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Carbonation-decarbonation of concretes studied by the way of carbon and oxygen stable isotopes

✍ Scribed by Nourredine Rafai; René Letolle; Philippe Blanc; Philippe Gegout; Eliane Revertegat

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
550 KB
Volume
22
Category
Article
ISSN
0008-8846

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✦ Synopsis

ABSTRACF

Cements cylinders were submitted for three years to a CO2 aggressive solution (pH 4). The comparison of carbonate content, and 13C and 180 isotope variations of CO3 = with depth and time, leads to a carbonation/decarbonation model the constraints of which are strenghtened by the isotopic data. This implies to consider secondary carbonation processes during the elimination of calcium towards the aggressive external solution in order to simulate isotopic evolution.

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