The effects of lithium hydroxide solution on alkali silica reaction gels created with opal: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Mitchell, Lyndon D. / Beaudoin, James J. / Grattan-Bellew, Patrick

The reaction of Nevada opal with calcium hydroxide, potassium hydroxide and lithium hydroxide solutions was investigated. In addition, opal was exposed to a combined solution of these three hydroxides. The progress of the three reactions was followed using X-ray diffraction (XRD), ²⁹Si nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). The XRD results indicated the presence of a low-angle peak exclusive to the lithium-based reactions. The NMR results suggested a change in the silicate structure in the presence of lithium. These techniques indicated that the reaction of the alkali with the opal starting material is inhibited and perhaps stopped in the presence of lithium hydroxide. SEM revealed that the morphology of the reaction products on the surface of the reacted opal grains is markedly different invariably. It was concluded that evidence to support the theory of a protective layer exists and that the nature of the layer varies with ion type.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Mitchell, Lyndon D. / Beaudoin, James J. / Grattan-Bellew, Patrick

The reaction of Nevada opal with calcium hydroxide, potassium hydroxide and lithium hydroxide solutions was investigated. In addition, opal was exposed to a combined solution of these three hydroxides. The progress of the three reactions was followed using X-ray diffraction (XRD), ²⁹Si nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). The XRD results indicated the presence of a low-angle peak exclusive to the lithium-based reactions. The NMR results suggested a change in the silicate structure in the presence of lithium. These techniques indicated that the reaction of the alkali with the opal starting material is inhibited and perhaps stopped in the presence of lithium hydroxide. SEM revealed that the morphology of the reaction products on the surface of the reacted opal grains is markedly different invariably. It was concluded that evidence to support the theory of a protective layer exists and that the nature of the layer varies with ion type.

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Mitchell, Lyndon D. / Beaudoin, James J. / Grattan-Bellew, Patrick

The reaction of Nevada opal with calcium hydroxide, potassium hydroxide and lithium hydroxide solutions was investigated. In addition, opal was exposed to a combined solution of these three hydroxides. The progress of the three reactions was followed using X-ray diffraction (XRD), ²⁹Si nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). The XRD results indicated the presence of a low-angle peak exclusive to the lithium-based reactions. The NMR results suggested a change in the silicate structure in the presence of lithium. These techniques indicated that the reaction of the alkali with the opal starting material is inhibited and perhaps stopped in the presence of lithium hydroxide. SEM revealed that the morphology of the reaction products on the surface of the reacted opal grains is markedly different invariably. It was concluded that evidence to support the theory of a protective layer exists and that the nature of the layer varies with ion type.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Document information

Title:

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Contributors:

Mitchell, Lyndon D. (author) / Beaudoin, James J. (author) / Grattan-Bellew, Patrick (author)

Published in:

Cement and Concrete Research ; 34 ; 641-649

Publication date:

2004

Size:

9 Seiten, 24 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2003.10.011

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Portlandzement , Lithiumverbindung , Kieselerde , Gel , magnetische Kernresonanz , Rasterelektronenmikroskopie , Röntgenbeugung , Röntgenanalyse , Opal , Alkali-Silica-Reaktion , Calciumhydroxid , Kaliumhydroxid , Lithiumhydroxid , Beton

Similar titles

Effects of lithium hydroxide on alkali silica reaction gels created with opal

Qi, Y. / Wen, Z. y. | British Library Online Contents | 2007

Effects of lithium hydroxide on alkali silica reaction gels created with opal

Qi, Yin | Online Contents | 2007

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Mitchell, Lyndon D. | Online Contents | 2004

The effects of lithium hydroxide solution on alkali silica reaction gels created with opal

Mitchell, L. D. / Beaudoin, J. J. / Grattan-Bellew, P. | British Library Online Contents | 2004

Influence of lithium hydroxide on alkali-silica reaction

Bulteel, D. / Garcia-Diaz, E. / Degrugilliers, P. | British Library Online Contents | 2010