The Different Types of Concrete: CEM1, CEM2 & CEM3

When selecting the right mix for your project, understanding the different types of concrete is crucial. Each variety has its own unique balance of strength, setting time, and sustainability, and the one you choose can significantly impact how your structure performs in the long run.

From fast-setting options for quick jobs to sustainable blends that reduce your carbon footprint, knowing which type to use gives you a real advantage.

Flowmix supplies high-quality ready-mix concrete and mix-on-site (volumetric) concrete across Tewkesbury, Gloucestershire, and West Midlands, helping both homeowners and contractors choose the most suitable mix for their build.

Whether you’re laying a new driveway or managing a large commercial pour, understanding what sets each cement type apart is crucial for ensuring strength, longevity, and value for money.

So, what are the different types of concrete, and how do CEM1, CEM2, and CEM3 compare? Let’s take a closer look at what each one means and when to use them.

What Does “CEM” Mean?

If you’ve ever looked closely at a concrete specification, you’ve probably seen terms like CEM1, CEM2, or CEM3, but what do they actually mean? These letters aren’t random; CEM stands for cement under the European Standard EN 197-1, which classifies the different types of concrete based on how they’re made and what materials they contain.

Each category defines the amount of clinker (the primary ingredient in cement) used and the supplementary materials, such as fly ash, limestone, or GGBS (Ground Granulated Blast Furnace Slag), added to enhance performance or sustainability.

Some types are stronger and set faster, while others offer better durability or lower environmental impact. Knowing the difference ensures your concrete performs exactly as you need it to.

CEM1: Ordinary Portland Cement (OPC)

CEM1 is the most traditional of the different types of concrete, known as Ordinary Portland Cement (OPC). It’s made from approximately 95–100% clinker, with a small amount of gypsum added to control the setting time. Due to its minimal additional materials, it provides high early strength and consistent performance, making it ideal for demanding structural applications.

This type of concrete is often used in foundations, precast elements, driveways, and structural beams, where strength and fast setting times are a priority. It performs well in colder weather as well, reaching workable strength quickly even in low temperatures.

However, there’s a trade-off. CEM1 has a higher carbon footprint than blended alternatives because it doesn’t include supplementary materials like slag or fly ash. While it delivers excellent short-term strength, contractors often prefer more sustainable options, such as CEM2 and CEM3, for modern builds that focus on long-term performance and environmental responsibility.

Need Expert Advice?

Speak to the team at Flowmix Tewkesbury or Walsall. We are happy to help with all your concrete requirements.

Flowmix Tewkesbury: 01684 217888 Flowmix Walsall: Tel: 01922 741731

CEM2: Blended Cement

CEM2 is one of the most popular choices among the different types of concrete. It offers a practical balance between strength, performance, and sustainability. It’s a blended cement, meaning that it contains around 65–94% clinker mixed with supplementary materials such as fly ash, limestone, or slag. These additions make it more environmentally friendly while also improving workability.

This blend enhances CEM2 concrete with a smoother finish, lower heat of hydration, and improved durability over time. It’s ideal for domestic foundations, driveways, slabs, and general construction projects where consistent strength and reduced carbon emissions are important.

While CEM2 develops strength slightly slower than CEM I in the early stages, it continues to harden and strengthen over time, resulting in a long-lasting outcome. For most everyday applications, it provides the perfect balance of reliability and eco-conscious performance.

CEM3: Blastfurnace Cement (GGBS)

Among all the different types of concrete, CEM3 stands out as the most sustainable and durable option. It’s made using a much lower proportion of clinker, typically between 20% and 64% and replaces the rest with Ground Granulated Blast Furnace Slag (GGBS), a by-product from steel production.

This clever use of recycled material gives CEM3 an impressive environmental advantage, significantly reducing CO₂ emissions while improving resistance to chemicals and moisture. It’s particularly well-suited to marine environments, basements, retaining walls, and large pours, where long-term durability is vital.

CEM3 concrete also generates less heat during curing, making it ideal for massive pours where cracking can be a concern. The only real drawback is that it gains strength more slowly at the start, especially in colder conditions; however, over time, it becomes exceptionally strong and stable.

Ready to Order Ready-Mix or Volumetric Concrete?

If you are ready to order a ready-mix concrete delivery, speak to the team at Flowmix Tewkesbury or Walsall. We will help you select the right mix and quantities and arrange for fast delivery to your site.

Flowmix Tewkesbury: 01684 217888 Flowmix Walsall: Tel: 01922 741731

Comparing CEM1, CEM2, and CEM3

Now that we’ve explored each of the different types of concrete, it’s easier to see how they compare in terms of composition, performance, and environmental impact. Each CEM type serves a distinct purpose, enabling builders and homeowners to select the ideal mix for their project.

Here’s a quick comparison to help you decide which one is best suited to your job:

Each option brings its own strengths. CEM1 is ideal for speed and strength, CEM2 offers a versatile, balanced mix, and CEM3 provides unmatched durability and eco-friendliness.

Choosing the Right Cement for Your Project

With so many different types of concrete available, choosing the right one for your project can be a daunting task. The best choice often depends on factors like project size, environmental conditions, and the desired finish. For example, a homeowner pouring a driveway might prioritise workability and appearance, while a contractor working on a basement or large foundation may need a slower-setting, more durable mix.

At Flowmix, we help customers across Tewkesbury, Gloucestershire, and the West Midlands select the most suitable concrete for their specific needs. Whether it’s CEM1 for structural strength, CEM2 for balanced performance, or CEM3 for sustainability and long-term durability, our expert team ensures every batch is mixed to the highest standard.

We understand that no two projects are the same, which is why we offer both ready mix and volumetric concrete options. This flexibility allows you to achieve the right consistency, volume, and setting time with minimal waste and maximum precision.

Conclusion

Understanding the different types of concrete — CEM1, CEM2, and CEM3 — makes it much easier to choose the right mix for your project. Each type has its own advantages, from the strength and speed of CEM1 to the balanced performance of CEM2 and the long-term durability and sustainability of CEM3.

At Flowmix, we take pride in delivering the perfect concrete solution for every job across Tewkesbury, Gloucestershire, and the West Midlands. Whether you’re working on a small domestic project or a large commercial site, our expert team will recommend the most suitable mix to ensure quality, efficiency, and lasting performance.

If you’d like expert advice on which concrete is best for your project, get in touch with Flowmix today. Our reliable service, competitive pricing, and precise batching ensure you always receive concrete you can trust, every time.

How Flowmix Can Help With Your Project

Flowmix has two plants, Gloucester and Walsall. We provide the following services (with time slots):

✅ Ready-mix concrete, mix on-site (volumetric concrete)
✅ Traditional and liquid screed.
✅ 200′ Concrete line pump Hire to reduce manual labour and associated costs, increase efficiency, reduce wastage and clean up.
✅ Interlocking concrete blocks for temporary or permanent barriers.
✅ Mini-Mix loads up to 4 cubic metres.

Flowmix has the BSA-approved Ready Mix Concrete Kitemark KM683844, a certification that “confirms a product or service’s claim has been independently and repeatedly tested by experts” (source BSI).

Flowmix Tewkesbury: 01684 217888 Flowmix Walsall: Tel: 01922 741731

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FAQs

What Are the Different Types of Concrete?

The different types of concrete depend on the type of cement used, specifically CEM1, CEM2, and CEM3.

• CEM1 is pure Ordinary Portland Cement, known for its strength and fast setting
• CEM2 is a blended cement offering a balance between performance and sustainability
• CEM3 contains GGBS for long-term durability and reduced carbon emissions.

Which Type of Concrete Is the Strongest?

CEM1 concrete is typically the strongest in terms of early strength and rapid setting, making it ideal for structural work or cold-weather projects. However, over time, both CEM2 and CEM3 develop excellent long-term strength and durability.

Is CEM3 Concrete More Environmentally Friendly?

Yes. CEM3 utilises a substantial amount of Ground Granulated Blast Furnace Slag (GGBS), a recycled material derived from the steel production process. That significantly reduces CO₂ emissions, making it one of the most environmentally friendly options among different types of concrete.

Can I Use CEM2 or CEM3 for Domestic Projects?

Absolutely. Both CEM2 and CEM3 are suitable for domestic applications such as driveways, patios, and foundations. At Flowmix, we can recommend the best blend for your specific project anywhere in Tewkesbury, Gloucestershire, or the West Midlands.

How Do I Know Which Type of Concrete I Need?

The right choice depends on your project requirements; factors such as load, exposure conditions, and environmental goals all play a part. The team at Flowmix can advise you on which type of concrete will deliver the best results in terms of strength, finish, and longevity.

Does Flowmix Offer Delivery for All Concrete Types?

Yes. Flowmix supplies and delivers a range of concrete types, including CEM1, CEM2 and CEM3, with flexible options for ready-mix or on-site concrete. We also provide concrete line pump hire for easy delivery to hard-to-reach areas.