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Expansion characteristics of a compounded-expansive additive and pre-hydrated high alumina cement based expansive additive

✍ Scribed by Yan Fu; Jian Ding; J.J. Beaudoin

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
732 KB
Volume
25
Category
Article
ISSN
0008-8846

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✦ Synopsis

The expansion characteristics of a newly developed compoundedexpansive additive (CEA) and a pre-hydrated high alumina cement based particulate expansive additive are reported. Effect of temperature during pre-hydration and drying of high alumina cement is studied. The quick setting mechanism and volume stability of expansive cements containing different types of expansive additives am also discussed. It is apparent that high temperature treatment, an integral step in the production of prehydrated high alumina cement, will significantly reduce the expansion value and delayed expansion development. The compounded-expansive additive has desirable expansion characteristics with potential industrial application.

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