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Editor’s Note: The following comments were submitted regarding the GMA Techline article “Geocell application,” from the April 2010 Geosynthetics.
Comment
From: Suprio
Re: Geocell on soft subgrade
In case if a layer of geocell is placed on a soft subgrade of say CBR value 1, then what is the method of determining the settlement envisaged after 1 layer of geocell have been placed & compacted with a infill soil of say ‘phi’ value of 35deg.
Response
From: GMA Techline
Re: Geocell on soft subgrade
The settlement calculations due to consolidation of the soft subgrade would be made as with any other situation. Of course, with only the light dead load of the filled geocell, it will likely be small.
In this case, I would consider a live load of a truck or construction/maintenance vehicle, and depending what you use, the settlement value will be greater and perhaps more realistic.
Comment
From: chandramouli s
Re: Geocell application
Sir, is it beneficial for providing geocell in the case of strong subgrade in pavement construction. Can you give me proper solution?
Response
From: GMA Techline
Re: Geocell application
There are a number of geosynthetic solutions for use in pavements on strong subgrades. These include geotextiles, geogrids, and geocells. The usual goal with strong subgrades is improved lifetime performance over the non-geosynthetic solution. There are separate design guidelines depending on the location of the geosynthetic within the cross section. The geosynthetics literature addresses such situations.
Comment
From: Surface Protection Man
Re: Geocell application
Thanks for all the information on geocells. I never knew just what the heck they were until reading this. Regarding geocells on everyday surface protection, however, can they degrade the properties of the surface with time? If so, then that explains a lot.
Response
From: Dr. Robert Koerner, GMA Techline
Geocells are regularly used as surface-wearing courses. The infill is important and it should be a stabilized material but the application is quite common. Do consult the website of geocell manufacturers in this regard.
Join the discussion
To post your thoughts on these comments, fill out the comment form on the bottom of the article “Geocell application,” or send your coments to editor Ron Bygness at rwbygness@ifai.com.