3D-Printed Mortars with Combined Steel and Polypropylene Fibers

Lesovik, Valery; Fediuk, Roman; Amran, Mugahed; Аласханов, А.Х.; Володченко, А.А.; Murali, G.; Uvarov, V. A.; Elistratkin, M.Yu.

doi:10.3390/fib9120079

Cited by 27 publications

(11 citation statements)

References 34 publications

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“…Polymer fibers reduce the fluidity of mortar mixtures and achieve a better shape retention. There is little difference in the influence of polymer fibers on the compressive strength of mortar, and the flexural strength is obviously enhanced, but attention should be paid to the anisotropy of mortar and the orientation of fiber direction [ 88 ]. The fluidity of materials, printing direction and printing time have a significant influence on the overall bearing capacity of 3DPMs.…”

Section: Conclusion and Outlooksmentioning

confidence: 99%

Properties of 3D-Printed Polymer Fiber-Reinforced Mortars: A Review

Liu

2022

Polymers

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The engineering applications and related research of fiber-reinforced cement and geopolymer mortar composites are becoming more and more extensive. These reinforced fibers include not only traditional steel fibers and carbon fibers, but also synthetic polymer fibers and natural polymer fibers. Polymer fiber has good mechanical properties, good bonding performance with cement and geopolymer mortars, and excellent performance of cracking resistance and reinforcement. In this paper, representative organic synthetic polymer fibers, such as polypropylene, polyethylene and polyvinyl alcohol, are selected to explore their effects on the flow properties, thixotropic properties and printing time interval of fresh 3D-printed cement and geopolymer mortars. At the same time, the influence of mechanical properties, such as the compressive strength, flexural strength and interlaminar bonding strength of 3D-printed cement and geopolymer mortars after hardening, is also analyzed. Finally, the effect of polymer fiber on the anisotropy of 3D-printed mortars is summarized briefly. The existing problems of 3D-printed cement and polymer mortars are summarized, and the development trend of polymer fiber reinforced 3D-printed mortars is prospected.

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Section: Conclusion and Outlooksmentioning

confidence: 99%

Properties of 3D-Printed Polymer Fiber-Reinforced Mortars: A Review

Liu

2022

Polymers

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“…The resistance of fibrous concrete to impact relies on several factors: concrete strength, fibre dosage, fibre geometry and fibre type. In recent years, fibres with various kinds and geometries are commercially available [14,15]. When it comes to concrete reinforcement, a wide range of fibres may be employed.…”

Section: Projectile Impact On Concretementioning

confidence: 99%

Effect of Needle Type, Number of Layers on FPAFC Composite against Low-Velocity Projectile Impact

et al. 2021

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Protective structures subjected to intensive loads that may benefit from the use of multilayer composite structures with excellent hardness and impact resistance represent an emerging research field in recent times. In this study, low-velocity projectile impact tests were performed on Functionally-graded Preplaced Aggregate Fibrous Concrete (FPAFC) mixtures to evaluate their performance. The effects of projectile needle type, fibre type and hybridization in addition to the number of layers in the composites on projectile impact were investigated. The bioinspiration of the excellent impact strength of turtle shells was used to design an FPAFC comprising a higher amount of steel and polypropylene fibres at the outer layers. In parallel, one and two-layered concretes were also cast to assess the effectiveness of three-layered FPAFC. The tests were performed on disc specimens using non-deformable compound bevel, convex edge and hollow edge projectiles. The damage severity was quantified by the top damage area, bottom damage area and depth of penetration. In addition, a simple analytical model for predicting the composite mass expulsion was developed and implemented. Findings indicated that regardless of fiber type and distribution, the compound bevel projectile needle produced the lowest impact numbers for all single, double and triple-layer specimens compared to the convex edge and hollow edge projectiles. Repeated projectile impacts increased the penetration depth and damaged area at the top and bottom surfaces of all targets. Targets were more resistant to convex edge and hollow edge projectile penetration than the compound bevel. The experimental and analytical model results for mass expelled from the top surface are reasonably acceptable. This research gives an idea of developing advanced fibrous composite with superior impact resistance for the promising protective structures.

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“…This method was used to create fiber reinforced concrete (FRC) in the 20th century, which gained popularity in the building sector because of its increased strength. Steel fiber incorporation in the cement matrix improves the toughness, yield load, first cracking load, moment of resistance, and crack resistance of reinforced concrete beams subjected to transverse loading, according to research on fiber-reinforced concrete [54][55][56][57][58][59][60]. The improvement in the ductility for fiber addition, on the other hand, is a critical characteristic for structural concrete members.…”

Section: Introductionmentioning

confidence: 99%

Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

Prakash¹,

Divyah²,

Srividhya³

et al. 2022

Materials

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The construction industry relies heavily on concrete as a building material. The coarse aggregate makes up a substantial portion of the volume of concrete. However, the continued exploitation of granite rock for coarse aggregate results in an increase in the future generations’ demand for natural resources. In this investigation, coconut shell was used in the place of conventional aggregate to produce coconut shell lightweight concrete. Class F fly ash was used as a partial substitute for cement to reduce the high cement content of lightweight concrete. The impact of steel fiber addition on the compressive strength and flexural features of sustainable concrete was investigated. A 10% weight replacement of class F fly ash was used in the place of cement. Steel fiber was added at 0.25, 0.5, 0.75, and 1.0% of the concrete volume. The results revealed that the addition of steel fibers enhanced the compressive strength by up to 39%. The addition of steel fiber to reinforced coconut shell concrete beams increased the ultimate moment capacity by 5–14%. Flexural toughness was increased by up to 45%. The span/deflection ratio of all fiber-reinforced coconut shell concrete beams met the IS456 and BS 8110 requirements. Branson’s and the finite element models developed in this study agreed well with the experimental results. As a result, coconut shell concrete with steel fiber could be considered as a viable and environmentally-friendly construction material.

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3D-Printed Mortars with Combined Steel and Polypropylene Fibers

Cited by 27 publications

References 34 publications

Properties of 3D-Printed Polymer Fiber-Reinforced Mortars: A Review

Properties of 3D-Printed Polymer Fiber-Reinforced Mortars: A Review

Effect of Needle Type, Number of Layers on FPAFC Composite against Low-Velocity Projectile Impact

Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

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