Study on a Method of Obtaining Rheological Coefficients of High-Flow Concrete From Slump Flow Test

Kokado, Takeshi; Miyagawa, Toyoaki

doi:10.2208/jscej.1999.634_113

Cited by 18 publications

(9 citation statements)

References 9 publications

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“…In fact, the equation from their experimental results does not fit with the results of this study and the values of yield stress are 10 4 times too high for our data. Similarly, the equation used by Kokado and Miyagawa ( 35 ), and the same modified to account for the surface tension effect ( 14 ), still do not properly fit the observations of this investigation. Both models are displayed along with the experimental data and its power law fit in Figure 12.…”

Section: Resultscontrasting

confidence: 67%

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Testing Procedures on Materials to Formulate the Ink for 3D Printing

Charrier

Ouellet-Plamondon

2020

Transportation Research Record: Journal of the Transportation R

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Three-dimensional (3D) printing has been used in various fields to tackle applications difficult for conventional manufacturing. To realize the full potential of this technology in the transportation sector, it is imperative to identify suitable tests and mixtures for printing “inks” made of mortar. In this study, several conventional and non-conventional tests on mortars and cement pastes were conducted. This work highlights the correlation between the results of slump test and the deformation test that indicates the comportment of the mixture under a stack of printed layers. Moreover, a strong connection between yield stress and mini-slump is observed, demonstrating a simplification of the testing procedure, and a link between the mortar and the cement paste is developed. In the printing ink design phase, this association enables the prediction of flowability. The yield stress and the final radius of the mini-slump tests were very well correlated for the admixture tested. The use of the mini-slump test simplifies the testing procedure and allows for quicker formulations of admixtures in the printing ink.

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Section: Resultscontrasting

confidence: 67%

“…Yield stress of the paste variation with the final radius of the mini-slump test for the models of Roussel et al ( 14 ) and Kokado and Miyagawa ( 35 ), alongside experimental data.…”

Section: Resultsmentioning

confidence: 99%

Testing Procedures on Materials to Formulate the Ink for 3D Printing

Charrier

Ouellet-Plamondon

2020

Transportation Research Record: Journal of the Transportation R

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“…17 Therefore, in this study, mortar rheological constants were investigated as an index to evaluate the viscosity. The rheological constants were obtained using a steel ball pull-up test, [18][19][20] which can be applied to highly viscous mortar.…”

Section: Overviewmentioning

confidence: 99%

“…The steel ball sunk in the viscous fluid was pulled upward, and the rheological constant was estimated from the drag force acting on the steel ball. The test device was manufactured according on References 19, 20. An overview of the device is presented in Figure 24.…”

Section: Measurement Of Rheological Constantsmentioning

confidence: 99%

Prediction of effective vibration condition under air void reduction using mortar rheological constant

Kisaku

Yoshida

Muto³

et al. 2022

Engineering Reports

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Air voids remaining on the concrete surface are detrimental to the durability. Surface voids also affect the esthetics of concrete structures. In this study, the method of reducing the surface voids caused by entrapped air of fresh concrete was verified using 122 cases of vibration box tests with different materials, mix proportions, vibration frequencies, and amplitudes. The surface void area ratio (SVAR) decreased when the acceleration of the vibration box was increased regardless of the type of concrete. The relationship between SVAR and acceleration can be expressed through a power function. However, a segregation was observed in medium‐fluidity concrete when the acceleration exceeded 4.0 Gal (hereinafter referred to as G). In addition, the SVAR correlated with the mortar rheological constant was measured using a steel ball pull‐up test. An equation using mortar rheological constants, which can be estimated using a concrete slump, was proposed to predict the SVAR‐acceleration relationship.

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“…2 Prof., School of Eng., Faculty of Eng., University of the Ryukyus, Dr. Eng. 3 Concrete Research Laboratory, FLOWRIC Co., Ltd., Dr. Eng. 4 Associate Prof., School of Eng., Faculty of Eng., University of the Ryukyus, Dr. Eng.…”

mentioning

confidence: 99%

Rheological Constants Measurement of Mortar That Fluidity Is Evaluated by Slump and Analysis of Slump and Slump Flow of Mortar by MPS Method

Hirano

Yamada

Nishi

et al. 2020

Nihon Kenchiku Gakkai Kozokei Ronbunshu

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In this study, two rheology tests were conducted to obtain the rheological constants of mortar. The first was sphere pull-up test, the second was the measurement by using rotational vane viscometer. The rheological constants were obtained by approximating flow curve of each test by Bingham model. Using them, the mini slump test was analytically reproduced by Moving Particle Semi-implicit (MPS) method.The analysis results using the rheological constants of sphere pull-up test agreed with the flow spread and slump shape. Therefore, the rheological constants obtained by the experiment are effective for the MPS analysis.

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Study on a Method of Obtaining Rheological Coefficients of High-Flow Concrete From Slump Flow Test

Cited by 18 publications

References 9 publications

Testing Procedures on Materials to Formulate the Ink for 3D Printing

Testing Procedures on Materials to Formulate the Ink for 3D Printing

Prediction of effective vibration condition under air void reduction using mortar rheological constant

Rheological Constants Measurement of Mortar That Fluidity Is Evaluated by Slump and Analysis of Slump and Slump Flow of Mortar by MPS Method

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