Trennen

Fritz, Alfred Herbert; Förster, Ralf; Hoffmeister, Werner; Kühn, Klaus-Dieter; Schulze, Günter

doi:10.1007/978-3-662-46555-4_4

Cited by 1 publication

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Section: Resultsmentioning

confidence: 99%

“…Due to the large thickness of 10 cm and the inhomogeneous material, an abrasive cutting jet is selected. 48 Fine-grained garnet sand is added to the high-pressure water jet. During cutting the cutting jet pushes overburden material ahead.…”

Section: Quality Of the Cutsmentioning

confidence: 99%

“…During cutting the cutting jet pushes overburden material ahead. Due to friction it loses energy with increasing penetration depth, 48 so that it drifts away and yields distinct trailing grooves. The higher the cutting speed, the greater the cutting radius and the thicker the material, the greater the groove tracking and the depth F I G U R E 8 Crack pattern and distances from the center along with 5%-and 95%-quantiles and calculated stress over the section with and without consideration of roughness scatter and width of the grooves are.…”

Section: Quality Of the Cutsmentioning

confidence: 99%

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Steel fiber reinforced concrete tensile testing with eliminated lateral wall effect

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Mark

2022

Structural Concrete

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A test rig and a novel experimental procedure are introduced and qualified to obtain realistic tensile strength of steel fiber reinforced concrete specimen with supercritical fiber contents from direct tensile tests. To eliminate the wall effect an optimal shape is found employing the method of tension triangles that ensures uniformly distributed stresses throughout. By water jet cutting an initially rectangular casted specimen is tapered at the center. The resulting bone-shaped specimen replicates the true manufacturing conditions of the component regarding fiber distribution and orientation. Accuracy of load introduction and surface quality are monitored tracking eccentricities and slip.Both are found strictly limited and without impact on the maximum experimental residual tensile strength of 2.87 MPa on average with a low scatter of 15%. Employing flexural bending tests from the same concrete batch, a conversion factor to the direct tensile test of β = 0.38 was found for the first time.

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Section: Resultsmentioning

confidence: 99%

Section: Quality Of the Cutsmentioning

confidence: 99%

Section: Quality Of the Cutsmentioning

confidence: 99%

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