Influence of ECC Ductility on the Diagonal Tension Behavior (Shear Capacity) of Infill Panels Experimental Investigation of Shear Dominant RC Beam Repaired with DFRCC at Cover Thickness

Title: Influence of ECC Ductility on the Diagonal Tension Behavior (Shear Capacity) of Infill Panels
Experimental Investigation of Shear Dominant RC Beam Repaired with DFRCC at Cover Thickness
Author(s): Yun Yong Kim, Jeong-Su Kim, Gee Joo Ha, Jin-Keun Kim
Paper category : conference
Book title: International RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites in Structural Applications
Editor(s): G. Fischer and V. C. Li
Print-ISBN: 2-912143-93-4
e-ISBN: 2912143942
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 403 - 410
Total Pages: 8
Nb references: 6
Language: English

Abstract: This preliminary study explores how material ductility affects the diagonal tension behavior of infill panels. A number of studies have suggested that the use of high ductile material, such as Engineered Cementitious Composites (ECCs), significantly enhances the shear capacity of structural elements, even without shear reinforcements. The present study emphasizes that the shear capacity of infill panels can be increased by using a unique strain-hardening ECC reinforced with short random fibers of poly(vinyl alcohol). With normal concrete used as the reference material, a series of experiments were performed to assess the failure mode of panels subjected to knife-edge loading. The results show that ECC specimens show a more ductile failure mode and a higher load-carrying capacity than ordinary concrete or fiber-reinforced composite panels. The superior ductility of ECC is clearly reflected by micro-crack development, which suppresses localized drastic fractures typically observed in concrete specimens. This enhanced structural performance indicates that the application of ECC for an in-filled frame panel effectively enhances the seismic resistance of the reinforced concrete frames currently in service.

Online publication: 2005-05-15
Classification: Seismic Design, Shear and Torsion
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.044