Issue 15 (3) 2016 pp. 195-208
Jan Kempiński, Robert Świerzko
DETERMINATION OF RHEOLOGICAL PARAMETERS OF LIME PASTES WITH CONSIDERATION OF THE WALL-SLIP EFFECT
Keywords: lime pastes, rotational viscometer, rheological parameters, Herschel-Bulkley model, wall-slip effect
The rheological measurements of the lime pastes were performed with use of the coaxial rotational viscometer Haake Viscotester Vt550, with different sensor systems. Obtained pseudo-curves of flow τ(γp) indicated a non-Newtonian behavior of lime pastes, which required the correction to the actual flow curves τ (γ). The corrected flow curves, for the same water-to-lime ratios W/L, but measured with different sensor systems do not coincide with each other, throughout the range of concentrations tested. This indicates the occurrence of the wall-slip effect. Therefore correction of flow curves was performed, according to Kiljański method , to obtain a one flow curve for two different sensor systems. The approximation of flow curves was carried out with use of the tri-parametric Herschel–Bulkley model. An evaluation of the error in the determination of rheological parameters without taking into account the wall-slip effect was performed.
|MLA||Kempiński, Jan, and Robert Świerzko. "DETERMINATION OF RHEOLOGICAL PARAMETERS OF LIME PASTES WITH CONSIDERATION OF THE WALL-SLIP EFFECT." Acta Sci.Pol. Form. Cir. 15.3 (2016): 195-208. http://dx.doi.org/10.15576/ASP.FC/2016.15.3.195|
|APA||(2016). . Acta Sci.Pol. Form. Cir. 15 (3), 195-208 http://dx.doi.org/10.15576/ASP.FC/2016.15.3.195|
|ISO 690||KEMPIńSKI, Jan, ŚWIERZKO, Robert. DETERMINATION OF RHEOLOGICAL PARAMETERS OF LIME PASTES WITH CONSIDERATION OF THE WALL-SLIP EFFECT. Acta Sci.Pol. Form. Cir., 2016, 15.3: 195-208. http://dx.doi.org/10.15576/ASP.FC/2016.15.3.195|