Pressure exerted on formwork by self-compacting concrete at early ages: A review

Gowripalan, Nadarajah; Shakor, Pshtiwan; Rocker, Paul

doi:10.1016/j.cscm.2021.e00642

Cited by 23 publications

(20 citation statements)

References 61 publications

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“…Concrete mobility is its ability to flow concrete under mechanical stresses. The restricted forces of flow are frictional, viscous and cohesive forces (Gowripalan et al , 2021). Due to adhesion, the cohesive force was developed and the adhesion forces were created because of adhesion among the aggregate particles and matrix.…”

Section: Rheological Properties Of Concretementioning

confidence: 99%

A review on concrete’s rheological properties

D.V.S.K.

Kumar²

2022

WJE

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Purpose This study aims on a broad review of Concrete's Rheological Properties. The Concrete is a commonly used engineering material because of its exquisite mechanical interpretation, but the addition of constituent amounts has significant effects on the concrete’s fresh properties. The workability of the concrete mixture is a short-term property, but it is anticipated to affect the concrete’s long-term property. Design/methodology/approach In this review, the concrete and workability definition; concrete’s rheology models like Bingham model, thixotropy model, H-B model and modified Bingham model; obtained rheological parameters of concrete; the effect of constituent’s rheological properties, which includes cement and aggregates; and the concrete’s rheological properties such as consistency, mobility, compatibility, workability and stability were studied in detail. Findings Also, this review study has detailed the constituents and concrete’s rheological properties effects. Moreover, it exhibits the relationship between yield stress and plastic viscosity in concrete’s rheological behavior. Hence, several methods have been reviewed, and performance has been noted. In that, the abrasion resistance concrete has attained the maximum compressive strength of 73.6 Mpa; the thixotropy approach has gained the lowest plastic viscosity at 22 Pa.s; and the model coaxial cylinder has recorded the lowest stress rate at 8 Pa. Originality/value This paper especially describes the possible strategies to constrain improper prediction of concrete’s rheological properties that make the workability and rheological behavior prediction simpler and more accurate. From this, future guidelines can afford for prediction of concrete rheological behavior by implementing novel enhancing numerical techniques and exploring the finest process to evaluate the workability.

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Section: Rheological Properties Of Concretementioning

confidence: 99%

A review on concrete’s rheological properties

D.V.S.K.

Kumar²

2022

WJE

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“…The results demonstrated that the density of the heavyweight SCC mixes was directly proportional to the lateral pressure on the formwork. An intensive review by Gowripalan et al [22] summarizes that increased densities lowered both lateral pressure and concrete's mobility by increasing the contact value between particles.…”

Section: Introductionmentioning

confidence: 99%

Experimental based assessment of formwork pressure theoretical design models for self-compacting concrete

Nilimaa

Ćwirzeń

Emborg

2023

Journal of Building Engineering

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“…In other studies, self-filling concrete, HPC, and reactive powder concrete have been developed on the basis of packing theory. The objective was to achieve optimal particle filling in order to improve the engineering properties and durability [ 29 , 30 , 31 , 32 ]. Using packing density theory, Zhang et al [ 33 ] investigated an aeolianite HPC proportion design.…”

Section: Introductionmentioning

confidence: 99%

Engineering Properties of Green and Ecofriendly Grouting Materials with Different Sand Filling Ratios

Juang

Kuo

2023

Materials

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With the active development of offshore wind power worldwide, the development of a green and ecofriendly grouting material (GEGM) has garnered global attention. Such a material must also be developed in Taiwan. Therefore, in this study, a series of environmentally friendly recycled materials were mixed in different proportions to develop a GEGM which can be implemented in the future construction of offshore wind turbines. To evaluate the mechanical properties of the GEGM, low water-to-binder (W/B) ratios (i.e., 0.21, 0.27, and 0.35) were used; cement was replaced with fixed amounts (20%) of ground granulated blast-furnace slag and fly ash; 2%, 2.5%, and 3% superplasticizers (SPs) were added; and two levels of sand content (60% and 70%) were used. The setting time of the GEGM was used to evaluate its workability; its compressive strength and flexural strength were used to evaluate its mechanical properties; and its sulfate resistance, length changes, and four-terminal resistance were used to evaluate its durability. The relationship between the durability and drying shrinkage of the GEGM was subsequently evaluated, and the ratio of final to initial setting times (F/I value) was calculated to determine the effects of the amount of SP added on workability. The highest F/I value (7.7) was achieved when 2 wt.% modified lignin sulfonate (MLS) was added because of the high viscosity of MLS, which compromised the workability of the concrete. The optimal compressive strength (83.62 MPa) was achieved when a W/B ratio of 0.21 was used, when the sand content was 70%, and when a 2% polycarboxylate superplasticizer (PCE) was added, whereas the optimal flexural strength (20.86 MPa) was achieved when 2.5% PCE was added. According to the nondestructive test results and the R2 value (>0.7) obtained from regression analyses of mechanical properties, the study results are reliable and may serve as a reference for future construction projects.

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Pressure exerted on formwork by self-compacting concrete at early ages: A review

Cited by 23 publications

References 61 publications

A review on concrete’s rheological properties

A review on concrete’s rheological properties

Experimental based assessment of formwork pressure theoretical design models for self-compacting concrete

Engineering Properties of Green and Ecofriendly Grouting Materials with Different Sand Filling Ratios

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