Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tension-Stiffening in Reinforced High Performance Fiber-Reinforced Cement-Based Composites under Direct Tension
Abstract The unique properties of High Performance Fiber-reinforced Cement-based Composite (HPFRCC) materials provide significant damage reduction and energy dissipation in structural systems and are under investigation by numerous researchers. Unlike traditional fiber reinforced concrete, ductile HPFRCC materials can carry tension to strains greater than the yield strain of reinforcing steel and exhibit distributed compression damage with little to no spalling. Understanding the interaction between the reinforcement and the HPFRCCs through experimental testing is the focus of this research to develop modeling and performance prediction tools. A large-scale dogbone test set-up has been validated and the results for two different HPFRCC materials are presented. The multiple cracking observed in all specimens is hypothesized to have led to both distributed yielding and hardening in the reinforcement, which did not fracture “early” but rather fractured at strains of 14.5-19%, well beyond the typical strains reached at peak stress for grade 60 reinforcement (~10%).
Tension-Stiffening in Reinforced High Performance Fiber-Reinforced Cement-Based Composites under Direct Tension
Abstract The unique properties of High Performance Fiber-reinforced Cement-based Composite (HPFRCC) materials provide significant damage reduction and energy dissipation in structural systems and are under investigation by numerous researchers. Unlike traditional fiber reinforced concrete, ductile HPFRCC materials can carry tension to strains greater than the yield strain of reinforcing steel and exhibit distributed compression damage with little to no spalling. Understanding the interaction between the reinforcement and the HPFRCCs through experimental testing is the focus of this research to develop modeling and performance prediction tools. A large-scale dogbone test set-up has been validated and the results for two different HPFRCC materials are presented. The multiple cracking observed in all specimens is hypothesized to have led to both distributed yielding and hardening in the reinforcement, which did not fracture “early” but rather fractured at strains of 14.5-19%, well beyond the typical strains reached at peak stress for grade 60 reinforcement (~10%).
Tension-Stiffening in Reinforced High Performance Fiber-Reinforced Cement-Based Composites under Direct Tension
Moreno, D. M. (Autor:in) / Trono, W. (Autor:in) / Jen, G. (Autor:in) / Ostertag, C. (Autor:in) / Billington, S. L. (Autor:in)
01.01.2012
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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