Temperature effects on failure behavior of self-compacting high strength plain and fiber reinforced concrete
| Autor: | Luciano Sambataro, Hernán Xargay, Guillermo Etse, Paula Folino |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Materials science Three point flexural test 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Fiber-reinforced concrete INGENIERÍAS Y TECNOLOGÍAS Fiber reinforced concrete 0201 civil engineering law.invention Stress (mechanics) chemistry.chemical_compound law High-strength concrete 021105 building & construction Ultimate tensile strength General Materials Science Fiber Composite material Ingeniería de la Construcción Civil and Structural Engineering Polypropylene Volumetric strains Fracture mechanics Failure behavior Building and Construction High temperature chemistry Ingeniería Civil Self-compacting concrete |
| Popis: | This work analyzes the effect of temperature on the mechanical behavior up to failure of self-compacting high strength concrete specimens when subjected to three different stress paths, corresponding to the uniaxial compression, splitting tensile and three point bending tests. The experiments were performed under residual conditions. In addition to the room temperature case, two different temperatures were considered in the preliminary heating phase in electrical furnace, namely, 300 °C and 600 °C. Both, plain concrete and fiber reinforced concrete were used, with a hybrid combination of steel and polypropylene fibers in the last case. Thirty days after the thermal treatment, concrete specimens were subjected to the mechanical tests up to failure. A relevant conclusion in this work is that the addition of fibers to the cementitious matrix improves concrete fracture energy release capacity not only under room temperature condition, but also under moderate and high temperature. This evidence which is valid for all different considered tests, is a consequence of the fiber contribution to the overall sample integrity much beyond peak. The work includes a detailed analysis of failure processes under the different considered load scenarios, the evolution of volumetric strains under uniaxial compression, SEM images of thermally treated plain concrete and the discussion of the degradation caused by temperature on the different mechanical properties. Fil: Xargay, Hernan Daniel. Universidad de Buenos Aires. Facultad de Ingeniería. Laboratorio de Métodos Numéricos en Ingeniería; Argentina Fil: Folino, Paula. Universidad de Buenos Aires. Facultad de Ingeniería. Laboratorio de Métodos Numéricos en Ingeniería; Argentina Fil: Sambataro, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina Fil: Etse, Jose Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Centro de Métodos Numéricos y Computacionales en Ingeniería; Argentina |
| Databáze: | OpenAIRE |
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