Elevating Material Ductility to Structural Performance of Steel Anchoring to ECC

Title: Elevating Material Ductility to Structural Performance of Steel Anchoring to ECC
Author(s): Shunzhi Qian, Victor C. Li
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: 529 - 537
Total Pages: 9
Nb references: 18
Language: English

Abstract: Concrete fracture failure is often observed at steel/concrete interaction zones, such as steel anchoring to concrete and hybrid structure connections, under mechanical loading. Steel anchoring to concrete is the focus of this investigation due to its wide application in civil infrastructure. The use of High Performance Fiber Reinforced Cementitious Composites (HPFRCC) at anchoring zone should suppress such failure mode and enhance the overall structural performance. However, this proposed material solution must be demonstrated and appropriate design equations should be provided before its adoption in practice. In this article, a class of HPFRCC -- the micromechanically designed Engineered Cementitious Composite (ECC) with a tensile ductility around three hundred times that of normal concrete is shown to eliminate the brittle fracture mode by developing extensive multiple micro-cracks in ECC. This modification in behavior led to higher load capacity and structural ductility, thus enhancing overall structural response. A preliminary design equation for the shear capacity of anchors in ECC accounting for material ductility of ECC will be derived. The enhancement in structural response through material ductility engineering is expected to be applicable to a wide range of engineering structures where steel and concrete comes into contact.

Online publication: 2005-05-15
Classification: Special Considerations
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.057