Cement Stabilized Sand Calculator For Pavers

Cement Stabilized Sand Formulas:

\[ \text{Cement (kg)} = \left[\text{Volume (m³)} \times \left(\frac{1}{1 + \text{sand ratio}}\right)\right] \times 1440 \] \[ \text{Sand (kg)} = \left[\text{Volume (m³)} \times \left(\frac{\text{sand ratio}}{1 + \text{sand ratio}}\right)\right] \times 1600 \]

Volume:

m³

Sand Ratio:

(e.g., 12)

Cement Density:

kg/m³

Sand Density:

kg/m³

Cement Required:

Sand Required:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Cement Stabilized Sand?

Cement stabilized sand is a mixture of sand, cement, and water used as a base material for pavers. It provides a stable, durable foundation that resists shifting and settling while allowing for proper drainage.

2. How Does the Calculator Work?

The calculator uses these formulas:

\[ \text{Cement (kg)} = \left[\text{Volume (m³)} \times \left(\frac{1}{1 + \text{sand ratio}}\right)\right] \times \text{cement density} \] \[ \text{Sand (kg)} = \left[\text{Volume (m³)} \times \left(\frac{\text{sand ratio}}{1 + \text{sand ratio}}\right)\right] \times \text{sand density} \]

Where:

Volume — Total volume of mixture needed (m³)
Sand Ratio — Proportion of sand to cement (e.g., 12:1)
Cement Density — Typically 1440 kg/m³
Sand Density — Typically 1600 kg/m³

3. Importance of Proper Mixing

Details: Proper cement-sand ratio is crucial for achieving the right balance between strength and workability. Too much cement can make the mix brittle, while too little reduces stability.

4. Using the Calculator

Tips: Enter the total volume needed, your desired sand:cement ratio (common ratios range from 10:1 to 15:1), and material densities (defaults provided). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical sand ratio for paver bases?
A: Common ratios range from 10:1 to 15:1 (sand:cement), with 12:1 being a frequently used standard.

Q2: How much water should I add?
A: Typically 5-10% of total weight, enough to achieve a damp mixture that holds its shape when squeezed.

Q3: How thick should the base layer be?
A: Usually 100-150mm (4-6 inches) for pedestrian areas, thicker for vehicular traffic.

Q4: Can I use this mix for the setting bed?
A: No, the setting bed typically uses pure sand without cement for better adjustability.

Q5: How long does it take to cure?
A: Initial set occurs in 24 hours, but full strength develops over 7-28 days.