The
Schleibinger range of testing systems is specifically designed and developed
for the testing of construction materials such as cement paste, mortar,
fine concrete, plaster etc. The range includes rotational viscometers,
compact viscometers, freeze/thaw units, shrinkage cones and shrinkage/expansion
units.
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Viskomat
NT
The Schleibinger
Viskomat NT is a versatile rotational viscometer for determining
the workability of fine-grained building materials such as cement
paste, mortar, fine concrete, plaster etc. with a maximum particle
size of 2mm. The data available includes: The Viskomat NT is a true speed controlled rate viscometer driven by a high precision synchron motor. Each rotation is resolved within 200,00 steps. It allows ramping from 0.001 rpm to 200 rpm in both directions to record flow curves and yield points. The torque up to +/-250 Nmm is measured by a measured by a special transducer. |
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The Schleibinger BT2 is a compact rheometer for fresh concrete. In contrast to the spread table the concrete is tested at various loads. Therefore you can determine a relative yield stress and a relative viscosity. The construction avoids structural breakdown and segregation during measuring. The BT2 is small, power independent and easy to use. A sample of test material is placed in the sample container. The BT2 is fixed into the middle of the sample container and turned one revolution by hand. The internal software measures the data by monitoring the momentum on the three probes and the angular velocity. On completion of the measurement the readings can be wirelessly transferred and displayed on an external Palmtop. As with most rheometers the shear stress is measured at various speeds when a probe is rotating in the container. With the BT2 you will get three speeds at the same time. So one revolution is enough. You will never measure in the same place twice. The system is driven by hand, and all the electronics are power independent. The ideal instrument specially designed for the building site. |
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The Schleibinger CDFCIF system is for testing the freeze/thaw resistance of concrete according to EN 12390-9, RILEM and other standards. The advantage of this test method is in the very good reproducibility of the results. With this test procedure, the weathered quantity of a surface is measured by a number of freeze-thaw cycles. The test specimens are thereby placed in a solution of sodium chloride to stress the surface. The result gives an estimate for the resistance to freeze-thaw cycling for the concrete being tested. Durability is, alongside the strength, one of the most important properties of concrete. It depends on the type of building and the environmental conditions. Especially in road construction a high resistance to freeze-thaw cycles is of major importance and is thus one of the major criteria in testing. |
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The Schleibinger Shrinkage Cone is a laser based system for non-contact measurement of the early shrinkage of pastes (up to several weeks), mortar and concrete. 
Technical Specifications |
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The Schleibinger Shrinkage Drain is for measuring the long-time shrinkage and expansion of mortar and concrete. It is made of a 1m long u-shaped stainless steel profile which contains the specimen. To avoid wall friction the drain is covered with a removable Neoprene® sheet. On one side a removable anchor is fixed, on the other side this anchor is movable and slides on three wheels. The motion of this anchor is registered by a high sensitive digital probe. |
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Thin-Layer Shrinkage Laser Measurement System The Schleibinger Thin-Layer Shrinkage Laser Measurement System is designed for measuring the shrinkage of thin layers of compounds.Some building materials like self-levelling flooring compounds or plasters are applied in thin layers. These fast setting mortars set and harden within a couple of hours and subsequent drying of such a thin layer is generally terminated after the first day. In order to investigate the dynamics of early shrinkage and expansion a special set-up consisting of two laser units horizontally aligned are employed. This set-up allows investigation of the different formulation parameters and their influences on the different stages of shrinkage and expansion, namely the plastic shrinkage, setting expansion and drying shrinkage. The shrinkage/expansion behaviour is strongly related to both, external (climate) and internal (formulation) factors. With respect to the latter, begin, intensity and duration of setting are key to the overall shrinkage/expansion behaviour. With building
materials applied in thin layers shrinkages one of the major issues
because of two reasons: |
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