Rheological behaviour of geopolymer mortars and concretes, Thomas Heiermann, Stephan Uebachs, Brameshuber + Uebachs Ingenieure GmbH, Aachen, Germany
We first tested a geoplymer or alkali activated mortar in the Viskomat NT. The mortar (fishbone) probe and the vane probe have been used.
Testing geopolymer mortar with the Viskomat NT in the lab.
Shear rate over time
Torque over Time, red curve vane probe, other curves fishbone probe.
Flowcurve first slope, minute 0 ... 1
Flowcurve first downgoing slope minute 2 ... 3
Flowcurve last downgoing slope minute 5 ... 6
Following tests heve been made:
Test in the concrete lab in the foreground Dr. Stephan Uebachs, ibu.
eBT-V in the foreground setup V-mode
eBT-V speed profile screen shot from the App
Speed profile for the eBT-V rheometer in the V mode
Flowcurve from the eBT-V App
Same flowcurve as above, eBT-V, the downgoing slope is evaluated
SLIPER measurment
SLIPER flow-rate vs. max. pressure for different strokes. Screenshot from the App.