20/03/2026
✅ Correct Mix Ratio
- Cement : Sand : Aggregate = 1 : 1.5 : 3
- Water–Cement Ratio (W/C) = 0.45 – 0.50
- Water Required ≈ 22 – 25 liters per 50 kg cement bag
📦 Material Quantity (Per 1 Bag Cement – 50 kg)
- Cement → 1 Bag (50 kg)
- Sand → 1.5 Parts
- Aggregate → 3 Parts
- Water → 22 – 25 Liters
🔑 Key Points for Good Concrete
- Use clean materials
- Mix thoroughly and uniformly
- Use a vi****or for compaction
- Cure for minimum 7 days
M20 concrete is one of the most commonly used grades in construction, especially for columns, beams, slabs, and footings. The standard mix ratio for M20 concrete is 1 : 1.5 : 3 (Cement : Sand : Aggregate) with a water–cement ratio of 0.45–0.50. For one 50 kg cement bag, approximately 22–25 liters of water is required.
To achieve strong and durable concrete, always use clean materials, ensure proper mixing, perform vibration for compaction, and cure the concrete for at least 7 days. Proper workmanship and correct proportions help the structure reach its required 20 MPa strength.
Follow these basic guidelines to produce high-quality and long-lasting concrete for your construction projects.
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