This is an archival version of the original KnowledgePoint website.

Interactive features have been disabled and some pages and links have been removed.

Visit the new KnowledgePoint website at https://www.knowledgepoint.org.

 

Revision history [back]

click to hide/show revision 1
initial version
RedR TSS gravatar image
RedR TSS

One option might be to reinforce and isolate the sub-grade with a geo-textile or something similar. If a conventional geo-textile is not available, you could see what similar local resources exist. Some grain sacks are made of woven slit-film, which is essentially a geo-textile. In Sri Lanka, we had a road project where Palmyra leaves were laid in a mat, with a lot of overlapping, and then topped by a few inches of crushed stone for a running surface. The fibres in the leaves, randomly cross-laid, accomplished the same effect. The geo-textile of fibrous material could be placed directly on the fine soil and then topped off with 15-25 cm of better material such as crushed stone, bank-run gravel, or whatever you can find. This approach won't eliminate the need for surfacing, but should reduce the required thickness.

Regards,

Dave Sacco

click to hide/show revision 2
No.2 Revision

One option might be to reinforce and isolate the sub-grade with a geo-textile or something similar. If a conventional geo-textile is not available, you could see what similar local resources exist. Some grain sacks are made of woven slit-film, which is essentially a geo-textile. In Sri Lanka, we had a road project where Palmyra leaves were laid in a mat, with a lot of overlapping, and then topped by a few inches of crushed stone for a running surface. The fibres in the leaves, randomly cross-laid, accomplished the same effect. The geo-textile of fibrous material could be placed directly on the fine soil and then topped off with 15-25 cm of better material such as crushed stone, bank-run gravel, or whatever you can find. This approach won't eliminate the need for surfacing, but should reduce the required thickness.

Regards,

Dave Sacco Dave