Tag: CBR
-
CBR value – road aggregate thickness correlation
After a long search I’ve finally found a direct correlation between CBR and gravel thickness for unpaved gravel roads. I’ve discovered that often wind farms are built in areas with a low (<5%) to very low CBR. Somehow empirically, we’ve started with a standard 20 cm layer of gravel. We’ve learned the hard way that…
-
Geotextile vs Geogrid: which is the best solution?
This is a debate we are living each time we have to build internal roads on soils with a low (<5) to very low (<2) CBR. Basically when the others alternatives (mainly soil substitution and soil improvement) are not feasible we are adopting two different solution, either a strong geotextile with reinforcement and separation properties…