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Showing 1 to 20 of 34 for “"rheological parameters"”.
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Rheological investigation of three South African gold mine pulps
… which enables the user to determine the rheological parameters of a fast settling slurry using conventional viscometric measuring equipment. The effect of concentration, temperature and pH on these parameters is investigated. The results agree with those obtained by previous workers using …
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Concrete Rheology
… and the addition of a superplasticizer on the rheological parameters of yield stress, plastic viscosity, and apparent viscosity. The objective of this work was not only to measure the effects on rheology by the variables, but also to predict some of the same measured rheological parameters. The …
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On the Rheology of Soft Cellular Materials, An Experimental Investigation of the Microstructure and Rheology of a Novel Tissue-Mimic Material
… the effect of using different functionalisation parameters, and of varying the sample temperature, on the samples’ rheology as measured in creep tests. These experiments demonstrate that the com- pliance of samples varies widely with the affinity and avidity of functionalisation molecules on the …
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Cheddar cheese : Its texture, chemical composition and rheological properties.
… pH level and salt content were observed. The rheological properties were measured using three tests performed on an Instron Universal Testing Machine - a compression test, a cutting test and a stress relaxation test - and, where appropriate, were reported in terms of true stress and true …
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Soy protein-xanthan gum interaction:stability and rheology
… of sodium chloride, protein type, and pH on the rheological parameters of model solutions were also examined. Higher sodium chloride levels yielded greater viscosity synergisms. Those solutions made.with intact protein were generally higher in apparent viscosity than similar solutions made with …
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On-line rheology, flow simulation and system-based modelling of twin-screw extrusion processing of corn meal
Rheological characterization of corn meal formulations was carried out using a twin screw extruder as a rheometer. On-line rheometrical techniques used for rheological characterization of non-food polymers were modified to make them adaptable to food materials extruded in a twin-screw extruder. The …
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Estudos reológicos de cimentos asfálticos
This work proposes to establish rheological parameters for petroleum asphalt cements, representatives of their performance as paving material. An exhaustive survey of studies already done in this subject, was made in order to prepare a state-of-art about asphalt cement rheology and its correlation …
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Cracking potential of short- and long-term aged binder with various levels of ABR
… presents an experimental evaluation of the rheological properties of binders from various sources to investigate the effects of aging and increasing asphalt binder replacement (ABR) levels. In addition to the standard Superpave grading parameters, the additional rheological parameters for …
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Rheological characteristics of solvent free nanofluids: Thermal transitions and reactive curing
… of the future. This work documents the basic rheological parameters, thermal transitions, and curing kinetics of various solvent-free nanofluids synthesized by Zhiming Qiu and Kejian Bian at the Coating Research Institute at Eastern Michigan University.</p>
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Correlating macroscopic rheological behaviour to microstructure of polymer flocculated Mature Fine Tailings (MFT)
… In this study, the microstructural and rheological parameters were utilized to understand the effect of processing conditions on the polymer flocculation of mature fine tailings (MFT). Laser scanning confocal microscope (LSCM) was used to capture 3-D images of sludge fabric and …
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Rheology of bubbly liquids containing a non-Newtonian continuous phase
… found in many real-world contexts and their bulk rheological behaviour is determined by the continuous phase rheology, the bubble phase properties and the interaction between the two phases. The majority of research concerning bubbly liquids has focussed on materials with a Newtonian continuous …
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The Effects of Aggregate Moisture Conditions in Rheological Behaviors of High-Workability Mortar Prepared with Fine Recycled-Concrete Aggregate
… rheometer was used in this study to measure the rheological behaviors of high-workability mortar (Self-Consolidating Concrete - SCC mortar). A mortar slump test and a mortar funnel test were also performed to evaluate the workability of SCC mortar. Fine recycled-concrete aggregate (FRCA) was used …
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Iniciação e propagação de fraturas induzidas por injeções em solos argilosos com canalículos: aplicação ao tratamento do solo residual de fundação da barragem de terra da UHE Balbina
… of the whole phenomena, known the involved parameters and their influence on the process. Experimental data obtained at Balbina applied to the theoretical solutions permitted to estimate the dimension of fractures and thus the area of influence of the grout per injected volume, so defining …
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Investigating Shear-induced Damage during Hydrogel Extrusion-based Manufacturing: Rheological Insights and Mechanophore Incorporation
… the printing system and the printing parameters influence the shear stresses generated, which in turn can change the final rheological properties. It is also shown that it is feasible to include a mechanically active molecule to respond to these shear stresses and indicate through a …
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Gravity, capillary and dilational wave mode resonance at a visco-elastic two-fluid interface
… of one wave mode on another. We obtained the rheological parameters for these experimental systems by the inverse method. We used the inverse method to construct the dispersion relation solution space corresponding to the experimental conditions. We used the diagnostic tools for root …
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Continuum modeling of polarizable systems
… wall boundary conditions and to determine key rheological parameters of the fluid. Extending the plane-flow analysis to the analogous cylindrical geometry, a regular perturbation scheme is used to solve the coupled ferrohydrodynamic problem of spin-up flow of ferrofluid in a uniform rotating …
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The blending and permeability of polymers for packaging applications
… explained by molecular interactions than by the rheological parameters. The blend slip factor has been improved however by compatibilizers and consequently the phase dispersion, which had little effect on the barrier properties of the blends and indeed the laminates were more effective water …
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Effect of Dispersion on Rheology and 3D Printing of Chitosan-Graphene-Titanium Dioxide Composites
… at 90 nm, 295 nm, and 5.6 μm. Non-Newtonian rheological parameters such as yield stress, complex viscosity, storage, and loss moduli were higher for the probe-sonicated CS-G-TiO2 composite ink than for the bath-sonicated CS-G-TiO2 composite ink. This increase is likely attributed to enhanced …
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Van Der Waals Interactions Based Rheological Analysis for Electrosterically Stabilized Nano-Sized Alpha Silicon Carbide-Lactobacillus Gg Dispersions
… based systems are presented and discussed. The rheological parameters including pH, zeta potential, shear rate, shear stress and viscosity that alter the dispersion mechanisms are also presented and discussed. The concurrence of the experimental analysis with the mathematical modeling is also …
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Rheological aspects of sickle cell anemia and related hemoglobinopathies
To evaluate the rheological behavior of certain hemoglobinopathies with respect to oxygen tension, the concept of optimum hematocrit was employed. The optimum hematocrit is defined as the hematocrit at which the erythrocyte flow rate is the greatest. It therefore represents the optimum oxygen …
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