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high torque vane rheometer for concrete principle

high torque vane rheometer for concrete principle

High torque vane rheometer for concrete: principle and ...

with a high torque vane rheometer, in order to show the relevance of this device as a concrete rheometer, in comparison with the slump test. The design of the high torque vane rheometer is inspired from the IBB and ICAR rheometers [22, 25, 26] and consists in the

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High torque vane rheometer for concrete: principle and ...

ties of fresh concrete, and the yield stress in par-ticular [16, 17]. The principle of these rheometers Abstract: A high torque vane rheometer is used to measure the yields stress of cement-based materials. It is shown that this apparatus is suitable for the evaluation of the yield stress of various concretes and mortars in the fresh state

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(PDF) High torque vane rheometer for concrete: principle ...

ExperimentsIn this section we first present the high torque vane rheometer, the principle of the yield stress measurement of concretes and mortars realized with this apparatus, and the procedure to compute the vane shear flow data. The principle of slump measurement made with the ASTM Abrams cone is

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[PDF] High Torque Vane Rheometer for Concrete: Principle ...

Abstract A high torque vane rheometer is used to measure the yields stress of cement-based materials. It is shown that this apparatus is suitable for the evaluation of the yield stress of various concretes and mortars in the fresh state in comparison with slump tests realized with ASTM Abrams cone. Then, the rheological properties (yield stress and shear flow behaviour) of a homogeneous kaolin ...

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High torque vane rheometer for concrete: principle ... - CORE

Abstract. International audienceA high torque vane rheometer is used to measure the yield stress of cement-based materials. It is shown that this apparatus is suitable for the evaluation of the yield stress of various concretes and mortars in the fresh state in comparison

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Torque–speed relationship in a concrete rheometer with ...

Aug 01, 2011  However, the mathematical relationship between torque and speed during shearing of concrete in a vane rheometer was not attempted. The objective of the present study is to derive torque–speed relationship in a vane rheometer for concrete taking into account the resistance offered by concrete in the annulus, top and bottom of the vane. 2.

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Rheometer for mortar and concrete - CAD Instruments

Overview - Principle "Big brother" of RheoCAD420, the new rheometer RheoCAD500 is a rheometer developed specifically for building materials characterization, such as cement, mortar and fresh concrete. Its principle is based on the measurement of the torque developed in response to the controlled rotation of a measuring device in a bowl.

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(PDF) Rheology of Cocrete and Rheometers IJSTE ...

The apparatus consists of a series of vanes that is lowered in the bucket containing concrete, then the vane rotates at a certain speed and the torque is measured. Such readings are carried out for a number of series and then the graph is plotted for torque versus speed. This type of Rheometer comes with various types of impeller sections.

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A new vane rheometer for fresh mortar: development and ...

[18] Estellé P, Lanos C: High torque vane rheometer for con-crete: principle and validation from rheological mea-surements. Appl. Rheol. 22 (2012) 12881. [19] Estellé P, Lanos C, Perrot A, Amziane S: Processing the vane shear flow data from Couette analogy. Appl. Rhe-ol. 18 (2008) 34–37. [20]Estellé P, Lanos C, Perrot A: Processing the ...

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Optimization of Geometrical Features of a Vane Concrete ...

Jun 09, 2021  If the speed is too high, there are chances of particle migration. Further, resolution of torque and speed are also important parameters in rheometer design. In connection to the torque requirement of a concrete rheometer, an expression for torque is proposed by for vane-type rheometer.

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(PDF) Rheology of Cocrete and Rheometers IJSTE ...

The apparatus consists of a series of vanes that is lowered in the bucket containing concrete, then the vane rotates at a certain speed and the torque is measured. Such readings are carried out for a number of series and then the graph is plotted for torque versus speed. This type of Rheometer comes with various types of impeller sections.

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Schleibinger Testing Systems - Viskomat XL - Rheometer for ...

Nov 30, 2020  The operation principle of the viskomat XL is near the same as for the viskomat NT. So a mixer formed probe is measuring the torque, and the specimen vessel is rotating. An additional scraper is cleaning the wall of the vessel. Also a Vane probe for a max. grain size of 20 mm is available. Very dynamic speed range

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Rheometer for mortar and concrete - CAD Instruments

Overview - Principle "Big brother" of RheoCAD420, the new rheometer RheoCAD500 is a rheometer developed specifically for building materials characterization, such as cement, mortar and fresh concrete. Its principle is based on the measurement of the torque developed in response to the controlled rotation of a measuring device in a bowl.

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Schleibinger Testing Systems - eBT-V - mobile Rheometer ...

Jul 20, 2020  The Vane probe is rotating and the torque on the Vane probe is measured. The speed profile is freely programmable. ... INFLUENCE OF MORTAR VOLUME ON THE RHEOLOGICAL PROPERTIES OF FRESH HIGH PERFORMANCE CONCRETE, BFT 10/2008. ... und B. Middendorf, „A simulation-based approach to evaluate objective material parameters from concrete rheometer ...

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Cement Concrete Composites

a vane rheometer to measure the maximum value of the torque of ... torque of the concrete at a fixed rotational speed (0.025 rev/s) and establishes the relationship between the slump, slump flow and maximum torque of fresh concrete. In this study a wide scatter ... high-viscosity underwater concrete (HVUWC). The commercial

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Applied Rheology: Publications

High torque vane rheometer for concrete: principle and vaLi.Ation from rheological measurements Appl. Rheol. 22:1 (2012) 12881 (7 pages) A high torque vane rheometer is used to measure the yields stress of cement-based materials. It is shown that this apparatus is suitable for the evaluation of the yield stress of various concretes and mortars ...

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Optimization of the vane geometry SpringerLink

Mar 08, 2014  Estelle P, Lanos C (2012) High torque vane rheometer for concrete: principle and validation from rheological measurements. Appl Rheol 22:12, 881. Google Scholar Fisher DT, Clayton SA, Boger DV, Scales PJ (2007) The bucket rheometer for shear stress-shear rate measurement of industrial suspensions. J Rheol 51:821–831

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Applied Rheology: Publications - ETH Z

High torque vane rheometer for concrete: principle and validation from rheological measurements Appl. Rheol. 22:1 (2012) 12881 (7 pages) Victor Chernov, Benveniste Natan A simplified model for the evaluation of the rheological properties of a suspension of solids in a power-law fluid Appl. Rheol. 22:1 (2012) 15163 (10 pages)

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108 Relating Fresh Concrete Viscosity Measurements from ...

• A coaxial rheometer (BML1 [8]) with a high range water reducer admixture (HRWRA) (Table 1). • A vane rheometer (IBB [9]) in which three concrete mixes were prepared with different air contents (Table 1) and different coarse aggregate concentra-tions. • A computer simulation (see description below) in

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Rheometer - an overview ScienceDirect Topics

C.F. Ferraris, N.S. Martys, in Understanding the Rheology of Concrete, 2012 3.2.4 Summary of the concrete rheometer descriptions. All the rheometers described above have one principle in common: the resistance of the material to an applied shear rate is measured. The design approaches are varied and, in most cases, an analytical solution to calculate the material properties into fundamental ...

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EP0125774A2 - Method and apparatus for testing ready-mixed ...

Concrete with a known cement mixing ratio is sampled and the aggregate is screened out. A fixed quantity of the resulting mortar is weighed, stirred with waterand allowed to stand. The mortar sample is then immersed in water and again weighed. A linear relationship between the water-to-cement ratio of the concrete and the ratio of the weight of the mortar under water to that out of waterthen ...

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Developments of the two-point workability test for high ...

An improved version of the Tattersall two-point workability apparatus has been developed for the study of the rheology of high-performance concrete mixes. The improvements include a more compact arrangement of motor, impeller and bowl and the computer logging of the speed/torque data so that the flow curve can be obtained in a continuous sweep of about 30 s.

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Viskomat XL – Rheometer for Mortar and Fresh Concrete ...

As an option an oscillating or a logarithmic mode is available. High Torque Range. The Viskomat XL has a torque range from 0..300 Ncm with a resolution of 0.05 Ncm and accuracy better than 0.2 Ncm. Optionally the rheometer can be supplied with a sensor taking the torque range up to 1000 Ncm and accuracy to 0.8 Ncm. Temperature control.

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Cement Concrete Composites

a vane rheometer to measure the maximum value of the torque of ... torque of the concrete at a fixed rotational speed (0.025 rev/s) and establishes the relationship between the slump, slump flow and maximum torque of fresh concrete. In this study a wide scatter ... high-viscosity underwater concrete (HVUWC). The commercial

get price

108 Relating Fresh Concrete Viscosity Measurements from ...

• A coaxial rheometer (BML1 [8]) with a high range water reducer admixture (HRWRA) (Table 1). • A vane rheometer (IBB [9]) in which three concrete mixes were prepared with different air contents (Table 1) and different coarse aggregate concentra-tions. • A computer simulation (see description below) in

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Center for Infrastructure Engineering Studies Missouri ST

The ICAR rheometer is a portable concrete rheometer, also based on the principle of the coaxial cylinders. The inner cylinder is equipped with a vane and the rheometer can accommodate concretes with a maximum aggregate size of 25 mm. The ICAR rheometer will be transformed into a tribometer by replacing the vane by a smooth cylinder.

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Applied Rheology: Publications

High torque vane rheometer for concRe.E: principle and validation from rheological measuRe.Ents Appl. Rheol. 22:1 (2012) 12881 (7 pages) A high torque vane rheometer is used to measure the yields stress of cement-based materials.

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Developments of the two-point workability test for high ...

An improved version of the Tattersall two-point workability apparatus has been developed for the study of the rheology of high-performance concrete mixes. The improvements include a more compact arrangement of motor, impeller and bowl and the computer logging of the speed/torque data so that the flow curve can be obtained in a continuous sweep of about 30 s.

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Rheological and mechanical performance evaluation of high ...

- R. Zaitri, M. Bederina, T. Bouziani, Z. Makhloufi, M. Hadjoudja, Development of high performances concrete based on the addition of grinded dune sand and limestone rock using the mixture design modelling approach.

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BROOKFIELD Viscometer Rheometer – Testing, Inspection ...

Krebs Viscometer Oil Fluids Brookfield Part # KU61, KU73, KU87, KU99, KU106. viscosity calculator oil, astm d2270, astm d341, viscosity calculator water, how does a rotational viscometer work, rotational viscometer pdf, how does a viscometer work, types of viscometer, viscometer principle, ostwald viscometer, difference between viscometer and ...

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20 Relating_Fresh_Concrete_Viscosity_Measurements_fro.pdf ...

2. Theoretical Approach Most rotational rheometers are based on the principle that the material is stirred at a controlled speed and the resulting torque is measured. In the case of a Newtonian fluid, the viscosity is defined as the ratio between the stress and the shear rate [7]. Concrete and mortar are generally accepted to be Bingham fluids [6]. In such materials, the plastic viscosity is ...

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Betocarb - Document PDF

Jul 26, 2015  L'influence des fillers sur l'ouvrabilité des bétons autoplaçants 3 0 10 20 30 40 50 60 70 80 90 100 0,01 0,1 1 10 100 tamis (mm) passants cumulés(%) Influence des fillers sur l'ouvrabilité des bétons . Notices gratuites de Betocarb PDF

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Viskomat XL, Mortar, Cement and Fresh Concrete Rheometer ...

Qualitest viskomat XL is a Rheometer for Mortar and Fresh Concrete up to 8 and more mm Grain Size. It fills the gap between the viskomat NT for mortar and paste with a specimen volume of 360 ml and the con¬crete rheometer BT2 with a sam¬ple vol¬ume of 20l. The operation principle of the viskomat XL is near the same as for the viskomat NT.

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Avaliação da utilização de aditivo biopolimérico a base de ...

Os resultados obtidos também apontam a influência do aditivo MOFI na resistência mecânica, com incremento de 23% da resistência a compressão axial simples para a

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SciELO - Brasil - Análise comparativa da tensão limite de ...

Para o caso das pastas de cimento, o ensaio reométrico é realizado, frequentemente, pelo reômetro tipo cilindros coaxiais ou placa-placa. As argamassas podem ser avaliadas por diferentes tipos de geometria, podendo ser ensaiadas com o sistema Vane, quando observadas limitações das outras geometrias frente ao sistema particulado mais elevado desse material [10 [10] OLIVEIRA, C. O ...

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Effect of visco-plastic and shear-thickening/thinning ...

Mar 03, 2021  The authors would like to acknowledge the financial support from the National Key RD Program of China “Key materials and preparation technology for highly crack-resistant ready-mixed concrete” (No. 2017YFB0310100) and the National Natural Science Foundation of

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