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PhD Thesis

dc.contributor.advisorMedina Encina, Fernandoes
dc.creatorMontero Chacón, Francisco de Paulaes
dc.identifier.citationMontero Chacón, F.d.P. (2013). Multisicale Analysis for the Design of Fiber-Reinforced Cementitious Composites. (Tesis Doctoral Inédita). Universidad de Sevilla, Sevilla.
dc.description.abstractThe birth of the so-called fiber-reinforced cementitious composites (FRCC) supposes a major breakthrough in Civil Engineering. This enhanced version of traditional concrete provides excellent mechanical properties by modifying the material structure. The change can be faced at different scales of observation, resulting in different properties. Thus, within this context, interesting questions regarding its internal design and behavior arise. The most important one is how to design FRCC when specific requirements have to be fulfilled. Traditionally, concrete has been treated as an ordinary homogeneous material. However, being the most used material in construction implies that any small contribution to the enhancement of its performance will promote a deep impact at the structural level. Con-crete is a complex multiscale material that covers different length and time scales, from the nanometers to the meters, and implies different disciplines from Chemistry to Struc-tural Engineering, passing through Materials Science. By modifying the internal structure at these scales it is possible to obtain a completely new material. In the case of FRCC this solution passes through the introduction of natural or artificial fibers into a cementitious matrix. Although the use of FRCC is becoming more extended, there is a lack of numerical models for understanding in details its fracture processes. In this thesis a multiscale methodology based on different numerical models is presented for the design of these types of materials, from the micro- to the macroscale, paying special attention to fracture mechanics. The first scale studied in this work is the microscale. A fiber-reinforced lattice model is developed for the design of engineered cementitious composites (ECC) at this scale. The original lattice model is enhanced by the inclusion of fibers that interact with the cement paste and this model is used to numerically characterize the effect of fibers on the mesoscopic properties of the resulting ECC. On the other hand, a gen|es
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 España
dc.titleMultiscale Analysis for the Design of Fiber-Reinforced Cementitious Compositeses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases

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