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Test results for "Hydrostar AG"
Property Unit Requirement Result
Compressive strength (initial) kPa ≥ 150 357.7
Dynamic impact resistance (mean failure energy) J ≥ 2.45 10.4
Creep resistance (residual thickness at 25 years/10°C) % ≥ 40% at 25 years/10°C 86.2
Cold bending at -30°C N/A No visible crack No visible crack
Tensile strength at yield kN/m ≥ 8 XD 9.5 Footnote (1)
elongation at break % ≥ 25 XD 27.5
anisotropy ratio   ≥ 0.5 0.99
OIT after 2 weeks minutes 5 14.2 Footnote (2)
dimensional change % ≤ 1 MD -0.6, XD -0.4
weight change % ≤ –0.1 -0.3
residual compression strength % ≥ 80 of initial 107
Heat aging (for 2 weeks) OIT after 2 weeks minutes  ≥ 5 14.2 Footnote (2)
dimensional change % ≤ 1 MD -0.6, XD -0.4
weight change % ≤ –0.1 -0.3
residual compression strength % ≥ 80 of initial 107
creep resistance after heat aging (residual thickness at 25 years/10°C % Class B: ≥ 40% 25 years/10°C 88.4
Resistance to alkaline environment appearance N/A No visible crack No visible crack
residual compression strength % ≥ 80 of initial 98.7
bending resistance N/A No visible crack No visible crack
Hydraulic transmissivity (flow rate) m3/h∙m ≥ 1.33 127
Geometrical Properties:
Orientation of the dimples - Report value Diagonal MD/XD Footnote (1)
Number of dimples per unit area dimples/m2 Report value 1 554
Overall thickness mm Report value 6.96
Sheet thickness mm Report value 0.82
Hollow core thickness mm Report value 6.14
Anchorage performance anchorage efficiency kN/washer Report value 0.29
kN/plug Report value 0.31