1. What Are Cement Mix Ratios?

Cement mix ratios determine the proportion of cement to sand (for mortar) or cement to sand to aggregate (for concrete). These ratios ensure the right strength and workability for different construction applications.

2. How Does the Calculator Work?

The calculator uses standard mix ratios:

Where:

• First number — Cement parts
• Second number — Sand parts
• Third number (concrete only) — Aggregate parts

Explanation: The calculator scales the ratio based on your input cement amount while maintaining the proportion.

3. Importance of Proper Mixing

Details: Correct ratios ensure adequate strength, durability, and workability. Too much cement makes mixes brittle, while too little reduces strength.

4. Using the Calculator

Tips: Select mix type (mortar/concrete), choose standard ratio, and enter cement amount. The calculator will show required sand and aggregate amounts.

5. Frequently Asked Questions (FAQ)

Q1: Which ratio should I use for wall plastering?
A: For general plastering, use 1:4 (cement:sand) mortar mix. For external walls, 1:6 may be used.

Q2: What's the strongest concrete mix ratio?
A: 1:1.5:3 provides higher strength than 1:2:4, suitable for structural elements like beams and columns.

Q3: Can I adjust ratios based on conditions?
A: Yes, ratios may vary based on sand quality, desired strength, and environmental conditions.

Q4: How much water should be added?
A: Typically 20-25% of cement weight, but enough to achieve workable consistency without being too wet.

Q5: Are these ratios by volume or weight?
A: Standard ratios are by volume, but for precision (especially in large projects), weight measurements are recommended.