C25 Concrete Mix Ratio

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TYPES OF CONCRETE

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A worker in a red shirt mixes gray concrete in a large metal tub with a hoe on a sandy construction site, with buckets in the background.

C25 Concrete Mix | The Ideal Flooring Solution

Also called ST2 concrete, it features a moderate cement concentration, placing its ST2 concrete strength in the midrange; 25 Newtons, to be exact. With this strength, it can withstand heavy shocks and adverse weather conditions. Its reduced water content results in a drier, stronger ST2 concrete, well-suited for general domestic tasks.

Choose Pro-Mix’s C25 concrete mix for robust foundation filling. However, this versatile mix finds utility in various applications beyond its primary use.

As one of the leading C25 concrete suppliers, Pro-Mix Concrete has carefully crafted the impeccable C25 material mix ratio in the UK. We’re readily available to provide guidance whenever you require it. For a complimentary estimate on C25 mix concrete London / ST2 concrete London, reach out to our team.

If you're unsure about the required quantity, our C25 concrete mix ratio calculator is at your disposal to assist you!

How’s Concrete Mix C25 Good For Your Project?

C25 concrete / ST2 concrete proves its diverse list of advantages by serving a wide range of domestic and commercial purposes.

  • Increased Strength and Sturdiness

    ST2 concrete mix ratio stands out by delivering superior compressive strength when compared to lower-grade mixes.

  • Enhanced Durability

    Thanks to its optimal C25 mix ratio, it exhibits remarkable durability. Whether used indoors or outdoors, it can endure challenging environmental factors such as temperature fluctuations and exposure to chemicals.

  • Improved Workability

    Balancing cement, fine gravel, and coarse particles enhances workability. This makes it easier for construction professionals to manage and manipulate during pouring, leveling, and finishing tasks.

  • Economical Choice

    C25 offers cost-effective advantages by providing sufficient strength while using comparatively less cement. This optimised mix design trims material costs without compromising overall construction quality.

  • Strengthened Flexural Performance

    Its enhanced flexural strength makes it an excellent choice for structural elements like beams and slabs that undergo bending loads. This ability allows it to withstand bending stresses and resist cracking.

Is C25 Concrete Mix Any Good
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Increased Freeze-Thaw Resilience

Notably, C25 concrete displays heightened resistance to freeze-thaw cycles. This resilience is valuable in cold climates where water freezing within the concrete can cause damage. The reduced permeability and proper air entrainment guarantee it can withstand freeze-thaw cycles without significant harm.

  • Minimized Shrinkage

    C25 concrete's usage reduces the risk of shrinkage-related cracks that can decrease concrete's structural integrity. By doing so, it contributes to a more robust infrastructure.

  • Consistent Performance

    Precise mix proportions result in uniform performance across different batches. For large-scale construction ventures, this consistency is pivotal, enabling effective planning and construction while minimising unexpected challenges.

  • Environmentally Friendly

    The optimised C25 mix ratio design promotes environmental sustainability by using less cement without compromising stability. Its extended lifespan and resistance to deterioration further contribute to its low overall environmental impact.

  • Time Efficiency

    The concrete C25 mix ratio in the UK balances workability and setting time. This provides construction projects with a suitable timeframe, allowing ample time for pouring, leveling, finishing, and curing. The resulting time efficiency benefits project deadlines.

Suitable For:

  • Un-reinforced strip footings and fence post footings

  • Basic foundations and general groundwork without reinforcement

  • Mass concrete and trench fill applications

  • Providing bases for extensions, houses, or patios

  • House floor blinding and pad foundation construction

  • Creating kerbs, unreinforced house floors with a lasting finish, and patios

  • Certain applications in the agricultural sector

  • Facilitating drainage and fill tasks around manholes or trenches

  • Mass concrete projects for non-aggressive, non-structural (DC-1) ground conditions

A metal tub filled with gray concrete being mixed with two trowels, on a concrete surface.

Frequently Asked Questions

C25 concrete mix ratio is composed of 1 part cement, 1 part fine aggregate or sand, and 2 parts coarse aggregate. Opting for ready-mix concrete means that the mix is already tailored to the appropriate strength for your intended use by the professionals. This provides you with the assurance of stability required for your project.

Use our C25 concrete mix ratio calculator to determine the exact quantities needed for your C25 concrete London project! 

Concrete strength is gauged in pounds per square inch (psi) and newtons, with the assigned number reflecting its minimum compressive strength 28 days post-pouring. C25 concrete attains a strength of 25 Newtons after this period, rendering it sufficiently robust for supporting substantial, heavy structures. In terms of PSI, C25 concrete boasts a strength of 3625, and it is notably favoured for domestic projects.

C25 concrete is frequently employed for flooring, foundations, footings, and trench filling. It has the requisite strength for select agricultural uses and is favoured in roadwork and ground preparation. In residential projects, it’s a preferred choice for constructing extensions.

When you’re constructing a new building or expanding an existing one, C25 concrete can be effectively used for pouring foundations and footings. This is a common and practical use of C25 concrete.

C20 concrete possesses a strength of 20 Newtons after 28 days, indicating it’s not as robust as C25 concrete. This lower strength makes C20 concrete more appropriate for domestic flooring and foundations, especially for lightweight structures. It’s also frequently employed as a foundation for workshops and garages. However, when dealing with larger constructions, the enhanced strength of C25 concrete positions it as the superior option.