Comparison between NMR non destructive method and common invasive methods used for concrete structuration evolution
| Autor: | Magat, J., Sabine Care, Pamela Faure, Thierry Chaussadent |
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| Přispěvatelé: | Laboratoire Navier (navier umr 8205), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), Département Matériaux (IFSTTAR/MAT), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-PRES Université Paris-Est, Laboratoire des matériaux et structures du génie civil (LMSGC), Laboratoire Central des Ponts et Chaussées (LCPC)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Division Physico-chimie des Matériaux (LCPC/PCM), Laboratoire Central des Ponts et Chaussées (LCPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Cadic, Ifsttar, École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire Central des Ponts et Chaussées (LCPC) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Cement and its Applications Cement and its Applications, 2011, pp 72-77 12th International Congress of Chemistry of Cement (ICCC'07) 12th International Congress of Chemistry of Cement (ICCC'07), Jul 2007, France. 11p HAL |
| Popis: | A better understanding of the cement hydration evolution and of the development of cementitious materials microstructure at early age is very important for improving concrete durability. The microstructure, which depends on various factors (water-cement ratio, curing conditions ), is characterized by water content and pore-size distribution. The originality of this study is to compare relaxation and MRI along with common destructive methods (capacitive method, mass loss by heating or freeze drying ) to characterize cement porosity and free water content. With this approach, common techniques are used to identify phenomena observed by NMR and also provide validation of NMR as a tool to investigate cement hydration. The NMR technique is unique and allows to follow a same sample through time at a very early age and in a non-destructive way. Results obtained by these different techniques show a good correlation. Furthermore, this novel approach shows that NMR gives complementary information, and thus provides a complete study of cement hydration. |
| Databáze: | OpenAIRE |
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