INNOVATIONS
Establishing the Base
Mix designs for ready-mix concrete vary based on the required compressive strength, workability, and durability characteristics, and are generally categorized by their grade. The grades of concrete range from lower-strength grades like M7.5 to higher-strength grades like M70.
- Grade: M7.5 is considered low-strength concrete, often used for non-structural applications such as pavements, floors, and light foundations.
- Typical Strength: 7.5 MPa (or ~750 kg/cm²)
- Grade: M10 concrete is often used for foundation pads, drainage structures, and other non-critical applications.
- Typical Strength: 10 MPa (or ~1000 kg/cm²)
- Grade: M15 is used for light structural work such as concrete roads, pavements, and footing.
- Typical Strength: 15 MPa (or ~1500 kg/cm²)
- Grade: M20 is a standard mix used for medium-strength applications like columns, beams, and slab construction.
- Typical Strength: 20 MPa (or ~2000 kg/cm²)
- Grade: M25 is used for reinforced concrete structures where a medium level of strength is required.
- Typical Strength: 25 MPa (or ~2500 kg/cm²)
- Grade: M30 is used for structural applications that require higher strength such as beams, columns, and slabs.
- Typical Strength: 30 MPa (or ~3000 kg/cm²)
- Grade: M35 is used for highly durable, high-strength structural applications.
- Typical Strength: 35 MPa (or ~3500 kg/cm²)
- Grade: M40 is used for structural applications with very high strength, typically in large structures or areas subject to heavy loads.
- Typical Strength: 40 MPa (or ~4000 kg/cm²)
- Grade: M45 is used for high-strength structural components like beams, columns, and pavements.
- Typical Strength: 45 MPa (or ~4500 kg/cm²)
- Grade: M50 is used in highly demanding applications, such as heavy-duty structures in high-rise buildings, bridges, or dams.
- Typical Strength: 50 MPa (or ~5000 kg/cm²)
- Grade: M55 is used for applications requiring high-strength concrete, typically in specialized projects with high compressive strength requirements.
- Typical Strength: 55 MPa (or ~5500 kg/cm²)
- Grade: M60 is typically used in high-performance concrete applications requiring durability and extreme compressive strength.
- Typical Strength: 60 MPa (or ~6000 kg/cm²)
- Grade: M70 is ultra-high-strength concrete, used in specialized structures that require exceptional strength and durability.
- Typical Strength: 70 MPa (or ~7000 kg/cm²)