Chemical stability of hollow glass microspheres in cementitious syntactic foams

Bas, Halim Kerim; Jin, Weiqing; Gupta, Nïkhil

doi:10.1016/j.cemconcomp.2020.103928

Cited by 17 publications

(5 citation statements)

References 23 publications

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“…The wall thickness and aspect ratio define hollow geometry of the HGM. The particle size enclosure also plays an important role in the severity of the HGM reaction [41].…”

Section: Particle Size Distribution Analysismentioning

confidence: 99%

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

2022

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Syntactic foam made from hollow glass microspheres (HGM) in an epoxy matrix has proven to be a good material with a strong structural strength. Understanding filler particle size variation is important in composite material formation, especially in syntactic foam, because of its numerous applications such as aerospace, marine, and structural purposes. In this present work, the effects of particle variation in different sizes (20–24 µm, 25–44 µm, 45–49 µm, and 50–60 µm) on the mechanical properties of the syntactic foam composites with a focus on flexural strength, modulus, and fracture surfaces are investigated. The particle sizes are varied into five volume fractions (5, 10, 15, 20, and 25 vol%). The results show that the highest flexural strength is 89 MPa at a 5 vol% fraction of 50–60 µm particle size variation with a 69% increase over the neat epoxy. This implies that the incorporation of HGM filler volume fraction and size variation has a strong effect on the flexural strength and bending modulus of syntactic foam. The highest particle size distribution is 31.02 at 25–44 µm. The storage modulus E’ increased at 30 °C, 50 °C, and 60 °C by 3.2%, 47%, and 96%, respectively. The effects of wall thickness and aspect ratio on the size of the microstructure, the fracture surfaces, and the viscoelastic properties are determined and reported accordingly.

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“…The wall thickness and aspect ratio define hollow geometry of the HGM. The particle size enclosure also plays an important role in the severity of the HGM reaction [41].…”

Section: Particle Size Distribution Analysismentioning

confidence: 99%

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

2022

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“…(iii) the HGM had porous structure, the interior void would accommodate the ASR gel if the thermal expansion was triggered; (iv) little water content inside the L-UHPC did not provide sufficient water to evoke the ASR. A recent work [108] also confirmed the safe use of HGM in cementitious mixture, the explanation was that the reservoir space of HGM could take in the internal stress and ASR expansion.…”

Section: Roles Of Hgm and Lwa In L-uhpcmentioning

confidence: 76%

A new simplified method for calculating short-term and long-term consolidation settlements of multi-layered soils considering creep limit

Chen

Feng

Yin

2021

Computers and Geotechnics

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“…The wall thickness and aspect ratio define hollow geometry of the HGM. The particle size enclosure also play an important role in the severity of the HGM reaction [43].…”

Section: Particle Size Distribution Analysismentioning

confidence: 99%

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

Afolabi¹,

Kanny²,

Mohan³

2022

Preprint

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Syntactic foam has proven to be a good material with a strong structural strength. Understanding filler particle size variation is important in composite material formation especially in syntactic foam because of their numerous applications such as aerospace, marine and structural purposes. In this present work, the effects of particle variation in different sizes (20-24µm, 25-44µm, 45-49µm, and 50-60µm) on the mechanical properties of the syntactic foam composites with focus on flexural strength, modulus, and fracture surfaces were investigated. The particle sizes were varied into five volume fractions (5, 10, 15, 20, and 25vol%). The results shows that highest flexural strength is 89MPa at 5 vol% fraction of 50-60µm particles size variation which is 69% increase than the neat epoxy. This implies that the incorporation of HGM filler volume fraction and size variation has a strong effect on the flexural strength and bending modulus of syntactic foam. The microstructure of the fracture surfaces and the viscoelastic properties was determined and reported accordingly.

show abstract

Chemical stability of hollow glass microspheres in cementitious syntactic foams

Cited by 17 publications

References 23 publications

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

A new simplified method for calculating short-term and long-term consolidation settlements of multi-layered soils considering creep limit

Analysis of Particle Variation Effect on Flexural Properties of Hollow Glass Microsphere Filled Epoxy Matrix Syntactic Foam Composites

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