1. What is Cement Sand Mortar?

Cement sand mortar is a construction material used for masonry work, plastering, and other building applications. It consists of cement, sand, and water mixed in specific proportions to achieve desired strength and workability.

2. How Does the Calculator Work?

The calculator uses these equations:

Where:

• Volume — Total volume of mortar needed (in cubic meters)
• Ratio — Cement to sand ratio (e.g., 4 for 1:4 mix)
• 1.33 — Dry volume factor (accounts for voids in sand)
• 1440 — Density of cement (kg/m³)
• 1600 — Density of sand (kg/m³)

3. Importance of Proper Mix Ratio

Details: The right cement-sand ratio ensures proper strength, workability, and durability of the mortar. Common ratios are 1:3 (strong) to 1:6 (weaker but more economical).

4. Using the Calculator

Tips: Enter the total volume of mortar needed and your desired cement:sand ratio (e.g., enter 4 for 1:4 mix). The calculator accounts for dry volume and material densities.

5. Frequently Asked Questions (FAQ)

Q1: What are common cement-sand ratios?
A: For masonry: 1:4 to 1:6. For plastering: 1:3 to 1:4. For flooring: 1:2 to 1:3.

Q2: Why multiply by 1.33?
A: This accounts for the dry volume factor - mortar volume increases when dry materials are mixed with water.

Q3: How do I calculate volume needed?
A: Volume = Area × Thickness. For example, 10m² wall with 12mm plaster: 10 × 0.012 = 0.12m³.

Q4: Can I use this for concrete?
A: No, this is for mortar only. Concrete requires additional calculations for aggregate.

Q5: How much water should I add?
A: Water is typically 20-25% of cement weight, but adjust for desired workability.