Site investigation · Laboratory: rock & aggregates

Ten percent fines value (wet/dry strength) calculator

Load giving 10% fines from a test at x kN producing y% fines: F = 14x/(y + 4); wet/dry variation.

Standard: AS 1141.22 · BS 812-111

Open the live calculator → All site investigation calculators

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

InputValueUnit
Dry test load200kN
Dry fines produced8.6%
Wet test load150kN
Wet fines produced9.4%
Min wet strength100kN
Max wet/dry variation35%

Worked example — results

ResultValueUnit
Dry strength222.2kN
Wet strength156.7kN
Wet/dry variation29.48%
Dry: load for 10% fines (8.6%)222 kNmin 100 kNWet: load for 10% fines (9.4%)157 kNmin 100 kNWet/dry variation29.5 %max 35 %00.5limit 1.0Variation ≤ max0.84 PASS
Diagram for the worked example

Method, formulas and assumptions

Related site investigation calculators

For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.