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Expansive properties of the mixture C4ASH12 − 2CS III. Effects of temperature and restraint

✍ Scribed by V. Alunno Rossetti; G. Chiocchio; A.E. Paolini

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
594 KB
Volume
13
Category
Article
ISSN
0008-8846

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✦ Synopsis

The effects of temperature and restraint upon the hydration and the expansion of C4A~HI2-20~ mixture compacts in different contact solutions have been investigated. Temperatures above 20°C do apparently hinder the formation of am impervious felt-like layer of ettringite around the C4A~HI2 particles, thus greatly reducing the retarding effect of the lime. An uniaxial restraint of 1 Kg/cm 2 is enough to reduce sensibly the expansions which remain however high (about iOO~i). The results can be satisfactorily interpreted by the reaction and expansion mechanism hypothesized in our previous papers.

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