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Communication Dans Un Congrès Année : 2011

Multi-technique investigation of calcium hydroxide crystals at the concrete surface

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Résumé

The durability and aesthetic qualities of high-performance concrete, which makes it particularly suitable for architectural applications, are constantly compromised by environmental aggressions. In this study, an innovative solution was developed to protect the concrete from these aggressions, which consists of growing a mineral coating on the concrete surface. The coating is composed of layered calcium hydroxide crystals, whose nucleation and growth are triggered byvarious non-ionic surfactants (the details of the process will not be presented). This paper describes the procedure used to investigate the structure of the formed crystals. Scanning Electron Microscopy and optical microtopography were used to determine the morphology of the crystals. Image analysis allowed the quantification of their amount, size and shape. The contribution and limits of each technique are discussed.

Dates et versions

hal-00676703 , version 1 (06-03-2012)

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Eléonore Gueit, Evelyne Darque-Ceretti, Patrick Tintillier, Matthieu Horgnies. Multi-technique investigation of calcium hydroxide crystals at the concrete surface. Fifth International Conference on Computational Methods and Experiments in Materials Characterisation, Jun 2011, Island of Kos, Greece. pp.15-26 - ISBN: 978-1-84564-538-0 - eISBN: 978-1-84564-539-7, ⟨10.2495/MC110021⟩. ⟨hal-00676703⟩
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