Marsh cone coupled to a plexiglas horizontal channel: Rheological characterization of cement grout

Benaicha, Mouhcine; Jalbaud, Olivier; Alaoui, Adil Hafidi; Burtschell, Yves

doi:10.1016/j.flowmeasinst.2015.06.004

Cited by 14 publications

(5 citation statements)

References 9 publications

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“…Slump diameter has been considered as a measurement index of flowability for a long time [34]. Grout-flow cone efflux time, which is often tested by marsh cone, could also be a parameter linked to flowability [35,36]. The flowability of grout mixes was evaluated by the combination of consistency, slump diameter and grout-flow cone efflux time in this research.…”

Section: Flowability Testmentioning

confidence: 99%

Reuse of Excavated Clayey Silt in Cement–Fly Ash–Bentonite Hybrid Back-fill Grouting during Shield Tunneling

Xiao

et al. 2020

Sustainability

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Excavated soils from tunnel construction need high treatment cost and pollute the environment. To investigate the feasibility of excavated clayey silt reused in back-fill grout, the flowability, stability and strength were taken as measurement indexes of grouting performance. The clayey silt was tested to be reused as substitutes for fly ash, bentonite and sand, respectively. The experimental results indicated that the clayey silt reused as a substitute for fly ash decreased the flowability and strength of grout mixes, and the clayey silt reused as a substitute for bentonite decreased the stability of grout mixes, and neither of them was feasible. The clayey silt reused as a substitute for sand decreased the flowability, but the grouting performance could be improved by adjusting the mix proportion to meet all grouting requirements. After adding the proportion of water to improve the flowability and increasing the cement:fly ash ratio to improve the strength, a scheme of clayey silt reutilization was suggested, which was cement:fly ash:bentonite:clayey silt:water = 280:230:100:680:660. At the end of this paper, the pore structure feature tests, X-ray diffraction (XRD) tests and scanning electron microscope (SEM) tests were performed to analyze the different morphology, microstructure and mineralogy characteristics before and after the clayey silt was reused as a total substitute for sand in grout mixes.

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Section: Flowability Testmentioning

confidence: 99%

Reuse of Excavated Clayey Silt in Cement–Fly Ash–Bentonite Hybrid Back-fill Grouting during Shield Tunneling

Xiao

et al. 2020

Sustainability

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“…This observation allows us to analyze the flow numeric profile and to compare it to the experimental profile. 16,17 F I G U R E 3 L-box test…”

Section: Introductionmentioning

confidence: 99%

“…Using the Plexiglas canal has the advantage of analyzing, at any time, the flow profile of studied concrete (Figure 8). This observation allows us to analyze the flow numeric profile and to compare it to the experimental profile 16,17 …”

Section: Introductionmentioning

confidence: 99%

Development of abacus for determining the rheological behavior of self‐compacting concrete

Benaicha

2022

Structural Concrete

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Widely used by architects and builders for its many qualities: strength, durability and also for its great adaptability to shapes, the self-compacting concrete (SCC) remains a material of great future both for major infrastructure works and for quality architectural achievements. Currently, to measure the rheological properties of the fresh concrete (plastic viscosity μ p and yield stress τ 0 ), the widely adopted test is the "concrete rheometer." However, the use of a rheometer on site is a very complex operation, because it is too expensive, and in addition, it requires a qualified person to move, handle or repair it. Hence, many laboratories use other empirical tests to predict the rheological behavior of concrete. Each of these tests characterizes only one of the two rheological

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“…Indeed, the latter give the material a significant heterogeneity, leading to the appearance of several types of interactions, including its physical and chemical interactions. Therefore, it seems reasonable to assert that the rheology of concrete is influenced by the behavior of its paste (Benaicha et al 2015;Bouvet et al 2010;Legrand 1972;Sonebi 2010). In fact, the flow of fresh concrete is not that of a pile of pebbles.…”

Section: Introductionmentioning

confidence: 99%

Slump Test: A New Empirical Model for High Yield Stress Materials

Kemer

Bouras

Sonebi

et al. 2021

Journal of Applied Engineering Sciences

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In order to decrease the fitting deviation between rheometrical measurements and empirical parameters using slump test, this paper proposes a new analytical method to evaluate the high yield stress of materials (cement pastes).In doing so, an experimental study was performed for measuring the empirical characteristics by cylindrical mold with different water to binder ratios (w/b) by aiming to increase the yield stress. Parallelly, experimental observations showed clearly the unyielded zone at flow stoppage of high yield stress samples. Based on these results, an idea was formed to applied metallic element at inlet of mold in order to push the spreading of paste. The obtained results of the model proposed in this paper were compared with the yield stress evaluated from shear flow curves using AR2000-rheometer with plate-plate geometry at rate-controlled. In fact, this study demonstrates the applicability and novelty of the present model in the process of relating the empirical parameters to yield stress.

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Marsh cone coupled to a plexiglas horizontal channel: Rheological characterization of cement grout

Cited by 14 publications

References 9 publications

Reuse of Excavated Clayey Silt in Cement–Fly Ash–Bentonite Hybrid Back-fill Grouting during Shield Tunneling

Reuse of Excavated Clayey Silt in Cement–Fly Ash–Bentonite Hybrid Back-fill Grouting during Shield Tunneling

Development of abacus for determining the rheological behavior of self‐compacting concrete

Slump Test: A New Empirical Model for High Yield Stress Materials

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