cbr correlation

[alexrout]

I use a light cone penetrometer to know if an airplane could land. I have allready used a clegg in buildings sites and in my laboratory I have a CBR machine. On road buildings, in france, i use the "test à la plaque". Have you some correlations between this differrent tests?
thanks a lot

 

[rjmc]

Could you re-state your question, it is a little confusing. If it's about test correlations, in civil, we have the ASTM and AASHTO standards. They correlate with each other very well. What is done in France, I don't know. As for the Clegg, I have not heard of that one. But the CBR was originally for runways, and was later adapted to road construction.