Lime Application Calculator

Enter project details and press Calculate to see lime quantity, bags, and cost. Exports unlock after the first calculation.

Inputs

Treatment area

Surface to be treated.

Area unit

Converted internally to m².

Treatment depth

Stabilized layer thickness.

Depth unit

Converted internally to meters.

Dry soil density (kg/m³)

Use lab or field dry density.

Target lime content (%)

Percent of dry soil mass.

Lime type

Type affects CaO-equivalent factor.

Type factor (CaO-equivalent)

Hydrated ~0.76, quicklime ~0.93 (typical).

Product purity (%)

Accounts for non-reactive material.

Wastage allowance (%)

Spillage, wind loss, handling.

Bag weight (kg)

Used to round up bag count.

Cost per bag (optional)

Currency-agnostic input.

Water per kg (L/kg, optional)

For slurry mixing or moisture addition.

Reset

Example Data Table

These example ranges help with early estimates. Always confirm with lab testing and project specifications.

Material / Condition	Typical lime content (%)	Typical dry density (kg/m³)	Notes
Low-plasticity silt	2–4	1500–1750	Often improves workability and reduces moisture sensitivity.
Medium-plasticity clay	3–6	1550–1850	Common for subgrade modification and strength gain.
High-plasticity clay	5–10	1600–1900	May need higher content and longer mellowing time.
Granular soils	0–2	1700–2050	Often limited benefit; check suitability first.

Formula Used

1 Convert units:

Area to m², depth to m

2 Treated volume:

V = A × d

3 Dry soil mass:

M_soil = V × ρ_dry

4 Target lime (CaO-equivalent):

M_target = M_soil × (p / 100)

5 Product lime required:

f = (Purity/100) × TypeFactor
M_product = M_target / f
M_{with waste} = M_product × (1 + Waste/100)

6 Bags and cost:

Bags = ceil(M_{with waste} / BagWeight)
Cost = Bags × CostPerBag

How to Use This Calculator

Measure the treatment area and choose the correct unit.
Enter the stabilization depth based on design lift thickness.
Use a realistic dry density from field tests or specifications.
Set a target lime percentage from mix design or guidance.
Select lime type and adjust type factor if your product differs.
Enter purity and wastage to reflect real site conditions.
Provide bag weight and optional cost for procurement planning.
Press Calculate, review results, then export CSV or PDF.

Inputs

Example Data Table

Formula Used

How to Use This Calculator

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