Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"two parameter fracture model"”.
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Dispersion of graphene nanoplatelets in water with surfactant and reinforcement of mortar with graphene nanoplatelets
… The data were then analyzed in keeping with the two-parameter fracture model. The mechanical results were inconclusive, but they suggested a path forward to continued research.
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Fiber Orientation Effects on the Fracture and Flexural Toughness of Extruded Fiber Reinforced Concrete for Additive Manufacturing
… were derived for specimens fabricated using two different methods of casting: conventional cast construction and pump-driven extrusion. Through the extrusion process, fibers are more likely to be oriented along the length of the member being cast and will therefore be more efficient since …
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The influence of high performance matrices on fracture behavior of concrete
… strength of concrete, but its contributions to fracture behavior remains unclear. In this study, the influence of replacing cement by silica fume and fly ash on the cement matrix-coarse aggregate interfacial bond, compressive stress-strain behavior and fracture behavior of concrete is …
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Performance and Design of Extruded Fiber-Reinforced Mortar with Preferentially Aligned Fibers
… of fiber-reinforced concrete (FRC), focusing on fracture and flexural toughness properties, the impact of fiber orientation and distribution, and the evaluation of flexural models for predicting the behavior of functionally graded FRC. It embarks on a critical investigation aimed at bridging a …
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Quantification of bond strength between cementitious materials and microbially-induced calcium carbonate precipitates
… nutrient media was applied to cracked beams in two different environmental conditions. Several experimental control treatments lacking bacteria were applied to additional sets of beams. Furthermore, bio-deposits were grown on prepared surfaces of cement paste in order to analyze an isolated …
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Three-dimensional modeling of failure in quasi-brittle materials and structures
… and failure due to the presence of a nonlinear fracture process zone ahead of the crack front. Predictive models and design methodologies have to be able to reliably calculate the load capacity, or structural strength, of structures while taking into account the nonlinearity of the material …