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

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.cemconres. 2003.10.011 Cement and Concrete Research, 34, 4, pp. 641-649, 2004-04-01 The Effects of lithium hydroxide solution on alkali silica reaction gels created with opal Mitchell, L. D.; Beaudoin, J. J.; Grattan-Bellew, P. E. AbstractThe reaction of Nevada opal with calcium hydroxide, potassium 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),

Effect of Lithium Nitrate on the Alkali‐Silica Reaction Gel

“…The presence of two compounds containing potassium suggests that the gel lost potassium from its structure when exposed to lithium. The presence of crystalline peaks was also reported in other studies of the effect of lithium in the ASR 16 . The formation of a lithium silicate when lithium nitrate was used to reduce the ASR reaction has been reported after XRD analysis 17…”

“…The presence of crystalline peaks was also reported in other studies of the effect of lithium in the ASR. 16 The formation of a lithium silicate when lithium nitrate was used to reduce the ASR reaction has been reported after XRD analysis. 17 (2) IR The infrared transmission spectra for samples of the original and Li-treated gel are presented in Fig.…”

ASR prevention — Effect of aluminum and lithium ions on the reaction products

“…In this regard, the aluminum-containing reaction products that are dominated by SiO 2 -tetrahedra chains are significantly different from the ones in the reference sample, with its structure dominated by SiO 2 -tetrahedra layers. The effect of aluminum on the structure of the reaction product is similar to the one of LiNO 3 : its addition leads as well to a structure dominated by Q 2 [16,40]. This change in the structure could have implications on the swelling potential of the reaction product.…”

Influence of various monovalent cations and calcium ion on the colloidal fouling potential

“…It has been found that lithium preferentially adsorbs at the silica interface, forming an impervious layer [35]. This anomalous property of lithium with silica has been reported by other researchers both in colloid science [34,35] and in the field of concrete research [36,37]. It is postulated that the reason for the higher fouling potential is the impervious layer formed by lithium ions that screen the silica hairs that are formed on the silica surface.…”