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Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
Abstract High Performance Fiber Reinforced Cementitious Composites (HPFRCC) show strain hardening behavior accompanied with multiple micro-cracks under static tension. The high ductility and load carrying capacity resulting from their strain hardening behavior is expected to increase the resisting capacity of structures subjected to extreme loading situations, e.g., earthquake, impact or blast. However, the promise of HPFRCCs for dynamic loading applications stems from their observed good response under static loading. In fact, very little research has been conducted to investigate if their good static response translates into improved dynamic response and damage tolerance. This experimental study investigates the tensile behavior of HPFRCC using High strength steel fibers (High strength hooked fiber and twisted fiber) under various strain rates ranging from static to seismic rates. The test results indicate that the tensile behavior of HPFRCC using twisted fiber shows rate sensitivity while that using hooked fiber shows no rate sensitivity. The results also show that rate sensitivity in twisted fibers is dependent upon both fiber volume fraction and matrix strength, which influences the interface bond properties.
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
Abstract High Performance Fiber Reinforced Cementitious Composites (HPFRCC) show strain hardening behavior accompanied with multiple micro-cracks under static tension. The high ductility and load carrying capacity resulting from their strain hardening behavior is expected to increase the resisting capacity of structures subjected to extreme loading situations, e.g., earthquake, impact or blast. However, the promise of HPFRCCs for dynamic loading applications stems from their observed good response under static loading. In fact, very little research has been conducted to investigate if their good static response translates into improved dynamic response and damage tolerance. This experimental study investigates the tensile behavior of HPFRCC using High strength steel fibers (High strength hooked fiber and twisted fiber) under various strain rates ranging from static to seismic rates. The test results indicate that the tensile behavior of HPFRCC using twisted fiber shows rate sensitivity while that using hooked fiber shows no rate sensitivity. The results also show that rate sensitivity in twisted fibers is dependent upon both fiber volume fraction and matrix strength, which influences the interface bond properties.
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
Kim, Dong joo (author) / El-Tawil, Sherif (author) / Naaman, Antoine E. (author)
Materials and Structures ; 42 ; 399-414
2008-05-21
16 pages
Article (Journal)
Electronic Resource
English
HPFRCC , Rate sensitivity , Twisted (Torex) fiber , High strength hooked fiber , Matrix composition , Fiber volume fraction Engineering , Building Materials , Civil Engineering , Operating Procedures, Materials Treatment , Mechanical Engineering , Theoretical and Applied Mechanics , Structural Mechanics
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
| British Library Online Contents | 2009
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
| Online Contents | 2008
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
| Online Contents | 2009
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
| Online Contents | 2008