Premium Grade C20 Concrete - 20N/mm² Strength

C20 Concrete (20N/mm²) has a lower compressive strength than C25 Concrete (25N/mm²). While C20 is suitable for many structural applications, C25 is typically specified for more demanding structures or where additional load-bearing capacity is required.

Yes, C20 Concrete is ideal for most domestic foundations, including house extensions, garden rooms, and garage foundations. Its 20N/mm² strength meets building regulations requirements for standard residential foundation applications.

For most structural applications, C20 Concrete should be reinforced with steel bars or mesh to enhance its tensile strength. The specific reinforcement requirements depend on the application, loading conditions, and structural design. Our technical team can provide guidance on appropriate reinforcement.

C20 Concrete typically develops sufficient strength for formwork removal within 24-48 hours. It achieves approximately 70% of its design strength after 7 days and continues to gain strength for up to 28 days to reach its full design strength of 20N/mm².

Yes, C20 Concrete is well-suited for domestic driveways. Its 20N/mm² strength provides adequate load-bearing capacity for typical vehicle traffic. We recommend a minimum thickness of 100mm with appropriate reinforcement for standard domestic applications.

C20 Concrete should be placed promptly after delivery and consolidated using vibration or tamping to remove air voids. The surface should be levelled and can be finished with a float or trowel depending on the desired texture. In hot weather, proper curing procedures should be followed to prevent rapid drying.

Yes, C20 Concrete is suitable for external applications. For enhanced durability in freeze-thaw conditions, proper air entrainment and curing are important. In severe exposure conditions or for critical applications, additional specifications may be required.