The determination of crystallinity of tobermorite in autoclaved products

✍ Scribed by N. Hara; H.G. Midgley

• Book ID: 102997369
• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 503 KB
• Volume: 10
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(80)90078-2

✦ Synopsis

The "crystallinity" of the calcium silicate hydrate, tobermorite produced by autoclaving lime-silica mixtures has been defined as being equivalent to a mixture of amorphous and fully crystalline phases. The "crystallinity" can be measured from the peak height of either the 002 or 220 X-Ray diffraction reflections relative to an added internal standard or by the ratio of the peak heights of these reflections. The crystallite size measured from the line width of the 002 and 220 reflections sh~,s that the crystallite size increases with crys tallini ty.

The surface area calculated from the c~dstallite volume shows a linear relation with the surface area measured by Nitrogen absorption. ~ak ~ o o 2 ~ ~ ?c~ 2 ~.