Concrete is one of the most widely used construction materials in the world. From domestic driveways to large commercial infrastructure, choosing the right concrete mix is essential for ensuring durability, structural integrity, and long-term performance.

Different concrete mixes are designed with varying strengths and properties depending on the intended application. In this guide, we explain the most common concrete mix types used in the UK and where they are typically used.

What Determines a Concrete Mix Type?

Concrete is made from a combination of cement, water, sand, and aggregates. When mixed together, a chemical reaction called hydration occurs, causing the material to harden and gradually gain strength over time.

Concrete mixes are commonly classified by compressive strength, which is measured in Newtons per square millimetre (N/mm²) after 28 days. For example, a C25 mix means the concrete has a strength of 25 N/mm² after curing.

The higher the number, the stronger and more durable the concrete.

Common Concrete Mix Types and Their Uses

Below are the most commonly used concrete grades in domestic, commercial, and industrial construction.

C10 Concrete

C10 is a low-strength mix typically used for non-structural applications.

Typical uses

• Patio slabs

• Pathways

• Kerb bedding

• Drainage works

Because it has a lower cement content, it is best suited to projects that do not require structural strength.

C15 Concrete

C15 provides slightly more strength than C10 and is often used for ground preparation or foundation layers.

Typical uses

• Floor blinding

• Kerb foundations

• Trench fill

It is frequently used as a base layer before stronger concrete is poured above it.

C20 Concrete

C20 is one of the most popular mixes for domestic construction projects.

Typical uses

• House foundations

• Garage bases

• Shed bases

• Internal floor slabs

It offers a good balance between strength and cost, making it ideal for residential projects where heavy structural loads are not present.

C25 Concrete

C25 is a multi-purpose concrete mix commonly used in both domestic and commercial construction.

Typical uses

• House footings and foundations

• Slab foundations

• Groundwork and trench filling

• Kerbing

Because of its versatility and strength, C25 is widely used across many types of building projects.

C30 Concrete

C30 is a stronger and more durable concrete mix designed for heavy-duty applications.

Typical uses

• Driveways

• Roads and pavements

• Agricultural yards

• Commercial flooring

Its increased durability allows it to withstand heavier loads and exposure to harsh weather conditions.

C35 Concrete

C35 is a high-strength structural concrete used for projects that require increased durability.

Typical uses

• Structural slabs

• Commercial buildings

• Reinforced concrete structures

• Agricultural buildings

This type of concrete is often used in large construction projects where structural reliability is essential.

C40 Concrete

C40 is a very high strength concrete designed for demanding environments.

Typical uses

• Heavy-duty industrial floors

• Structural beams and foundations

• Agricultural facilities

• Chemical-resistant environments

This mix can withstand heavy loads and exposure to aggressive conditions, making it ideal for industrial or large-scale infrastructure projects.

Specialist Concrete Mixes

In addition to standard mixes, some projects require specialist concrete with enhanced properties.

Fibre-Reinforced Concrete

This mix includes synthetic or steel fibres to improve strength and reduce cracking, making it ideal for high-traffic areas such as warehouses and industrial floors.

Waterproof Concrete

Designed with additives that prevent water penetration, waterproof concrete is often used in basements, foundations, and underground structures.

Air-Entrained Concrete

This mix contains tiny air bubbles that help protect the concrete from freeze-thaw cycles, making it suitable for outdoor paving and exposed surfaces.

Choosing the Right Concrete for Your Project

Selecting the correct concrete mix depends on several factors:

• The weight the concrete must support

• Environmental conditions such as weather exposure

• The type of construction project

• Whether the concrete will be reinforced

Using the wrong mix can lead to cracking, reduced durability, or structural issues. This is why it’s important to consult with an experienced concrete supplier before ordering.

Did you know, you can speak to us if you’re unsure about which concreate you need for your project, our dedicated and knowledgeable team will be here to help you every step of the way.

Concrete Supply from Sheridan Concrete

At Sheridan Concrete, we supply high-quality concrete mixes for domestic, commercial, and industrial projects. Whether you need concrete for a driveway, foundation, floor slab, or large construction project, our team can help you choose the right mix for the job.

We provide reliable delivery and expert guidance to ensure your project starts with the right materials.

✔ Need concrete for your next project?

Contact Sheridan Concrete today for expert advice and a competitive quote.