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Study of stabilized phases in high alumina cement mortars Part I Hydration at elevated temperatures followed by carbonation

✍ Scribed by M. Pérez; T. Vázquez; F. Triviño

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 558 KB
Volume: 13
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(83)90077-7

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✦ Synopsis

The use of temperatures higher than 30°0 during the hydration of 1:3 high alumina cement mortar leads to the formation of the cubic hydra te C3AH~, hence avoiding the conversion of CAHIo to C3AH 6. The subsequent-carbonation of 03AH 6 with 002 and therm~l treatm@nt leads to the formation of stable carbonated pRases. The optimum hydration the minimum necessary times to get 03AH~: 3 hours at 8000, ages are 6 hours at 60°C. The product is in a state we ca~l "semiplastic" in which the next structural transformation -carbonation -occurs more easily than when the specimens have a rigid structure, The effect of a super-water-reducing admixture has also been studied.

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✍ M. Pérez; T. Vázquez; F. Triviño 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 476 KB

The effects of adding ground limestone to high alumina cement mortar were studied. The hydration was c~ed out at 60°0 to form the cubic hydrate C AM directly, hence avoiding the conversion of CAM to o I O3AM6, an~ a~ 20 C, Other experiments involved subsequent carbonation with CO 2 an~ thermal ~reat