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Pumping of fresh concrete is of utmost importance for concrete practice. Required pumping pressures are typically estimated based on design charts. Fresh Concrete Pumping Arrest Investigation

Learn MoreUNDERSTANDING THE PUMPABILITY OF CONCRETE

Learn MoreThe contractor finished placing wet concrete at the second level of the parking garage for an approximate area of 18,000 ft. 2, i.e., ¾ of the entire second level in the east portion of the building. The concrete for the slab was placed by the pumping method. The volume of concrete pumped was approximately 500 yd3 with a total weight of

Learn MorePumping of fresh concrete is of utmost importance for concrete practice. Required pumping pressures are typically estimated based on design charts. However, with the increased use of chemical admixtures and the development of more flowable concrete mixtures, the …

Learn MoreFresh Concrete Pumping Arrest Investigation for Thixotropy by a CFD Modelling Approach Robin De Schryver (&), Khadija El Cheikh, Mert Y. Yardimci, Karel Lesage, and Geert De Schutter Magnel Laboratory for Concrete Research, Ghent University, Ghent, Belgium

Learn MoreJul 05, 2018 · Jul 05, 2018 · Background. Pumping is a quick and efficient technique to place concrete in formwork, and it is well-known that pumping can significantly change plastic concrete properties [1,2,3,4].Concrete pumping, typically performed utilizing a dual-piston pump, is an elaborate process that can be, for the sake of simplicity, divided into four distinct phases.

Learn MoreMar 22, 2021 · Mar 22, 2021 · 1. Introduction. In line with the continuous development of concrete construction technology, pumping has become an indispensable process in the construction of houses, roads, bridges, etc., .The pressure loss and pipe wear caused by fresh concrete during pumping have long been the focus of researchers' attention, .There are many factors affecting the wear mechanisms …

Learn MoreFresh Concrete Pumping Arrest Investigation 581 In CFD, Partial Differential Equations (PDE 's ( 2) & ( 3)) are typically obtained from physics.Discretecontrolvolumesareconsideredtowhichconservationlawsapply[ 19 ].

Learn Morecontent during pumping. Once the loss of air con-tent during pumping is established, acceptance limits at the point of delivery can be determined. ASCC concrete contractors prefer to test fresh concrete at the point of delivery and, when necessary, to perform comparative testing that determines the effect of placement method on slump and air

Learn MoreThe concrete pumping process is simulated by a CFD-DEM model. The relationship between structural parameters and pressure loss is investigated. Single-objective optimization was used for the investigation of pressure loss. The pressure loss of the optimized model is reduced by 5.45%.

Learn More"Fresh Concrete Pumping Arrest Investigation for Thixotropy by a CFD Modelling Apporach." In Rheology and Processing of Construction Materials, RheoCon 2019, SCC9, edited by V. Mechtcherine, K. Khayat, and E. Secrieru, 23:580–87.

Learn MoreMany practical aspects of processing fresh concrete depend on its rheology, such as the pumping of the material. It is known that a lubricating layer is formed in the process, which significantly reduces the pumping pressure. However, these phenomena can hardly be considered in the usual rheological …

Learn MoreThe contractor finished placing wet concrete at the second level of the parking garage for an approximate area of 18,000 ft. 2, i.e., ¾ of the entire second level in the east portion of the building. The concrete for the slab was placed by the pumping method. The volume of concrete pumped was approximately 500 yd3 with a total weight of

Learn More"Fresh Concrete Pumping Arrest Investigation for Thixotropy by a CFD Modelling Apporach." In Rheology and Processing of Construction Materials, RheoCon 2019, SCC9, ed by. V. Mechtcherine, K. Khayat, and E. Secrieru, 23:580–587.

Learn MoreMany practical aspects of processing fresh concrete depend on its rheology, such as the pumping of the material. It is known that a lubricating layer is formed in the process, which significantly reduces the pumping pressure. However, these phenomena can hardly be considered in the usual rheological …

Learn MorePumping of fresh concrete is of utmost importance for concrete practice. Required pumping pressures are typically estimated based on design charts. However, with the increased use of chemical admixtures and the development of more flowable concrete mixtures, the …

Learn MoreAug 25, 2019 · Aug 25, 2019 · It is clear that flow re-initiation after rest in concrete pumping is poorly understood. Numerical simulation could be one approach for further analysis and is potentially important for practice. Future work such as simulation of concrete mixers, pressure increase after pumping arrest, formwork pressure decay and leakage are therefore recommended.

Learn MorePumping of fresh concrete is of utmost importance for concrete practice. Required pumping pressures are typically estimated based on design charts. Fresh Concrete Pumping Arrest Investigation

Learn MoreThe concrete pumping process is simulated by a CFD-DEM model. The relationship between structural parameters and pressure loss is investigated. Single-objective optimization was used for the investigation of pressure loss. The pressure loss of the optimized model is reduced by 5.45%.

Learn MoreConcrete pumping operations determine construction speed, finishing quality, durability and even structural integrity. When pumping operations cannot Fresh Concrete Pumping Arrest Investigation for Thixotropy by a CFD Modelling Approach | springerprofessional.de

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