Experimental and micromechanical investigation on the mechanical and durability properties of recycled aggregates concrete
| Autor: | Camille Chateau, Jean-François Barthélémy, Ayodele Adessina, Denis Garnier, Amor Ben Fraj |
|---|---|
| Přispěvatelé: | Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet DIMA (Cerema Equipe-projet DIMA), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Chloride diffusion Recycled aggregates concrete 0211 other engineering and technologies 02 engineering and technology Chloride [SPI.MAT]Engineering Sciences [physics]/Materials [SPI]Engineering Sciences [physics] Indentation 021105 building & construction medicine General Materials Science Composite material Elastic modulus Microscale chemistry Micromechanics Building and Construction 021001 nanoscience & nanotechnology Durability Elasticity [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering Macroscopic scale Mortar 0210 nano-technology medicine.drug |
| Zdroj: | Cement and Concrete Research Cement and Concrete Research, Elsevier, 2019, 126, pp.105900. ⟨10.1016/j.cemconres.2019.105900⟩ |
| ISSN: | 0008-8846 |
| DOI: | 10.1016/j.cemconres.2019.105900⟩ |
| Popis: | International audience; In this work, we conducted an experimental and micromechanical investigation on the mechanical and chloride diffusion properties of recycled aggregates concrete (RAC). Due to the composite aspect of the recycled concrete aggregates (RCA), their impact on the properties of concretes is first evaluated by conducting an experimental campaign and further numerically modeled using micromechanical tools. Local mechanical properties of phases such as the attached mortar, the interfacial transition zones (ITZ) and the aggregates are also investigated by means of indentation tests at nano and microscale. Finally, experimentally informed multi scale model is established and the overall elastic modulus and chloride diffusion coefficient of concretes (with different rates of RCA) are computed and compared to experimental results at macroscopic scale for discussion. The established model provides a predictive tool for the mechanical and chloride diffusion properties of RAC. |
| Databáze: | OpenAIRE |
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