Phase Development of NaOH Activated Blast Furnace Slag Geopolymers Cured at 90 deg. C

Journal Article · Thu Jul 23 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3203243· OSTI ID:21344298

Bo, Zhang; Bigley, C; Ryan, M J ^[1]; MacKenzie, K J. D. ^[2]; Brown, I W. M. ^[1]

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1. Industrial Research Limited, PO Box 31310, Lower Hutt 5040 (New Zealand)
2. MacDiarmid Institute for Advanced Materials and Nanotechnology, PO Box 31310, Lower Hutt 5040 (New Zealand)

Geopolymers were synthesized from blast furnace slag activated with different levels of NaOH and cured at 90 deg. C. The crystalline and amorphous phases of the resulting geopolymers were characterized by XRD quantitative analysis, and {sup 29}Si and {sup 27}Al MAS NMR. Amorphous species are predominant in materials at all NaOH levels. In the amorphous phase, aluminium substituted silicate species (Q{sup 2}(1Al)) dominated among the species of Q{sup 0}, Q{sup 1}, Q{sup 2}(1Al) and Q{sup 2}(where Q{sup n}(mAl) denotes a silicate tetrahedron [SiO{sub 4}] with n bridging oxygen atoms and m adjacent tetrahedra substituted with an aluminate tetrahedron [AlO{sub 4}]). In addition, it was also found that 4-fold coordination aluminium [AlO{sub 4}] species ({sup 27}Al chemical shift 66.1 ppm) in low NaOH containing materials differs from the species ({sup 27}Al chemical shift 74.3 ppm) in high NaOH containing materials.

• OSTI ID: 21344298
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1151; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALI METAL COMPOUNDS
ALUMINATES
ALUMINIUM
ALUMINIUM 27
ALUMINIUM COMPOUNDS
ALUMINIUM ISOTOPES
AMORPHOUS STATE
BLAST FURNACES
CHALCOGENIDES
CHEMICAL SHIFT
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELEMENTS
EVEN-ODD NUCLEI
FURNACES
HYDROGEN COMPOUNDS
HYDROXIDES
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
METALS
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN
OXYGEN COMPOUNDS
RESONANCE
SCATTERING
SEMICONDUCTOR MATERIALS
SILICATES
SILICON 29
SILICON COMPOUNDS
SILICON ISOTOPES
SILICON OXIDES
SLAGS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STABLE ISOTOPES
X-RAY DIFFRACTION