Prediction of steel fibre reinforced concrete under flexure from an inferred fibre pull-out response

Prudêncio, L.

doi:10.1617/14311

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2020

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“…Thus, a rigid body motion of the two parts of the specimen is the dominant mechanism such that a crack width law can be assumed. This is in line with Prudencio et al 24 and the AFGC‐Recommendation 23 . The residual width of the other cracks depends on the deformation degree reached before, which could be elastic or elastoplastic.…”

Section: Resultssupporting

confidence: 90%

Influence of production parameters on the fiber geometry and the mechanical behavior of ultra high performance fiber‐reinforced concrete

Maryamh

Hauch

Redenbach

et al. 2020

Structural Concrete

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In this paper, the relationship between production parameters of ultra high performance fiber‐reinforced concrete (UHPFRC) and the spatial distribution and orientation of the steel fibers is investigated. UHPFRC specimens with varying fiber diameter, fiber volume fraction, and rheology of the mixture are produced. Additionally, casting is performed from the side or the middle of the formwork. Imaging by micro computed tomography allows for a statistical analysis of the spatial arrangement of the fibers in the test specimens. The flexural behavior and the load capacity of the specimens are analyzed by four point bending tests. The results of the bending tests are well explained by characteristics of the fiber systems determined from the image data.

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Section: Resultssupporting

confidence: 90%