Numerical simulation on slump test of fresh concrete based on lattice Boltzmann method

Li, Yue; Mu, Jinlei; Wang, Zigeng; Liu, Yunze; Du, Hongwu

doi:10.1016/j.cemconcomp.2021.104136

Cited by 20 publications

(5 citation statements)

References 27 publications

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“…Finally, faster computing methods that can utilise GPU computation such as Lattice-Boltzmann or discrete element methods should be considered, especially for the simulation of fibre-reinforced concrete, where the behaviour of the fluid is strongly influenced by the fibres and aggregates [30][31][32].…”

Section: Resultsmentioning

confidence: 99%

CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

Jirout,

Krupica,

Kolomijec

2024

Fluids

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This study connects and compares the results from two different rheological measurement techniques, namely, the slump test and rotational rheometry, on UHPC (Ultra-High-Performance Concrete) through the use of commercially available numerical simulation software ANSYS Fluent 2022 R2. The workability and resulting mechanical properties of the UHPC (a material used in construction) are highly dependent on its rheology and, hence, also on the composition and level of homogeneity of the assessed mixture. It is generally understood that the most suitable rheological model for concrete mixtures is the Hershel–Bulkley model. However, obtaining reliable rheological data is complicated as the wide-gap rotational rheometers developed for concrete show bias in their measurements even on precise laboratory equipment, while common industrial tests, such as the slump test, do not produce the usual shear rate–shear stress relation and, hence, do not allow for more complex analysis. Recently, a new methodology for the rheological measurement of non-Newtonian fluids that utilises a simple power input–rotation speed measurement was published. However, in this study, only model liquids were evaluated, and the method was not validated for more complex fluids such as pastes. Therefore, it was the goal of this study to show this method’s suitability for fine pastes through a comparison with the slump test, using numerical simulation.

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Section: Resultsmentioning

confidence: 99%

CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

Jirout,

Krupica,

Kolomijec

2024

Fluids

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“…The slump test is carried out to determine the workability of regular fresh concrete or concrete with additives (Li et al, 2021). The slump test was carried out using a tool called the Abrams cone by filling the Abrams cone with three layers of fresh concrete, each with 1⁄3 of the contents of the Abrams cone.…”

Section: Slump Test Resultsmentioning

confidence: 99%

Analysis of The Addition Polypropylene Fibre and 8670 Mn Viscocrete added Material on The Split Tensile Strength and Modulus of Elasticity of Concrete

Zulkarnain

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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This study used waste coconut fibre and HDPE plastic as partial aggregate replacement materials. Coconut fibre ash has pozzolanic properties, which contain high silicate elements. High-density polyethene (HDPE) plastic has more potent, complex, opaque material properties and is more resistant to high temperatures. Superplasticizer is an admixture added to concrete during mixing and during placing to improve its strength performance. This study aims to study the effect of adding HDPE plastic as a substitute for coarse aggregate, coconut fibre ash as a substitute for fine aggregate and Viscrocrete-8670 MN on absorption, concrete compressive strength and elastic modulus of concrete. With variations in the addition of BN HDPE plastic, 0.5%, 1%, and 1.5%, the coarse aggregate passed 3/8 filter retained by filter no 4, 3% coconut fibre ash for each variation of concrete and Viscrocrete-8670 MN by 0.8% by weight of cement. The maximum value for each concrete test is the absorption value of concrete (4.23% for regular concrete), compressive strength (32.49 MPa for 1.5% HDPE concrete), and the modulus of elasticity (3152 MPa for 1.5% HDPE concrete).

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“…If a shrinkage crack appears on the beam's correct side, it can reveal the curing method. As seen, concrete structures have microcracks due to load, creep, and shrinkage [14]. As a result of this, the beam's inner concrete remains unaffected by this point in time.…”

Section: Analysis Of Tomographymentioning

confidence: 91%

Influence Of Helical Confinement On Crack Development In RCC Beams

Abdelbaki,

Kuckian,

Obaidi

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Structures made of reinforced concrete are susceptible to developing cracks when they are in the path of earthquakes, strong winds, or increased structural loading. It is therefore possible that it will be necessary to manage structural cracking in the Service Limit State to maximise the lifetime and strength of the structural components under any stress. Helical containment is superior to rectangular containment in terms of its ability to strengthen and ductile the Reinforced Concrete (RC) structural member. In the current work, six distinct beams were each subjected to a series of tests to see how they behaved in terms of cracking when subjected to bending loads. Each of these tests used a unique helical pitch space distance. The beams all measured 150 mm by 150 mm and 750 mm in length. They were designed in accordance with the criteria of Euro code 2, with the identical dimensions. Both 50 and 100 mm were used to take the measurement for the helical pitch. The findings indicate that the utilisation of helical elements does influence the cracking behaviour of the beams. The most important finding was that the measurement of the crack’s thickness was slightly reduced when the beams were restricted to a helical zone with a closer spacing between them. The fact that the theoretical crack is longer than the actual crack that was measured experimentally demonstrates that the Euro code 2 standard provides a more accurate forecast as well as a higher factor of safety. This is demonstrated by the fact that the theoretical crack is larger than the actual crack that was measured.

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Numerical simulation on slump test of fresh concrete based on lattice Boltzmann method

Cited by 20 publications

References 27 publications

CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

CFD Analysis of Ultra-High-Performance Concrete Rheological Tests

Analysis of The Addition Polypropylene Fibre and 8670 Mn Viscocrete added Material on The Split Tensile Strength and Modulus of Elasticity of Concrete

Influence Of Helical Confinement On Crack Development In RCC Beams

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