Abstract Carboxymethylcellulose (CMC) and ultrasound gel (USG) seem to be suitable clear model fluids substitute real ultra-high-performance concretes (UHPCs), enabling experimental monitoring of events occurring within these mixtures at similar flow behaviour. USG is eligible for UHPC with significant yield stress. CMC having a concentration better UHPCs exhibiting indistinct The rheological b...

An electromagnetic analysis is presented for experiments with strong permanent disc magnets. The analysis is based on the well known experiment that demonstrates the effect of circulating eddy currents by dropping a strong magnet through a vertically placed metal cylinder and observing how the magnet is slowly falling through the cylinder with a constant velocity. This experiment is quite spect...

In this study, a powder rheometer was used to measure flow characteristics of two pharmaceutical model powders. Precise measurements were obtained for one of the model powders whereas the results were less precise for the second powder. In conclusion, further work is needed to increase the mechanistic understanding of powder rheological measurements. INTRODUCTION Modern pharmaceuticals are prim...

The study focuses on the rheological behavior of a fluid based viscoelastic surfactant (Surfogel grade D, type 70-100, produced by JSC "Polyex") in wide range strain rates. This is used for hydraulic fracturing technology as proppant-carrying and proppant-retaining order to enhance oil recovery, including those with hard-to-recover gas reserves. Quasi-static experiments determine values dynamic...