Cement-based composites reinforced with localized and magnetically oriented Al2O3 microplatelets

Carnelli, Davide; Libanori, Rafael; Feichtenschlager, Bernhard; Nicoleau, Luc; Albrecht, Gerhard; Studart, André R.

doi:10.1016/j.cemconres.2015.08.003

Cited by 12 publications

(6 citation statements)

References 19 publications

(24 reference statements)

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“…It should also be noticed that the agglomeration influences more in the decrease of compressive strength than the flexual strength. This can be attributed to the micro-beam effect of the LDHnano flakes as proven in [57], 2D stiff filler is more effective to disperse the stress from the vertical direction.…”

Section: Porosity and Mechanical Properties Of The Mortarmentioning

confidence: 89%

“…Different with the flexible GNP, LDH is a kind of stiff unit element [53] and will transfer the stress efficiently and which improves the mechanical properties. In [57], stiff 2-D nano-fillers have been suggested to be used in ultra-high performance concrete (UHPC) due to the excellent mechanical property enhancement effect. It should also be noticed that the agglomeration influences more in the decrease of compressive strength than the flexual strength.…”

Section: Porosity and Mechanical Properties Of The Mortarmentioning

confidence: 99%

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Relationship between the particle size and dosage of LDHs and concrete resistance against chloride ingress

Brouwers

2018

Cement and Concrete Research

113

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Section: Porosity and Mechanical Properties Of The Mortarmentioning

confidence: 89%

Section: Porosity and Mechanical Properties Of The Mortarmentioning

confidence: 99%

Relationship between the particle size and dosage of LDHs and concrete resistance against chloride ingress

Brouwers

2018

Cement and Concrete Research

113

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“…Applying magnetic torque on the ceramic microparticles during the printing process allowed for the precise control of the reinforcement within each voxel throughout the printed part. Carnelli et al also took advantage of the UHMR effect to reinforce cement‐based materials with UHMR alumina platelets. The high magnetic torque that can be applied to UHMR ceramic microparticles offers an effective method for creating a new family of finely controlled structural materials with outstanding properties.…”

Section: Fabrication and Actuation Of Composites Materials With Magnementioning

confidence: 99%

Actuating Soft Matter with Magnetic Torque

Erb

Martin

Soheilian

et al. 2016

Adv Funct Materials

218

200

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Here, recent significant developments are reviewed in manipulating soft matter systems through the use of magnetic torque. Magnetic torque enables the orientation, assembly, and manipulation of thermally fluctuating systems in broad material fields including biomaterials, ceramic and composite precursor suspensions, polymer solutions, fluids, foams, and gels. Magnetism offers an effective, safe, and massively parallel manufacturing approach. By exploiting magnetic torque, leading soft matter researchers have demonstrated new technologies in rheology, life sciences, optics, and structural materials. Specifically, magnetic torque has been used to assemble particle suspensions, to fabricate and actuate composite materials, and to control and manipulate biological materials. In each of these applications, there are energetic limitations to magnetic torque that need to be understood and characterized. However, magnetic torque offers a promising remote‐controlled approach to creating and enabling new soft matter technologies.

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“…Recently, magnetic slip casting has been used at much lower magnetic field strength (< 40 mT) to manipulate surface magnetized alumina (Al 2 O 3 ) platelets [16]. Fine control over these magnetized materials has led to reinforced composites [17][18][19][20], self-shaping composites [21], tunable fluorescence emission [22], and additive manufacturing processes such as 3D magnetic printing [23,24].…”

Section: Introductionmentioning

confidence: 99%

Stiff, porous scaffolds from magnetized alumina particles aligned by magnetic freeze casting

Frank

Naleway

Haroush

et al. 2017

Materials Science and Engineering: C

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Bone consists of a hard mineral phase and a compliant biopolymer phase resulting in a composite material that is both lightweight and strong. Osteoporosis that degrades spongy bone preferentially over time leads to bone brittleness in the elderly. A porous ceramic material that can mimic spongy bone for a one-time implant provides a potential solution for the future needs of an aging population. Scaffolds made by magnetic freeze casting resemble the aligned porosity of spongy bone. A magnetic field applied throughout freezing induces particle chaining and alignment of lamellae structures between growing ice crystals. After freeze drying to extract the ice and sintering to strengthen the scaffold, cubes from the scaffold center are mechanically compressed along longitudinal (z-axis, ice growth direction) and transverse (y-axis, magnetic field direction) axes. The best alignment of lamellar walls in the scaffold center occurs when applying magnetic freeze casting with the largest particles (350nm) at an intermediate magnetic field strength (75mT), which also agrees with stiffness enhancement results in both z and y-axes. Magnetic moments of different sized magnetized alumina particles help determine the ideal magnetic field strength needed to induce alignment in the scaffold center rather than just at the poles.

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Cement-based composites reinforced with localized and magnetically oriented Al2O3 microplatelets

Cited by 12 publications

References 19 publications

Relationship between the particle size and dosage of LDHs and concrete resistance against chloride ingress

Relationship between the particle size and dosage of LDHs and concrete resistance against chloride ingress

Actuating Soft Matter with Magnetic Torque

Stiff, porous scaffolds from magnetized alumina particles aligned by magnetic freeze casting

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