Search results for " transverse reinforcement"

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Stress-Strain Law for Confined Concrete with Hardening or Softening Behavior

2013

This paper provides a new general stress-strain law for concrete confined by steel, fiber reinforced polymer (FRP), or fiber reinforced cementitious matrix (FRCM), obtained by a suitable modification of the well-known Sargin’s curve for steel confined concrete. The proposed law is able to reproduce stress-strain curve of any shape, having both hardening or softening behavior, by using a single closed-form simple algebraic expression with constant coefficients. The coefficients are defined on the basis of the stress and the tangent modulus of the confined concrete in three characteristic points of the curve, thus being related to physical meaningful parameters. It will be shown that if the v…

Constant coefficientsMaterials scienceFiber reinforced polymers (FRP)Article SubjectStress–strain curvefiber reinforced cementitiuos matrix (FRCM)Fibre-reinforced plasticConfined concretefiber reinforced cementitiuos matrix (FRCM); Confined concrete; Fiber reinforced polymers (FRP); modelsmodelsSettore ICAR/09 - Tecnica Delle Costruzionilcsh:TA1-2040LawTangent modulusHardening (metallurgy)Algebraic expressionComposite materialConfinement of concrete general stress-strain law transverse reinforcement FRP FRCMCementitious matrixlcsh:Engineering (General). Civil engineering (General)SofteningCivil and Structural EngineeringAdvances in Civil Engineering
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Behaviour in compression of lightweight fiber reinforced concrete confined with transverse steel reinforcement

2004

Abstract The compressive behavior of lightweight fiber reinforced concrete confined with transverse reinforcement consisting of steel stirrups or spirals was analyzed. Pumice stone and expanded clay aggregates were utilized to decrease the weight of the composite; hooked steel fibers were also added. The investigation was carried out by testing cylindrical and prismatic specimens of different sizes in compression using an open-loop displacement control machine, recording the full load–deformation curves. The influence of the dimensions and shape on the bearing capacity and on the ductility of the specimens confined with transverse steel reinforcements was analyzed. The results show the poss…

Materials sciencebusiness.industryStress–strain curveComposite numberlightweight concrete pumice stone expanded clay steel fibers steel transverse reinforcement compression tests stress-strain curves shape effectsBuilding and ConstructionFiber-reinforced concreteStructural engineeringCompression (physics)law.inventionTransverse planelawGeneral Materials ScienceBearing capacityComposite materialReinforcementDuctilitybusiness
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