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Insights in thixotropic concrete pumping by a Poiseuille

An exact solution for laminar, unidirectional flow of

Insights in thixotropic concrete pumping by a Poiseuille flow extension We therefore extended Poiseuille flow for thixotropic concretes and reformulated it in a dimensionless form to gain

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3D Concrete Printing: A Systematic Review of Rheology, Mix

Concrete used in 3D printing is passed through the stages of pumping, extrusion through the nozzle, and accurate deposition in the successive layers to achieve a three-dimensional object, as shown in Figure 1. Extruded concrete supports self-weight and retains its shape without the use of formwork and bonds with the subsequent layers [3,4,5

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Research Explorer - Publications of Geert De Schutter

Insights in thixotropic concrete pumping by a Poiseuille flow extension. Fresh concrete pumping arrest investigation for thixotropy by a CFD modelling apporach. Pumping of fresh concrete : insights and challenges. Geert De Schutter Dimitri Feys.

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Thixotropic structural build-up of cement-based materials

Sep 01, 2021 · Insights in thixotropic concrete pumping by a Poiseuille flow extension Appl. Rheol., 30 ( 1 ) ( 2020 ), pp. 77 - 101 CrossRef View Record in Scopus Google Scholar

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Research Explorer - Publications of Geert De Schutter

Insights in thixotropic concrete pumping by a Poiseuille flow extension. Fresh concrete pumping arrest investigation for thixotropy by a CFD modelling apporach. Pumping of fresh concrete : insights and challenges. Geert De Schutter Dimitri Feys.

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Materials | Free Full-Text | Numerical Reliability Study

Rheological quantification is important in many industries, the concrete industry in particular, e.g., pumping, form filling, etc. Instead of performing expensive and time-consuming experiments, numerical simulations are a powerful means in view of rheological assessment. However, due to the unclear numerical reliability and the uncertainty of rheological input data, it is important for the

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Research Explorer - Publications of Robin De Schryver

Insights in thixotropic concrete pumping by a Poiseuille flow extension. application for concrete pumping. Robin De Schryver Khadija El Cheikh Karel Lesage Geert De Schutter. C1 Conference. 2018. 2017. Numerical approach for thixotropic behaviour of concrete : current status.

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Thixotropic structural build-up of cement-based materials

Sep 01, 2021 · Insights in thixotropic concrete pumping by a Poiseuille flow extension Appl. Rheol., 30 ( 1 ) ( 2020 ), pp. 77 - 101 CrossRef View Record in Scopus Google Scholar

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A review of drag reduction by additives in curved pipes

1 INTRODUCTION. Locations of petroleum wells are sometimes several kilometers from processing plants. There is therefore need to transport single and multi‐phase fluids through pipes, including pipe fittings such as bends, to processing plants and for separation. 1-3 A large percentage of the energy cost in petroleum production and transport results from pressure losses.

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Research Explorer - Publications of Robin De Schryver

Insights in thixotropic concrete pumping by a Poiseuille flow extension. application for concrete pumping. Robin De Schryver Khadija El Cheikh Karel Lesage Geert De Schutter. C1 Conference. 2018. 2017. Numerical approach for thixotropic behaviour of concrete : current status.

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RILEM - Publications

concrete pump test on a construction site, specifically focusing on the risk of thixotropy. Fresh concrete has been pumped in a horizontal closed-loop pumping pipe with a total length of 600 meter. In steady-state pumping conditions, the pumping operation was very successful, and in agreement with the expectations. However, the thixotropic effects,

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Rheological and pumping behaviour of 3D printable

Jan 01, 2021 · One of the assumptions of Poiseuille flow, it can undergo a thixotropic structural build-up which can increase the failure height of printed elements. This effect of the structural build-up cannot be captured from dynamic yield stress measurements. Pumping of fresh concrete: insights and challenges. RILEM Tech. Lett., 1 (2016), p. 76

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Materials | Free Full-Text | Effect of Admixtures on the

When cement-based materials are transported at a construction site, they undergo high pressures during the pumping process. The rheological properties of the materials under such high pressures are unknown, and estimating the workability of the materials after pumping is a complex problem. Among various influential factors on the rheology of concrete, this study investigated the effect of

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(PDF) Insights in thixotropic concrete pumping by a

Insights in thixotropic concrete pumping by a Poiseuille flow extension | 83 advectiv e time scale, although it is usually de ned for non- yield stress uids by the viscosity and a velocity propor -

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Journal | Applied Rheology

To describe uncured rubber melt flow, a modified Phan–Thien–Tanner (PTT) model was proposed to characterize the rheological behavior and a viscoelastic one-dimensional flow theory was established in terms of incompressible fluid.

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The influence of sulfate availability on rheology of fresh

Insights in thixotropic concrete pumping by a Poiseuille flow extension. Rheology of polysulfone-N-methylpyrrolidone solutions used in the technology of lithium-ion batteries. Rheological behavior of a bentonite mud. Correlating Coating Quality of Coverage with Rheology for Mica-Based Paints. See more

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DNC Access Full Text - L&H Scientific Publishing

Uniqueness and Decay of Weak Solutions to Phase-Lock Equations. pp. 31-41 | DOI: 10.5890/DNC.2021.03.003. Jishan Fan, Gen Nakamura, and Mei-Qin Zhan. Abstract | Access Full Text. Abstract. In this paper, we prove the uniqueness of weak solutions ( f, Q) ( f, Q) to the phase-lock equations with f 0 f 0 ∈ L 2 L 2 and Q 0 Q 0 ∈ L 3 L 3 when

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Insights in thixotropic concrete pumping by a Poiseuille

Jan 01, 2020 · Insights in thixotropic concrete pumping by a Poiseuille flow extension Rheology of polysulfone-N-methylpyrrolidone solutions used in the technology of …

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(PDF) [C. Venkataramaiah] Geotechnical Engineering(BookFi

Academia.edu is a platform for academics to share research papers.

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Fresh Concrete Pumping Arrest Investigation for Thixotropy

Aug 25, 2019 · Despite some unresolved numerical instabilities, the numerical framework allows to estimate pumping pressure peaks after resting time. The results evaluate a thixotropy model, which is generally applicable for less thixotropic SCC's. It is clear that flow re-initiation after rest in concrete pumping is poorly understood.

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