1. What is Blockwork Mortar?

Blockwork mortar is a mixture of cement, sand, and water used to bind masonry blocks together in construction. The strength and workability depend on the correct ratio of materials.

2. How Does the Calculator Work?

The calculator uses these formulas:

Where:

• 1.33 — Standard factor for mortar volume
• 1440 — Cement density (kg/m³)
• 1600 — Sand density (kg/m³)
• ratio — Cement:sand mix ratio (e.g., 1:4)

Explanation: The formulas account for the volume of mortar needed and the density of materials to calculate weight requirements.

3. Importance of Proper Mixing

Details: Correct mortar mix ratios are crucial for structural integrity, workability, and durability of masonry work. Common ratios range from 1:3 (strong) to 1:6 (weak) cement:sand.

4. Using the Calculator

Tips: Enter mortar volume in cubic meters and the cement:sand ratio (just the second number, e.g., enter 4 for 1:4 mix). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical mortar ratio for blockwork?
A: 1:4 (cement:sand) is common for general blockwork, while 1:3 provides higher strength for load-bearing walls.

Q2: Why is the 1.33 factor used?
A: This accounts for the typical voids and workability needed in mortar, ensuring you have enough material.

Q3: How do I measure mortar volume?
A: Estimate based on wall area × joint thickness (typically 10mm) or use project specifications.

Q4: Can I use this for bricklaying?
A: Yes, though brickwork often uses slightly different ratios (typically 1:3 to 1:5).

Q5: Should I account for waste?
A: Yes, add 5-10% extra to account for spillage, mixing losses, and uneven surfaces.