Numerical simulation of concrete pumping process and Related Information

Numerical Simulation of the Construction Process of Long

Mar 05, 2021 · A numerical model for the construction process of long spiral CFG piles is established based on the coupled Eulerian–Lagrangian method. The construction process is divided into drilling process and concrete pouring process for modeling. The influence of long spiral CFG piles construction on saturated sand foundation is studied, and dynamic responses, changes of pore water pressure, and …

Numerical Study on Concrete Pumping Behavior via Local

The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems.

Numerical simulation of fresh concrete flow: insight and

Sep 23, 2019 · Recent developments in concrete technology are advancing into a scientific-based approach, where both experimental studies and numerical simulations are utilised to achieve an optimum mix design and an effective placement into formwork at the jobsite. Since the load carrying capacity and service life of concrete structures is fully dependent on the success of the placement process, …

From analytical methods to numerical simulations: A

Sep 01, 2021 · The following is a brief summary of selected numerical modelling works on the concrete pumping. The majority of the published research on numerical modelling of concrete pumping utilizes the Computational Fluid Dynamics (CFD) approach [18,102], in which concrete is modelled as one single or as multiple phases in a continuum. This means that the

Numerical simulation of concrete pumping process and

A numerical simulation has been conducted to study the solid–fluid multi-phase flow problem in concrete pumping process. The kinematics and trajectory of the discrete particles as well as the

Experimental-Computational Investigation of Elastic

height was 407 m, the pumping period of the concrete in the pump pipe was 28 min. The pumping outlet pressure was in the range of 18.6 MPa to 19.8 MPa. When the flow velocity of the pumping concrete was stable, the pump pressure was 19.3 MPa. The pumping water, paste and mortar were used to pre-wet the pipes in turn before

Numerical simulation of concrete pumping process and

Feb 01, 2012 · A numerical simulation based on CFD and discrete element method was conducted. The solid-fluid multiphase flow problem in concrete pumping progress was studied. A model for understanding the erosion severity on the wall was established. The maximum erosion was observed at 30°∼40° of the outer wall. The results have good agreements with those observed in actual case.

Numerical simulations of concrete processing: From

Sep 01, 2020 · Numerical simulations of fresh concrete flows and processing techniques have therefore been used in the past only for extremely specific (often research-based) cases or in the field of litigations, in which they allow for the a-posteriori assessment of the respective responsibilities of the actors involved in a given concrete processing activity.

Numerical Simulation of Marine Recycled Concrete Specimen

Based on ABAQUS, this article builds up a dispersion cracking model and carries out the numerical simulation of the influence of sea water erosion depth and intension upon marine recycled concrete specimen. Compared with stress-strain curve from the experiment, it can be easily found that the experimental results match well with that of simulation through the numerical simulation of uniaxial

Field experiments and numerical simulations of whirlpool

Dec 12, 2013 · A three-dimensional numerical model was used to simulate the dewatering process and the hydraulic conductivities were inversed using the pumping tests. Four operation schemes were simulated with the corrected numerical model, and the results show the drawdown for the possible working combinations of pumping wells.

[PDF] Numerical simulations of concrete processing: From

This review shows that the available numerical modelling tools are able to detect and predict various type of failures through the printing process, no matter if these happen at the scale of the nozzle, of one printed layer or of the entire object being printed. Abstract The concrete industry is facing new digital shaping processes that still have to be optimized and that require cement-based

[PDF] Numerical simulations of concrete processing: From

This review shows that the available numerical modelling tools are able to detect and predict various type of failures through the printing process, no matter if these happen at the scale of the nozzle, of one printed layer or of the entire object being printed. Abstract The concrete industry is facing new digital shaping processes that still have to be optimized and that require cement-based

MESHFREE VISCOELASTIC MODELING: TOWARD …

costly, numerical simulation properly validated with experiments ff a far less costly and more ffe alternative. To numerically model the behavior of concrete at fresh or solidified state, a viscoelastic constitutive law for both small-strain and finite-strain are introduced based on …

[PDF] NUMERICAL SIMULATION OF FRACTURE PROCESS OF CONCRETE

Corpus ID: 59569230. NUMERICAL SIMULATION OF FRACTURE PROCESS OF CONCRETE MODEL BY RIGID BODY SPRING METHOD @inproceedings{Nagai2002NUMERICALSO, title={NUMERICAL SIMULATION OF FRACTURE PROCESS OF CONCRETE MODEL BY RIGID BODY SPRING METHOD}, author={K. Nagai and Yasuhiko Sato and T. Ueda and Y. Kakuta}, year={2002} }

Experimental Study and Numerical Simulation on Failure

Experimental Study and Numerical Simulation on Failure Process of Reinforced Concrete Box Culvert. Yafeng Gong,1 Yulin Ma,1 Guojin Tan,1 Haipeng Bi,1 Yunze Pang,1 and Chen Ma2. 1Jilin University, College of Transportation, Changchun 130025, China. 2Jilin Traffic Planning and Design Institute, Changchun 130025, China.

Effect of lubrication layer on velocity profile of

Jan 22, 2015 · The rheology of concrete is predominant for the required pressures in a pumping pipe. However, more detailed information is required on the formation and the properties of the lubrication layer near the pipe surface, in order to be able to accurately predict the pressure-discharge relation. By means of experimental research in combination with advanced numerical simulations, the lubrication

Numerical simulation of formwork pressure while pumping

Numerical simulation of formwork pressure while pumping self-compacting concrete bottom-up. Serge Tichko, Jens Van De Maele, Niels Vanmassenhove, Numerical simulations of these formwork filling tests have also been performed for comparison with the experiments. During the filling process, the formwork pressures were measured close to the

(PDF) Numerical simulation of concrete pumping process and

Numerical simulation of concrete pumping process and investigation of wear mechanism of the piping wall

Numerical Simulation of Fracture Process of Three-Point

Taking into account the initial damage and the accumulation of damage of concrete, Mazars damage model was modified. Based on the modified Mazars damage model, combined with finite element software ANSYS, the fracture failure process of the three-point bending notched beam of concrete was simulated. The initiation load Pini and maximum load Pmax of the three-point bending beam were …

Numerical simulation of formwork pressure while pumping

Numerical simulation of formwork pressure while pumping self-compacting concrete bottom-up. Serge Tichko, Jens Van De Maele, Niels Vanmassenhove, Numerical simulations of these formwork filling tests have also been performed for comparison with the experiments. During the filling process, the formwork pressures were measured close to the