Correlation between Bleeding and Rheological Characteristics of Self-Compacting Concrete

Aicha, Mouhcine Ben; Burtschell, Yves; Alaoui, Adil Hafidi; Harrouni, Khalid El; Jalbaud, Olivier

doi:10.1061/(asce)mt.1943-5533.0001871

Cited by 37 publications

(21 citation statements)

References 16 publications

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“…Benaicha et al [ 104 ] proposed another simple method—V-funnel coupled to a horizontal Plexiglas channel—to assess the yield stress and plastic viscosity of SCC, especially at the construction site. A positive correlation was obtained between the theoretical yield stress and plastic viscosity obtained from the V-funnel, calculated using the equations provided by [ 102 , 105 ], and the actual yield stress and plastic viscosity values obtained using a R/S+ rheometer.…”

Section: Fresh Properties Of Sccmentioning

confidence: 89%

“…Various limits of SCC yield stress (τ) and plastic viscosity (µ) across the globe have been summarized in the form of rheographs and a workability box by [ 100 ]. The use of rheometers, as discussed under the mix design section, provide an alternative way to design and test the rheological properties of SCC in a more accurate and advanced way, and to provide the best assessment of bleeding tendency and or segregation resistance [ 101 , 102 , 103 ].…”

Section: Fresh Properties Of Sccmentioning

confidence: 99%

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Suitability of Blending Rice Husk Ash and Calcined Clay for the Production of Self-Compacting Concrete: A Review

2021

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One principal approach to achieve self-compacting properties is the increased amount of finer constituents of the mixture. This, in turn, increases cement consumption leading to higher greenhouse gas emissions. Pozzolanic materials, like rice husk ash or calcined highly kaolinitic clays, have gained increased attention as supplementary cementitious materials in self-compacting concrete production. These materials could be viable alternative supplementary cementitious materials for sub-Saharan Africa which already lacks fly ash, slag and silica fume. This current effort reviews the impact of rice husk ash and calcined clays for the production of self-compacting concrete. Special focus is on their impact on rheological, mechanical and durability properties of self-compacting concrete. Rice husk ash and, in particular, calcined highly kaolinitic clays are introduced as technical and cost-effective supplementary materials for use in self-compacting. The review disclosed a lack of knowledge when it comes to the use of low-kaolinitic calcined clays as sole SCM or together with rice husk ash, which could be a very promising combination for e.g., several countries in Africa. Further studies are needed on the rheological properties, shrinkage, creep, and durability of self-compacting concrete produced with other calcined common clays and their blend with rice husk ash.

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Section: Fresh Properties Of Sccmentioning

confidence: 89%

Section: Fresh Properties Of Sccmentioning

confidence: 99%

Suitability of Blending Rice Husk Ash and Calcined Clay for the Production of Self-Compacting Concrete: A Review

2021

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“…The higher values of the T25 cm and T30 cm times of WBBP formulations than C100 indicate a high yield strength and viscosity [ 60 ]. Thus, SCP having WBBP as a cement replacement will offer better resistance to segregation and bleeding due to the high yield strength and viscosity values [ 76 , 77 ].…”

Section: Resultsmentioning

confidence: 99%

Utilization of Solid Waste from Brick Industry and Hydrated Lime in Self-Compacting Cement Pastes

et al. 2021

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The huge amount of solid waste from the brick manufacturing industry can be used as a cement replacement. However, replacement exceeding 10% causes a reduction in strength due to the slowing of the pozzolanic reaction. Therefore, in this study, the pozzolanic potential of brick waste is enhanced using ultrafine brick powder with hydrated lime (HL). A total of six self-compacting paste mixes were studied. HL 2.5% by weight of binder was added in two formulations: 10% and 20% of waste burnt brick powder (WBBP), to activate the pozzolanic reaction. An increase in the water demand and setting time was observed by increasing the replacement percentage of WBBP. It was found that the mechanical properties of mixes containing 5% and 10% WBBP performed better than the control mix, while the mechanical properties of the mixes containing 20% WBBP were found to be almost equal to the control mix at 90 days. The addition of HL enhanced the early-age strength. Furthermore, WBBP formulations endorsed improvements in both durability and rheological properties, complemented by reduced early-age shrinkage. Overall, it was found that brick waste in ultrafine size has a very high degree of pozzolanic potential and can be effectively utilized as a supplementary cementitious material.

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“…In order to retain the workability of the HWC, binder content, w/b ratio, addition of SF, and SP are the crucial elements. At low binder content, addition of SP and mineral admixtures would increase the bleeding and segregation of the HWC due to the retardation in the cement hydration process, and therefore lengthening the setting time of the paste 36–41 . As Gökçe and Andiç‐Çakır 35 revealed, bleeding amounts increased due to the decrease of the binder content and utilization of viscosity modifier and fly ash for mix series with more than 0.4 w/b ratio (i.e., 0.48 and 0.56 w/b ratios).…”

Section: Resultsmentioning

confidence: 99%

Development and analysis of highly workable high‐strength heavyweight concrete using magnetite aggregates

Aslani

Lesslie

Hamidi

2020

Structural Concrete

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Heavyweight concrete (HWC) is produced by replacing natural aggregates in a concrete mix design with heavyweight aggregates of a higher specific gravity. HWC is mainly used for the prevention of leakage from radioactive containing structures and is hence primarily used in the medical and nuclear energy industries where this property is of particular benefit and importance. Also, high‐strength concrete (HSC) has been increasingly employed in both civil structures, such as high rise buildings and bridges and defense applications. This study makes attempt to develop and evaluate different concrete mixes, which are considered as high‐strength, heavyweight and highly workable in nature. Such mixes use magnetite as the primary aggregate. The three‐mentioned properties of these concrete types have been thoroughly investigated individually; however, there is a limited numbers of literature on the analysis of mix designs dealing with the three‐mentioned properties simultaneously, in which the water/cement ratio variation, and/or variation of the magnetite content have been assessed. In this study, nine highly workable high‐strength HWC mixes have been developed and fresh and hardened properties are discussed. The overall result indicates that the developed mixes satisfied the required high‐strength, heavyweight and highly workable criteria, as well as, compressive strength would increase by increasing the heavyweight aggregate content.

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Correlation between Bleeding and Rheological Characteristics of Self-Compacting Concrete

Cited by 37 publications

References 16 publications

Suitability of Blending Rice Husk Ash and Calcined Clay for the Production of Self-Compacting Concrete: A Review

Suitability of Blending Rice Husk Ash and Calcined Clay for the Production of Self-Compacting Concrete: A Review

Utilization of Solid Waste from Brick Industry and Hydrated Lime in Self-Compacting Cement Pastes

Development and analysis of highly workable high‐strength heavyweight concrete using magnetite aggregates

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