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creating my own dcp-cbr correlation

creating my own dcp-cbr correlation

creating my own dcp-cbr correlation

hello everyone
I know there are already many threads about CBR and DCP, but I didn't find a satisfactory answer
is the existing correlation between CBR and DCP are :
a- field dcp on natural soil and soaked lab cbr on compacted sample (ASTM d1883)?
b- field dcp on compacted soil and soaked lab cbr on compacted sample (ASTM d1883)?
c- field dcp on compacted soil and in-situ CBR in the same site and condition ?

and if I want to make a correlation between DCP and CBR for cemented soil ( gypseous soil , gypsum is a soluble salt ) which choice would be more logical and practical ( a and b would be remolded sample )?

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