Extruded Geogrids versus Coated Polyester Knit Geogrids

[hhan210]

Hello all,

New to the forum and looking for your advice.

I am looking for analysis or information on the performance comparisons between extruded, hole punched polypropylene geogrids versus PVC coated, high-tenacity polyester knitted geogrids. Advantages and disadvantages and such. Is there a preference in the industry?

Any resources or links that anyone can recommend?

Really appreciate any guidance. Thanks.

 

[oldestguy]

Don't know these terms, but if "knitted" means a material that can stretch easily, no way for using it for earth retention use. You want high strength with minimum stretch.

 

[hhan210]

There are geogrid products on the market that are made of extruded sheet of polypropylene that is hole punched to create the apertures.

The other product is a knitted polyester "skeleton" fabric which is then coated with PVC or other polymer.

I was hoping to find information on the comparisons between the two.

THanks

 

[EireChch]

I have heard of both but have no clients of one is better than the other. The only care I have is if the manufacture can guarantee a tensile capacity etc

 

[Doctormo]

High strength polyester soil reinforcement is a low creep product with well defined design values. Polypropylene is a high creep product so ultimate strength has to be factored down quite a bit to obtain a safe load capacity

Depends on what you want to do with the materials, wall or slope reinforcement vs. road base reinforcement?