Characterising the time-dependant behaviour on the single fibre level of SHCC: Part 2: The rate effects on fibre pull-out tests |
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| Authors: | William P Boshoff Viktor Mechtcherine Gideon PAG van Zijl |
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| Affiliation: | aDivision for Structural Engineering, University of Stellenbosch, Private Bag X1, Stellenbosch, South Africa;bFaculty of Civil Engineering, Technical University Dresden, Germany;cFaculty of Architecture, Delft University of Technology, The Netherlands |
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| Abstract: | This paper is the second part of a two paper series about the time-dependant behaviour of Strain Hardening Cement-based Composite (SHCC) on the single fibre level. Having dealt with mechanisms of creep in SHCC in the first part, this paper reports single fibre pull-out tests that were done to investigate the effect of the pull-out rate on the mechanical response of the interface between the fibre and the matrix. It was found that not only the pull-out resistance increased with an increase of the pull-out rate but the probability of fibre rupture during pull-out as well. Another important finding was that the interfacial shear resistance and slip-hardening coefficient are not only dependant on the pull-out rate, but also the embedment length. |
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| Keywords: | Fibre reinforcement Pull-out strength Tensile properties Rate effects SHCC |
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