The Viscosity Properties of Sodium Silicate Solutions

Yang, Xiaohu; Zhu, Weiling; Yang, Qing

doi:10.1007/s10953-007-9214-6

Cited by 90 publications

(32 citation statements)

References 11 publications

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“…With the compositional changes shown in Figure 5, both viscosity and density of melts in equilibrium with quartz and feldspar will drop dramatically with temperature, likely leading to buoyancy-driven ascent of LTM ( Figure 10). Yang et al (2008) measured viscosities of 0.001 Pa s for 38% Na 2 Si 2 O 5 hydrous solutions at 120°C (1 bar); measured temperature dependence indicates viscosity…”

Section: 1029/2019jb017654mentioning

confidence: 96%

“…The problem, as explained by Coogan (2008), is that the required greenschist facies temperatures are not reached when cold seawater Figure 10. Viscosity and density changes with temperature from wet basaltic melts at 1200°C to wet rhyolitic melts at 700°C (this curve assumes 5 wt.% dissolved H 2 O) to anticipated values of viscosity and density for low temperature melt based on measurements of Na 2 Si 2 O 5 solutions (Yang et al, 2008).…”

Section: 1029/2019jb017654mentioning

confidence: 99%

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Continuously Changing Quartz‐Albite Saturated Melt Compositions to 330 °C With Application to Heat Flow and Geochemistry of the Ocean Crust

Lundstrom

2020

JGR Solid Earth

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Melt compositions in equilibrium with quartz and albite at 0.1 GPa and temperatures from 819 to 330 °C are reported for cold seal experiments in the Na2O‐Al2O3‐SiO2‐H2O system. At 60–70 °C intervals, melt compositions continuously change from rhyolite‐like melts with <10 wt.% H2O at the quartz‐albite eutectic to melts of nearly endmember Na2Si2O5 having >30 wt.% H2O at 330 °C (vapor undersaturated). Melt Na2O increases while SiO2 and Al2O3 decrease down temperature. Experiments performed at T > 600 °C are vapor saturated with <9.9–21 wt.% H2O while those T < 600 °C are vapor undersaturated with 18–37 wt.% H2O. Because of the continuous change in the liquid's composition down temperature, all compositions can be called melts; in reality, their high water contents may also lead to being termed hydrous fluids. These results indicate that igneous processes continue to temperatures >300 °C below the haplogranite solidus. The water‐rich melts at low temperature have low viscosities and densities suggesting that they buoyantly ascend by reactive flow at low melt porosities (<5%). Formation of low‐temperature melt will occur along the sides of gabbro bodies of mid‐ocean ridges, resulting in large‐scale convection that removes heat from the lower crust. This circulation may move heat off axis influencing observed heat flow. Melt reaction processes result in silicic differentiates (plagiogranites) and formation of greenschist metabasalts. This frees calcium from silicate bonding, providing an important sink for CO2 in Earth's carbon cycle. Sr isotopes of the ocean crust change with ocean crust production rates indicating mid‐ocean ridge systems are a major control on Earth's climate over time.

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Section: 1029/2019jb017654mentioning

confidence: 96%

Section: 1029/2019jb017654mentioning

confidence: 99%

Continuously Changing Quartz‐Albite Saturated Melt Compositions to 330 °C With Application to Heat Flow and Geochemistry of the Ocean Crust

Lundstrom

2020

JGR Solid Earth

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“…The recrystallisation reaction of this CLDH in water or electrolyte solutions is normally fast and approaches completion, 7,17 and the incomplete reaction of CLDH in sodium silicate activator solutions might be related to its high viscosity, which hindered the surface hydrolysis process. 29,43,44 For the HT-like phase recrystallised from CLDH in sodium silicate solution, the interlayer species should be mainly hydroxyl groups and water molecules. Intercalation of polymeric silicon (Si) groups in the interlayers could be possible; however, it is not evident in this study, as the polymerised silica groups would significantly increase the basal spacing of the recrystallised product.…”

Section: Early-day Reaction Product Formationmentioning

confidence: 99%

Layered double hydroxides modify the reaction of sodium silicate-activated slag cements

Bernal

Provis

2019

Green Materials

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The impact of adding two types of layered double hydroxides (LDHs), commercial hydrotalcite (HT) and its thermally treated form (CLDH), on the reaction kinetics and phase assemblage development of a sodium silicate-activated slag cement was investigated. The reaction kinetics of LDH-modified cements was assessed by isothermal calorimetry, and the results were correlated with in situ attenuated total reflection Fourier transform infrared spectroscopy results collected over the first days of reaction, to identify the structural evolution of the main binding phase forming in these cements: a sodium-containing calcium aluminosilicate hydrate (C-(N)-AS -H)-type gel. The addition of either HT or CLDH into sodium silicate-activated slag paste accelerates the precipitation of reaction products and increases the formation of HT in these cements, without causing significant changes to the C-(N)-AS -H binding phase. This is extremely relevant in terms of the durability of alkali-activated slag cements, as a higher content of the HT-like phase has the potential to reduce their chloride permeability and enhance carbonation resistance. 52 Cite this article Ke X, Bernal SA and Provis JL (2019) Layered double hydroxides modify the reaction of sodium silicate-activated slag cements.

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“…It was also reliably established that solutions of silicates of strong bases (alkali metals, except lithium [16,17], and quaternary ammonium bases [11]) do not exhibit the rheological anomaly. As an example, in Fig.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

The rheological anomaly in water-silicate systems: a possible thermodynamic explanation

Maliavski

Zhuravlova²,

Denysiuk

2017

EEJET

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The Viscosity Properties of Sodium Silicate Solutions

Cited by 90 publications

References 11 publications

Continuously Changing Quartz‐Albite Saturated Melt Compositions to 330 °C With Application to Heat Flow and Geochemistry of the Ocean Crust

Continuously Changing Quartz‐Albite Saturated Melt Compositions to 330 °C With Application to Heat Flow and Geochemistry of the Ocean Crust

Layered double hydroxides modify the reaction of sodium silicate-activated slag cements

The rheological anomaly in water-silicate systems: a possible thermodynamic explanation

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