Rheometer for building materials RHEOTESTÒ RN
Together with the manufacturer of measuring devices RHEOTEST Messgeräte Medingen GmbH a rheometer for building materials has been developed after a draft by the research laboratory R. VOGEL - FORSCHUNG.
The special merit of this device is its universal applicability in the determination of material properties. The materials investigated range from fluids to solids.
It is well suited for both rotation tests and creep tests. The measuring drive enables investigations to be made that are focussed on shear strain and shear velocity.
The field of application of the rheometer is not limited to building material laboratories and material testing institutes, it is also part of the equipment of research, development and teaching institutions as well as of plants of the basic industry dealing with building materials and their components. It may be employed in routine production control, in dealing with complaints, in testing the effects of modified components and last not least in the development of new building materials.
The technical data of the system of measuring head - control unit - software by RHEOTEST which was tested in all stages of development by R. VOGEL - FORSCHUNG are as follows:
The operation of the device requires a computer with pentium processor, a MS-Windows-oriented operating system and a screen. The connection between PC and control unit will be handled via the serial port.
For the investigation of plaster mortar and structural mortar
Both variants of sample preparation imply the usual defined dynamic loading in the preparation process. At the same time disturbing macroscopic air inclusions are expelled from the test material by the exterior forces.The ring segment sensor is immersed in the prepared sample and the programmed test is started. In an optimum measurement procedure with this rheometer arrangement we may determine by means of the measured values and/or pairs of values [ T½t; j½t ]:
of fresh mortar in dependence on the water/dry mortar ratio, on the rest period and/or the reaction time and on the absorbing capacity of the plaster base. A further evaluation of the various experiments by means of an efficient software makes it possible to determine the material-specific parameters of the fresh mortar and to identify significant components of the mixture. With a view to minimising the experimental expenditure the flow diameter acc. to DIN-EN 459 may serve as orientation.
The RHEOTESTÒ RN enables
In the production of building materials, especially of dry mortar, it is employed in the fields of
In the development and research of building materials it may be used for
The whole spectrum and the versatility of mortar building materials is taken into consideration by the use of further sensors.
RHEOTEST is a registered trademark of RHEOTEST Medingen GmbH. All other names of products, services and companies may be trademarks or registered trademarks or service marks of its owners.