Production of nepheline/quartz ceramics from geopolymer mortars

Kuenzel, Carsten; Grover, Liam M.; Vandeperre, Luc; Boccaccını, Aldo R.; Cheeseman, Christopher R.

doi:10.1016/j.jeurceramsoc.2012.08.022

Cited by 125 publications

(83 citation statements)

References 32 publications

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“…Crystallization of nephaline (NaAlSiO 4 ) from kaolin geopolymer gradually occurred on heating. Kuenzel et al [13], and Markovic et al [14], found similar finding that nephaline detected after the geopolymer exposed to high temperature. The phase analysis for each sample with incorporation amount of 2, 4, 6 and 8 wt.…”

Section: Resultssupporting

confidence: 52%

XRD and FTIR study of the effect of ultra high molecular weight polyethylene (UHMWPE) as binder on kaolin geopolymer ceramics

Ahmad¹,

Kamarudin²,

Sandu³

2017

AIP Conference Proceedings

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Effect on mechanical properties of glass reinforced epoxy (GRE) pipe filled with different geopolymer filler molarity for piping application AIP Conference Proceedings 1835, 020042 (2017) Abstract.The effect of addition of Ultra High Molecular Weight Polyethylene (UHMWPE) as binder on Kaolin Geopolymer Ceramics was study using infrared spectroscopy (FTIR) and X-ray diffraction (XRD) method. UHMWPE is added to the optimum kaolin geopolymer ceramics that obtained by mechanical performance, phase and microstructure analysis with the concentration of NaOH, solid/liquid and Na 2 SiO 3 /NaOH ratio of 12 M, 1.0 and 0.24 respectively. Kaolin geopolymer powders with addition of Ultra High Molecular Weight Polyethylene content of 2, 4, 6 and 8 (wt. %) were pressed into pellets followed by sintering at 1200 °C. At this temperature, the amorphous phase of geopolymer were fully crystallized. The results obtained by the XRD testing confirm that amorphous geopolymer transform to crystalline nepheline ceramics upon heating. The phase analysis for Kaolin geopolymer ceramics with addition of UHMWPE are similar to the kaolin geopolymer ceramics without UHMWPE indicates that the incorporation of a little amount of UHMWPE does not affect the structure feature of geopolymer. The increasing in intensity of nepheline peak contribute to high strength. The FTIR spectra showed the disappearance of water band after sinter at high temperature.

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Section: Resultssupporting

confidence: 52%

XRD and FTIR study of the effect of ultra high molecular weight polyethylene (UHMWPE) as binder on kaolin geopolymer ceramics

Ahmad¹,

Kamarudin²,

Sandu³

2017

AIP Conference Proceedings

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show abstract

“…The major activation products present in both binders are amorphous, with a certain amount of unreacted mullite and quartz. When exposed to 800°C for 3 h, some of the amorphous phases in F5S0 crystallize into nepheline (NaAlSiO4), which is often found in heated geopolymers [34,46,47]. In F5S30, the diffraction peaks attributed to nepheline are much more intense than in F5S0.…”

Section: Thermal Resistancementioning

confidence: 99%

Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete

Zhang

Provis

Reid³

et al. 2015

Cement and Concrete Composites

442

160

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This study reports the synthesis and characterization of geopolymer foam concrete (GFC). A Class F fly ash with partial slag substitution was used for GFC synthesis by mechanical mixing of preformed foam. The GFCs exhibited 28 day compressive strengths ranging from 3 to 48 MPa with demolded densities from 720 to 1600 kg/m 3 (105°C oven-dried densities from 585 to 1370 kg/m 3 ), with the different densities achieved through alteration of the foam content.The thermal conductivity of GFCs was in the range 0.15 to 0.48 W/m·K, showing better thermal insulation properties than normal Portland cement foam concrete at the same density and/or at the same strength. The GFC derived from alkali activation of fly ash as a sole precursor showed excellent strength retention after heating to temperatures from 100 to 800°C, and the post-cooling compressive strength increased by as much as 100% after exposure at 800°C due to densification and phase transformations. Partial substitution of slag for fly ash increased the strength of GFC at room temperature, but led to notable shrinkage and strength Preprint of: Z Zhang, JL Provis, A Reid, H Wang, Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete (GFC), Cement and Concrete Composites, 62(2015): 97-105. Final published version is at: http://dx.doi.org/10.1016/j.cemconcomp.2015.03.013 2 loss at high temperature. Thin GFC panels (20 -25 mm) exhibited acoustic absorption coefficients of 0.7-1.0 at 40 to 150 Hz, and 0.1-0.3 at 800 to 1600 Hz.

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“…Most frequently granular fillers are used for this purpose, such as silica sand [24], calcite and dolomite sand [25], grinded electrical porcelain [26], grinded high-alumina refractory brick [27], aAl 2 O 3 powder [28], a-quartz sand and fine alumina powder [29], chamotte powder [30], kyanite (nesosilicate) aggregates [31], cordierite powder [32], burned clay [33], expanded clay [34], quartz fume [35]. Besides, fiber reinforcement was applied such as SiC fibers [36], basalt fibers [37], also steel or polymer fibers [38].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical properties of particle-reinforced geopolymer composite with various aggregate gradation of fine ceramic filler

Kovařík

Rieger

Kadlec

et al. 2017

Construction and Building Materials

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Production of nepheline/quartz ceramics from geopolymer mortars

Cited by 125 publications

References 32 publications

XRD and FTIR study of the effect of ultra high molecular weight polyethylene (UHMWPE) as binder on kaolin geopolymer ceramics

XRD and FTIR study of the effect of ultra high molecular weight polyethylene (UHMWPE) as binder on kaolin geopolymer ceramics

Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete

Thermomechanical properties of particle-reinforced geopolymer composite with various aggregate gradation of fine ceramic filler

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