Common Mixing Ratios:
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The cement-sand ratio refers to the proportion of cement to sand in a mortar mix. For pool construction, common ratios are 1:3 (stronger) or 1:4 (standard), meaning one part cement to three or four parts sand by volume.
The calculator uses simple ratio mathematics:
Where:
Explanation: The calculation converts cement quantity to the corresponding sand quantity based on your selected ratio.
Details: Correct cement-sand ratio ensures proper strength, workability, and durability of the pool base. Too much cement can cause cracking, while too little weakens the structure.
Tips: Enter the number of cement bags you plan to use and select your desired mix ratio (1:3 for stronger mix, 1:4 for standard).
Q1: Which ratio is better for pool base?
A: 1:3 provides stronger mortar but is harder to work with. 1:4 is standard for most pool applications.
Q2: Should I add water to the calculation?
A: Water is typically added until the mix reaches workable consistency (about 0.5 part water per 1 part cement).
Q3: How much area does one bag cover?
A: One 50kg cement bag with 1:4 ratio covers about 0.5m² at 50mm thickness.
Q4: Can I use this for pool walls?
A: Yes, but walls often require stronger mix (1:2 or 1:3) depending on design.
Q5: How long should the mix cure?
A: Minimum 7 days before filling pool, with proper moist curing for best results.