Issue 60

S. Ahmed et alii, Frattura ed Integrità Strutturale, 60 (2022) 243-264; DOI: 10.3221/IGF-ESIS.60.17

(a)

(b)

(c) Figure 13: Typical failure modes of UHPC concrete sleepers at rail seat section: (a) S0-No.1; (b) S0-No.2; (c) S0-No.3.

First cracking

Failure load Fr B > 325 kN 370.06 kN 374.62 kN 362.71 kN 369.13 kN 424.32 kN 421.15 kN 420.15 kN

Sleeper series

Number

Failure mode

Fr

r > 130 kN

Shear and compression failure Failure at the edge Flexural-Shear failure Shear and compression failure Flexural-shear failure Shear and compression failure

SN

No.1 No.2 No.3 Avg. No.1 No.2 No.3

251.5 kN 242.4 kN 258.3 kN 250.73 kN 264.5 kN 287.9 kN 255.7 kN 269.4 kN

S0

Avg. 422.05 kN Table 6: Results of static bending test at rail seat section.

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