I will check my archives and get back to you shortly regarding possible tip and sleeve values for sandy clay.
A better approach for examining the CPT data with respect to soil type might be to look at the dissipation plots. If the dissipations are relatively quick then you could assume that the soil contains more/some/lots of sand. (Sand is more permeable than clay, thus a faster dissipation) If the dissipations take quite long to reach equilibrium or the 50% dissipation mark then the sand content is most likely small and the soil is mostly clay or fine grained in nature. Hopefully a quick dissipation was performed at each rod connection.??
Most often in a saturated soils.....
A distinctive rise in the dynamic pore pressures would indicate the soil is clayey in nature, while a lower pore pressure response would indicate silt or possibly sandy type soils.
