Rotation capacity of self-compacting steel fibre reinforced concrete beams

Title

Rotation capacity of self-compacting steel fibre reinforced concrete beams

 Author

Schumacher, P.
Walraven, J.C.
Den Uijl, J.A.
Bigaj-van Vliet, A.

Faculty

Civil Engineering and Geosciences

 Department

Design and Construction

 Date

2009-06-18

 Abstract

Steel fibres are known to enhance the toughness of concrete in compression and in tension. Steel fibres also improve the bond properties between concrete matrix and reinforcing steel bars. In order to investigate the effect of steel fibres on the rotation capacity of reinforced concrete members, four simply supported beams were loaded in three-point bending up to failure (steel bar rupture or concrete crushing). Test variables were fibre content and axial normal force. Remarkably, the specimens with conventional reinforcement had a larger rotation capacity than those with conventional reinforcement and fibres. This decrease in deformation capacity is explained by localization of the deformations in one large crack in case of the reinforced concrete (RC) specimens with steel fibres, compared to several large cracks in case of the RC specimens. A model to calculate the rotation capacity of self-compacting steel fibre reinforced concrete (SCSFRC) members is presented and validated against the beam test results.

 Subject

rotation capacity
self-compacting steel fibre reinforced concrete
strain localization

 To reference this document use:

http://resolver.tudelft.nl/uuid:8a1451e0-a84b-4d18-a0b9-fec0b389de81

 ISSN

0046-7316

 Source

Heron, 54 (2/3)

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

(c) 2009 P. Schumacher; J.C. Walraven; J.A. den Uijl; A. Bigaj-van Vliet
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