Tensile strength, Elongation
strength, Permeance
strength, Permeability strength and Adhesion strength tests are generally
conducted to find the chemical and physical properties of the materials. But
the question stands very doubtfully, whether obtained results will stay good for
the materials which are in the service condition?
Considering this, the same test
will be repeated after subjecting the material to the several environments in
LAB and the result will be provided. Below are the standards which says that
what shall be the conditions for which material shall be subjected for particular
test parameters:
|
Tensile
|
Method of ASTM
|
|
Max Stress at 23°C
|
D2370
|
|
Max Stress at -18°C
|
D2370
|
|
Tensile retention after aging (Carbon Arc)
|
C957
|
|
Tensile Strength at 23°C
|
D412
|
|
Tensile Strength at -18°C
|
D412
|
|
Tear Resistance
|
D624
|
|
Elongation
|
|
|
Break at 23°C
|
D2370
|
|
Break at -18°C
|
D2370
|
|
Break after 1000 hours Aging (Xenon Arc) at 23°C
|
D2370
|
|
Break after 1000 hours Aging (Xenon Arc) at -18°C
|
D2370
|
|
Low Temperature Crack Bridging
|
C1305
|
|
Extensibility After Heat Aging
|
C1522
|
|
Recovery from elongation
|
|
|
Elongation retention after aging (Carbon Arc)
|
C957
|
|
Flexibility at 0°C
|
D2939
|
|
Elongation at 23°C
|
D412
|
|
Elongation at -18°C
|
D412
|
|
Elongation after aging (oven)
|
D412
|
|
Permanent Set at Break
|
D412
|
|
Elongation after 1000 hours aging (QUV) at 23°C
|
D412
|
|
Elongation after 1000 hours aging (QUV) at -18°C
|
D412
|
|
Behavior at 60°C
|
D6511
|
|
Pliability at 0°C
|
|
|
Low Temperature Flexibility after aging 1000 hrs.
(Xenon Arc)
|
D522
|
|
Permeance/Permeability
|
|
|
Permeance
|
D1653
|
|
Water Vapor Permeability
|
E96
|
|
Aging
|
|
|
1000 hours Aging (Xenon Arc)
|
D4798
|
|
Ozone Resistance
|
D1149
|
|
5000 hours Aging (QUV)
|
|
|
Adhesion Testing
|
|
|
Adhesion in Peel After Water Immersion
|
C794
|
|
Adhesion
|
D429
|
|
Optical Test for Adhesion in Peel
|
C836
|
After condition the material
(specimen) the test shall be conducted, and the results will be compared to the
un-conditioned parameters and the difference in result. Finally, result is
expressed in terms of how much % of strength is obtained in the un-conditioned
strength after conditioning the materials.
Ex. A waterproofing membrane is
tested for elongation to break and the result was 300%. After conditioning the
same membrane, it was again tested and obtained the result of 210%. Then the
elongation retention strength of the membrane will be 70%.
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