Characterisation and microstructure of high-performance concretes reinforced with metal fibres ripened in seawater
| Autor: | Aldjia Boutiba, Rabah Chaid, Laurent Molez |
|---|---|
| Přispěvatelé: | Materials - Processes and Environment Research Unit, Université M'Hamed Bougara Boumerdes (UMBB), MT Rhéo, Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Materials science 0211 other engineering and technologies 02 engineering and technology slag Metal [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] 021105 building & construction 14. Life underwater Composite material 021101 geological & geomatics engineering Civil and Structural Engineering seawater Cement [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable Metallurgy technology industry and agriculture Slag Microstructure 6. Clean water Young age [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Ground granulated blast-furnace slag visual_art fibre HPC visual_art.visual_art_medium Formwork Seawater [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction [SPI.GCIV.RHEA]Engineering Sciences [physics]/Civil Engineering/Rehabilitation |
| Zdroj: | European Journal of Environmental and Civil Engineering European Journal of Environmental and Civil Engineering, Taylor & Francis, 2019, 23 (9), pp.1083-1093. ⟨10.1080/19648189.2017.1327898⟩ European Journal of Environmental and Civil Engineering, 2019, 23 (9), pp.1083-1093. ⟨10.1080/19648189.2017.1327898⟩ |
| ISSN: | 1964-8189 2116-7214 |
| DOI: | 10.1080/19648189.2017.1327898⟩ |
| Popis: | International audience; High-performance concretes reinforced with metal fibres (SFRHPC) have multiple advantages when they are used in the marine environment. These materials provide high strengths at the young age that permit faster formwork stripping, resistance to hydrostatic thrusts due to the tides, structural elements sections’ reduction, as well as weight reduction of the structure, and the increase of the abrasion resistance to sand or gravel. The maritime works are exposed to specific seawater aggressions. Seawater contains aggressive salts, which damage the concrete and the steel that it may contain. These salts are mainly chlorides and sulphates. This study investigated the ripening of steel fibre-reinforced high-performance concrete, with 15% substitution of cement by blast furnace slag, in Rance (France’s seawater). This experimental study analysed the effect of 6 and 24 months of ripening of the sample, in aggressive water, on the characterisation of the concrete and the microstructure of the cement’s matrix and its fibres. Also, in this study, after two years of concrete conservation, we carried out the chemical and mineralogical composition of the seawater. The results showed that there is no significant alteration of concrete kept in seawater and the steel fibres were not altered. In other words, it stayed passivated even after two years of ripening. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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