Modelling the loss of strength and porosity increase due to the leaching of cement pastes
| Autor: | Raoul François, Christophe Carde |
|---|---|
| Přispěvatelé: | Laboratoire Matériaux et Durabilité des constructions (LMDC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA) |
| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
Cement
Chemical process Materials science Bone decalcification 0211 other engineering and technologies 02 engineering and technology Building and Construction Stress distribution Cement pastes 021001 nanoscience & nanotechnology [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Compressive strength 021105 building & construction Leaching General Materials Science Leaching (metallurgy) Strength Composite material 0210 nano-technology Porosity |
| Zdroj: | Cement and Concrete Composites Cement and Concrete Composites, 1999, 21 (3), pp.181-188. ⟨10.1016/S0958-9465(98)00046-8⟩ Cement and Concrete Composites, Elsevier, 1999, 21 (3), pp.181-188. ⟨10.1016/S0958-9465(98)00046-8⟩ |
| ISSN: | 0958-9465 |
| DOI: | 10.1016/S0958-9465(98)00046-8⟩ |
| Popis: | International audience; Pure water leads to a progressive decalcification of hardened cement pastes. The physical and chemical processes of this degradation are relatively well defined today, but the consequences of the leaching on the porosity increase and the loss of strength have been only partially studied. Our work consists of correlating the alteration of these properties with the rate of degradation of the material. The leaching is achieved by an accelerated process. Compressive strength and water porosity are measured after different processing times in an aggressive solution. A physical phenomenon analysis leads us to propose a stress distribution model at rupture, and a calculation model of the porosity increase, taking into account the nature of the degraded hydrates (CSH). |
| Databáze: | OpenAIRE |
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