770:2012-08

This European Standard deals with a number of methods using a dynamic shear rheometer (DSR) capable of measuring the rheological properties of bituminous binders. The procedure involves determining the complex shear modulus and phase angle of binders over a range of test frequencies and test temperatures when tested in oscillatory shear. A known oscillatory shear stress is applied to the temperature controlled test geometry, in which the bituminous test specimen is held. The binder's strain response to the stress is measured. Alternatively, a known oscillatory shear strain is applied to the test specimen and the resulting shear stress is measured. Except for specific purposes, the test is performed in the region of linear viscoelastic behaviour. The committee responsible for this standard is Joint Working Group NA 062-03-32 GA "Bitumen; Prüfverfahren und Anforderungen für die Bindemittel" ("Bitumen; test methods and specifications of binders") at the Materials Testing Standards Committee (NMP) and the German Civil Engineering Standards Committee (NABau) at DIN.