4000 PSI Concrete Mix Ratio Calculator

October 30, 2024 by calculattor.com

Cement: ${cement.toFixed(2)} lbs

Sand: ${sand.toFixed(2)} lbs

Gravel: ${gravel.toFixed(2)} lbs

Water: ${water.toFixed(2)} lbs

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Here’s a comprehensive table detailing everything you need to know about the 4000 PSI concrete mix ratio, including the components, their proportions, weight, and yield.

4000 PSI Concrete Mix Ratio Table

Component	Proportion	Weight (lbs)	Cubic Feet per Yard	Total for 1 Cubic Yard
Cement	1 part	94	1	94 lbs
Sand	2 parts	100-120	1.5	200-240 lbs
Gravel (or Stone)	3 parts	1500-1800	2.5	4500-5400 lbs
Water	Varies (0.4 to 0.6)	8.34 (per gallon)	0.02 (for 1 gallon)	20-30 gallons (for 1 cubic yard)

Key Points:

• Total Proportions: A typical mix for 4000 PSI concrete is 1:2:3, meaning 1 part cement, 2 parts sand, and 3 parts gravel.
• Water-Cement Ratio: The water-cement ratio is crucial for strength and durability. A ratio of 0.4 to 0.6 is often used, which means that for every pound of cement, you should use 0.4 to 0.6 pounds of water.
• Weight Considerations:
  • The weight of sand can vary based on moisture content and type (e.g., fine vs. coarse).
  • The weight of gravel also varies depending on its size and type.
• Yield: This mix generally yields approximately 1 cubic yard of concrete.

Example Calculation:

To prepare 1 cubic yard of 4000 PSI concrete:

• Cement: 94 lbs (1 bag)
• Sand: ~200-240 lbs (adjust based on specific gravity)
• Gravel: ~4500-5400 lbs (adjust based on specific gravity)
• Water: 20-30 gallons (depending on the water-cement ratio)

Additional Considerations:

• Admixtures: Depending on the application, you might add admixtures such as superplasticizers or retarders to enhance performance.
• Mixing: Ensure thorough mixing to achieve a uniform consistency and strength.
• Testing: It’s advisable to test the concrete for compressive strength before full-scale application to ensure it meets the 4000 PSI requirement.