ISSN: 0149-6123
Page Count: 7

Crack Offset Corrections to Post-crack Performance Parameters Obtained from Third-point Loaded Fiber Reinforced Shotcrete Beams
Bernard, ES
TSE P/L,

Tutlu, E
University of Applied Science and Technology,

Diamant1idis, D

Abstract

Fiber Reinforced Shotcrete (FRS) is used as an economically competitive method of ground support in tunnel excavations throughout the world. Fibres are incorporated into this material to impart post-crack load capacity. Beam tests are commonly used to assess the post-crack performance of FRS but high within-set variability has hindered the usefulness of beam test data. A method of correcting performance data to account for the offset between the position of the crack and the center of the beam has been suggested as a means of improving within-batch variability for post-crack performance parameters obtained from third-point loaded beam tests. In this paper, an offset correction method has been applied to a large set of beam test data obtained as part of Quality Control testing for a tunnel-lining project to determine whether the method is effective in reducing within-batch variability.

Keywords:
fiber reinforced shotcrete, third-point beam testing, post-crack performance, variability

Paper ID: CCA10444J
DOI: 10.1520/CCA10444J
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