Nonwoven Geotextile
Woven polypropylene geotextiles
Applications:
Nonwoven polyester geotextiles are particularly useful for use in high temperature applications such as laying within hot asphalt as a reflective cracking inhibitor. Polyester fibres are generally resistant to temperatures up to about 240 degrees C. In this application, not only is the high temperature resistance advantageous, but the three-dimensional structure of the textile absorbs cut-back bitumen and similar, very effectively, thus promoting the 'waterproofing' of the repaired surface beneath.
Filtration criteria:
If possible, although not critical, the textile should be chosen for filtration with O90 < 4.D90
Permeability criteria: K geotextile > 10.K soi
Strength Criteria:
There are no design equations for strength in permanent road structures because the textile does not perform a strength function. It is only in access roads that subgrade deformation utilizes a geotextile’s strength.
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