base reinforcement question
base reinforcement question
(OP)
how critical are the flexural stiffness and junction strength properties in base reinforcement? I see that woven polyester biaxial geogrids are becoming more prevalent, yet most specifications have the flex. stiffness and junction strength numbers that are obviously written around a punch and drawn polypropelene.
If the 2% strain and 5% strain values match up, can you use a woven polyester instead of the polypropelene?
If the 2% strain and 5% strain values match up, can you use a woven polyester instead of the polypropelene?





RE: base reinforcement question
With respect to your specific question, if by "base reinforcement" you mean that you are installing the geotextile below the base rock of a pavement section, then I would be most concerned with the amount of strain required to mobilize the strength. But then again if the geotextile is being installed below a temporary pavement, the strain may not matter much. If you could provide more information on you specific situation, I would be happy to comment some more, hope this helped some.
By the way, specifications should always define "Approved Equal". My definition was always "Determinations of whether a product is approved will be at the sole discretion of the Engineer." That way I always get what I'm looking for.
RE: base reinforcement question
There is another thread on here called "Comparison of HDPE and PVC COATED PET GEOGRID" which might be of interest to you.