Enter the moisture content at each blow count from the liquid limit test (ASTM D4318). The flow curve is a least-squares line of moisture content against log10(blows); the liquid limit is its value at 25 blows.
Demo:
Flow Curve Data
| Blows, N | Moisture, w (%) |
|---|
Additional Limits (optional)
Needed for the Plasticity Index (PI).
Needed, together with PL, for the Liquidity Index (LI).
Results
Liquid Limit, LL
-
% at N = 25
Flow Index, If
-
% per log cycle
Plasticity Index, PI
-
%
Liquidity Index, LI
-
Formulation
Flow curve: \( w = -I_f \log_{10}(N) + C \) (least squares on \( \log_{10} N \)).\( LL = w \) at \( N = 25 \), \( PI = LL - PL \), \( LI = \dfrac{w_n - PL}{PI} \).
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