A dynamic shear rheometer, commonly known as DSR, is used for research and development as well as for quality control in the manufacture of a wide range of materials. Dynamic shear rheometers have been used since 1993 when Superpave was used for characterising and understanding high temperature
rheological
Rheology (; ) is the study of the flow of matter, primarily in a fluid (liquid or gas) state but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied ...
properties of
asphalt
Asphalt most often refers to:
* Bitumen, also known as "liquid asphalt cement" or simply "asphalt", a viscous form of petroleum mainly used as a binder in asphalt concrete
* Asphalt concrete, a mixture of bitumen with coarse and fine aggregates, u ...
binders in both the molten and solid state and is fundamental in order formulate the
chemistry
Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules a ...
and predict the end-use performance of these materials.
This is done by deriving the complex modulus (G*) from the storage modulus (elastic response, G') and loss modulus (viscous behaviour, G") yielding G* as a function of stress over strain. It is used to characterize the viscoelastic behavior of asphalt binders at intermediate temperatures from .
References
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* {{cite web , title=Rheometer Bitumen, Dynamic Shear Rheometer , website=RHEOTEST Medingen - Lieferant Viskosimeter und Rheometer , date=2014-08-19 , url=http://www.rheotest.de/english/laboratory-instruments/dsr-bitumen-rheometer-rheotest-rn-4-3/ , archive-url=https://web.archive.org/web/20140819084520/http://www.rheotest.de/english/laboratory-instruments/dsr-bitumen-rheometer-rheotest-rn-4-3/ , archive-date=2014-08-19 , url-status=dead , language=de
Fluid mechanics
Rheology
Materials testing