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Showing 1 to 16 of 16 for “"Concrete Damage"”.
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Numerical Modeling of UHPC using a Concrete Damage Plasticity Model
Ultra-High Performance Concrete (UHPC) is a type of concrete that is known for its high compressive strength, elastic-plastic or strain hardening tensile behavior, and enhanced material ductility and toughness. These properties are achieved through the use of a low water-to-binder ratio, optimized …
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Modeling recycled aggregate concrete crack by extended finite element method and concrete damage plasiticity
Crushing concrete to bring the aggregates back to be used for concrete structures is a process of creating recycled aggregate (RA). Recycled aggregate concrete (RAC) has become increasingly important in the field of construction. The use of recycled aggregate concrete made from recycled aggregate …
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Flexural Behaviour of Steel Fibre Reinforced Concrete Tunnel Linings
The promotion of steel fibre reinforced concrete (SFRC) as a construction material for tunnel linings has prompted a number of researchers to focus on methods of evaluating their flexural strength and stiffness. This thesis presents the results of an experimental and numerical investigation of the …
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Finite element analysis and experimental validation of reinforced concrete single-mat slabs subjected to blast loads
… research is to study the response of reinforced concrete slabs subjected to blast loading as they can be used as protective structures around the main structure. An experimental investigation has been performed in a separate study involving blast-testing of 12 reinforced concrete slabs in a shock …
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Modelling Masonry as a Continuum: Finite Element Analysis using ABAQUS
… benchmark results and comparative analyses with Concrete Damage Plasticity (CDP) model and Piecewise Rigid Displacement (PRD) method, the MC model has demonstrated its effectiveness in capturing structural behaviour and collapse characteristics. For instance, in the analysis of the Torre del …
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Evaluation of Elastic-Plastic and Damage Models for Ultra High Performance Concrete (UHPC)
<p>Ultra-high performance concrete (UHPC) has been developed in recent decades as a new class of concrete which exhibits increased strength, durability and long-term stability when compared with normal strength concrete (NSC) and high performance concrete (HPC). While extensive research has …
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Blast and impact response of elastomer-coated concrete
… application of a spray-on elastomer coating to concrete structural elements. While encouraging results have been reported in the literature for masonry and steel substrates, it remains to be understood if, and by what mechanism this retrofit can enhance the blast and impact resistance of …
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Numerical Modelling of Steel Fibre Reinforced Concrete Subjected to Fatigue Loading
Concrete dominates the construction industry because of its strength, durability, and versatility; however, it is weak when loaded in tension and thus susceptible to the formation of cracks when under tensile stresses. Steel Fibre Reinforced Concrete (SFRC) improves post-cracking behaviour through …
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Slender FRP Elements as Discrete Reinforcement for Concrete
… that look like fibers used for reinforcing concrete but with a very different reinforcing mechanism. These elements, referred to as “Needles” are very rigid and strong; when intersected by growing cracks in concrete under heavy and increasing loads, they do not break and deform minimally. In …
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Probabilistic seismic demand models of RC bridge columns retrofitted with shape memory alloy spirals
… been attributed to the failure of reinforced concrete (RC) bridge columns due to lack of flexural ductility. Despite the revision of structural design standards to accommodate the lessons learned from these earthquakes, a significant number of RC bridge columns, built prior to these revisions, …
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Evaluation of the residual prestress force in aged railway concrete sleepers considered for reuse
… a conventional railway track is the prestressed concrete sleeper. In South Africa, these sleepers are designed to last for 40 years, and their replacement plan is aligned with their design life. Given the desire to extend the useful life of sleepers, aged concrete sleepers are often removed from …
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Investigations of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) Column
Ultra-high-performance concrete (UHPC) has attracted significant attention in recent decades due to its superior compressive strength and exceptional durability, while concerns have been raised due to the fact that inherent brittleness of concrete resulted in an explosive failure of UHPC. To extend …
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Inelastic web crushing performance limits of high-strength-concrete structural walls
… cross sections with the use of high-strength-concrete (HSC).The possibility of web crushing failure in shear dominated reinforced concrete element rises when the dimensions of the boundary elements become larger and the webs becomes thinner. Web crushing, or diagonal compression failure, …
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Deterioro del hormigón sometido a ensayos acelerados de hielo-deshielo en presencia de cloruros
… frente a ciclos de hielo-deshielo. 1. ABSTRACT Concrete deterioration due to freeze-thaw cycles in the presence of de-icing salts is a frequent cause of problems in concrete bridges and other civil infrastructures in Europe. Concrete damage generated by freeze-thaw cycles can be internal, mainly …
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Repair of damaged end regions of prestressed concrete girders using fiber reinforced polymer composite materials
… efficient repair and retrofit material for many concrete infrastructure applications. FRP can be applied to concrete using many techniques, but primarily as either externally bonded laminates or near-surface mounted (NSM) bars or plates. These repair methods have been shown to be effective when …