Improved Mechanical Performance: Shear Behaviour of Strain-hardening Cement-based Composites (SHCC)

Retardation of moisture and gas ingress associated with important degradation mechanisms in cement-based composites in general and reinforced concrete or prestressed concrete in particular is an ongoing research focus internationally. A dense outer layer is generally accepted to significantly enhance durability of structural concrete. However, cracking leads to enhanced ingress, unless cracks are restricted to small widths. Strain-hardening cement-based composites (SHCC) make use of fibers to bridge cracks, whereby they are controlled to small widths over a large tensile deformation range. In this paper, SHCC shear behavior is studied, verifying that cracks which arise in pure shear are also controlled to small widths in these materials. Design of an Iosipescu shear test setup and specific SHCC geometry is reported, as well as results of a test series. A computational model for SHCC, based on finite element theory and continuum damage mechanics, is elaborated and shown to capture the shear behaviour of SHCC.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier.
• Authors:
  • van Zijl, Gideon P
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1241-1247
• Serial:
  • Cement and Concrete Research
  • Volume: 37
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Composite materials; Durability; Fiber composites; Fiber reinforced concrete; Microcracking; Reinforced concrete; Shear properties; Shear strain; Shear stress; Strain hardening
• Uncontrolled Terms: Cement composites
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01077062
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 28 2007 8:02AM