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Texture of calcium hydroxide near the cement paste-aggregate interface

✍ Scribed by Rachel J. Detwiler; Paulo J.M. Monteiro; Hans-Rudolf Wenk; Zengqiu Zhong

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 359 KB
Volume: 18
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(88)90109-3

No coin nor oath required. For personal study only.

✦ Synopsis

Several researchers have been using an X-ray diffraction technique to examine the orientation of calcium hydroxide crystals at the interface between cement paste and aggregate. Recently, however, the use of X-ray diffraction for this purpose has been called into question because the goniometer sweeps through only a single a-c, thus missing any crystals which are not oriented with either a (0001) plane or a (101"1) plane parallel to the interface. This paper describes the degree of preferred orientation of calcium hydroxide crystals using pole figures. The results confirm the validity of the X-ray diffraction technique and provide new information about the nature of the cement paste-aggregate interface.

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