Techniques for determining rheological properties of a fluid include actuating a resonator disposed in a volume that contains a fluid sample to operate the resonator in the fluid sample at a predetermined actuation scheme; measuring at least one characteristic of the resonator based on the operation of the resonator in the fluid sample; comparing the at least one measured characteristic to a rheological model that associates characteristics of the fluid sample to one or more rheological properties; and based on the comparison, determining one or more rheological properties of the fluid sample.

A time-varying detecting device and method for concrete rheological parameters, in which the double-covered cylinder has top and bottom covers (11, 12), both of which can be freely opened, is configured to contain a concrete sample, and a lifting frame includes a pair of vertical supports (21) extending in parallel with each other. The double-covered cylindrical container is held between the pair of vertical supports (21) by means of connecting members (30) in such a manner that it can be flipped 180? about a straight line along which the connecting members (30) extend under the action of an external force. To perform a test, the top cover (11) is opened and a concrete mix is filled in, followed by detecting initial rheological parameters. The top cover (11) is closed, and the concrete mix is left for a predetermined period of time. The double-covered cylindrical container is lifted to a predetermined height by raising the connecting members (30), flipped 180? and lowered back onto the floor. The bottom cover (12) is opened, and the concrete mix is re-mixed and homogenized, followed by finally detecting the time-varying rheological parameters of the concrete mix.

Apparatuses and methods are disclosed for the analysing of non-Newtonian fluids and determining parameters to characterise the relationship between shear stresses and shear rates, i.e. the parameters of one or more rheological models of viscosity. A plurality of viscosity measurements are made in a fluid using one or more vibratory transducers operating at a plurality of frequencies. Parameters for the fluid are determined based on the measured viscosity values and the frequencies of vibration at which the viscosity measurements were obtained.

A yield stress measurement device and corresponding methods may use a two-capillary tube setup that measures the amount of a fluid drawn into each capillary and correlates that to the yield stress of the fluid. The devices and corresponding methods may be particularly useful for in-the-field measurements at well sites during drilling operations or other wellbore operations. An exemplary yield stress measurement apparatus may include a first capillary tube and a second capillary tube substantially perpendicular to each other, each capillary tube having two open ends and a length extending therebetween; a first and second length scale coupled to the lengths of the first and second capillary tubes, respectively; and a first fluid area and a second fluid area at one of the open ends of each of the first and second capillary tubes, respectively.

An apparatus for measuring rheological parameters of a multi-phase fluid is provided. The apparatus includes a static chamber containing a multi-phase fluid having at least a first phase and a second phase. The apparatus also includes a rotor member submersed in the multiphase fluid in the static chamber. The rotor member includes a first set of threads formed on a first portion of the rotor member submersed in the first phase of the multi-phase fluid and a second set of threads formed on a second portion of the rotor member submersed in the second phase of the multi-phase fluid.

Systems and methods for determining the yield stress of a non-Newtonian fluid in real time are provided. A pressure loss and/or liquid rise technique, an ultrasonic technique, and/or a penetrometer technique can be used to determine the yield stress of a non-Newtonian fluid. The ultrasonic technique can include a longitudinal wave approach and/or a shear wave approach. The methods and systems are non-invasive and only require slight modifications to the piping containing the non-Newtonian fluid in order to measure the yield stress.

Systems and methods for determining the yield stress of a non-Newtonian fluid in real time are provided. A pressure loss and/or liquid rise technique, an ultrasonic technique, and/or a penetrometer technique can be used to determine the yield stress of a non-Newtonian fluid. The ultrasonic technique can include a longitudinal wave approach and/or a shear wave approach. The methods and systems are non-invasive and only require slight modifications to the piping containing the non-Newtonian fluid in order to measure the yield stress.

With increasing demands for cost reductions, profitability, tighter construction deadlines and potential liabilities construction companies, raw material suppliers, infrastructure owners, etc. are seeking cost effective systems, method and processes relating to the quality control of said construction materials. Accordingly processes, systems and methods are disclosed relating to concrete and other construction materials such as automatic slump measurement, automatic load measurement, artificial intelligencemachine learning optimization of material mixes, and automatic ingestion of data from unstructured documents to provide data to artificial intelligencemachine learning processes.

A method for characterizing thixotropic characteristics of submarine landslide mass material, including: performing steady shear on landslide mass material, and determining solid-fluid transition boundary according to variation of yield stress value in yield stress test; performing conversions between shear speed and shear rate and between shear torque and shear stress according to variations of apparent viscosity-shear speed and shear torque-shear speed of landslide mass material at different shear times in apparent viscosity test to obtain variations of the apparent viscosity and the shear stress at different shear rates to construct conventional rheological model; constructing thixotropy characterization equation according to variations of the shear stress and the apparent viscosity with the shear time in the thixotropy test; and constructing rheological model for characterizing the thixotropic characteristics of the submarine landslide mass material according to the solid-fluid transition boundary, the conventional rheological model, and the thixotropy characterization equation.

A method for measuring the properties of an anode slurry, including preparing a kneaded anode slurry, measuring an insertion length of a measuring bar, and calculating a kneading energy of the anode slurry. Specifically, the method being capable of evaluating the degree of adsorption among a conductive material, an active material, and carboxy methyl cellulose (CMC) in a kneaded state of the anode slurry.