ASTM D4355/D4355M-14(2018),Standard Test Method for Deterioration of Geotextiles by Exposure to Light, Moisture and Heat in a Xenon Arc-Type Apparatus.ASTM D4355/D4355M-14(2018) pdf free download.
ASTM D4355/D4355M-14(2018) covers the determination of the deterioration in tensile strength of geotextiles by exposure to xenon arc radiation, moisture, and heat.
Referenced Documents
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method;
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials;
G141 Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials;
4. Summary of Test Method
4. I Five specimens of a geotextile for the machine direction and for the cross-machine direction are exposed in a xenon arc device for each of the following times: 0(control specimens) 150. 300, and 500 h. The exposure consists of 120-min cycles Is follows: 90 min of light only at 65 +3″ C uninsulated black panel temperature and 50+10 % relative humidity, followed by 30 min of light plus water spray. (See Note 8.)
4.2 After each exposure period, the specimens are subjected to a cut or ravel strip tensile test. The average breaking strength in each direction is compared with the average breaking strength in each direction of the control specimens. The percent strength retained is plotted versus exposure period to produce a degradation curve for the specimens from each direction.
7. 1 Lot Sample-As a lot sample for acceptance testing, take at random the number of rolls of fabric directed in an applicable material specification or other agreement between the purchaser and the supplier. Consider rolls of fabric to be the primary sampling units. If the specification requires samplin during manufacture, select the rolls for the lot sample at uniformly spaced time intervals throughout the production period.