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Test Results for "DELTA®-MS" Drainage Membrane

Property

Unit

Requirement

Result

Compressive strength (initial)

kPa

150

223

Dynamic impact resistance (mean failure energy)

J

≥ 2.45

8.3

Creep resistance (residual thickness at 25 years/10°C)

%

≥ 40% at 25 years/10°C

77.5

Cold bending at -30°C

N/A

No visible crack

No visible crack

Tensile strength

at yield

kN/m

≥ 8

XDFootnote (1) 8.1

elongation at break

%

≥ 25

XD 29.8

Anisotropy ratio

N/A

≥ 0.5

1.1

tensile strength in print area

%

≥ 90% of tensile strength

100%

Heat aging for 2 weeks

dimensional change

%

≤ 1

MDFootnote (1) -0.6, XD -0.5

weight change

%

≤ -0.1

0.0

residual compression strength

%

≥ 80 of initial

107.8

Resistance to alkaline environment

appearance

N/A

No visible crack

No visible crack

residual compression strength

%

≥ 80 of initial

101.5

cold bending at -30°C

N/A

No visible crack

No visible crack

 

Geometrical properties

Orientation of the dimples

-

Report value

Diagonal

Number of dimples per unit area

dimples/m2

Report value

1 560

Overall thickness

mm

Report value

8.43

Sheet thickness

mm

Report value

0.48

Hollow core thickness

mm

Report value

7.95

Anchorage performance anchorage efficiency

kN/anchor

Report value

0.95