Concrete Strengths

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Concrete Strengths Explained

No matter the construction project, the concrete being used needs to be strong enough to handle the loads it is anticipated to withstand. Concrete strength is calculated by the weight it can tolerate 28 days after it has been laid and cured.

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Here are the many concrete strengths we provide

Our concrete strengths range from grade C20 with a strength of 20 newtons, to C50 with a strength of 50 newtons. C20 is designed for domestic floors and foundations. C50, our strongest concrete, is designed to withstand heavy-duty loads.

  • C20

    Purpose: 

    • Foundations (single storey)
    • Internal floor slabs
    • Domestic garage floors
    • Bases for sheds, driveways and workshops
    • Patio under paving

    Strength: 20N

  • C25

    Purpose: 

    • Bases for extensions, houses or patios
    • Kerbs
    • Drainage and filling around manholes or trenches
    • Mass concrete & trench fill
    • House floor blinding and pad foundations

    Strength: 25N

  • C30

    Purpose: 

    • Driveways
    • Paths
    • Patios
    • Garage and shed bases
    • Pavements
    • Foundations for extensions, houses and large walls
    • Garage, shed, or conservatory

    Strength: 30N

  • C40

    Purpose: 

    • Structural applications
    • Industrial applications
    • HGV parks
    • Farms or stores used for agricultural equipment
    • Foundations for traffic sign posts, planted lighting columns and posts for environmental barriers
    • Floor slabs used for garages or houses 

    Strength: 40N

  • C50

    Purpose: 

    • High rise buildings
    • Crane beams
    • Special commercial structures
    • Motorways

    Strength: 50N

  • Screed With or Without Fibre

    Purpose: 

    • Internal Floors 

There are different types of concrete, each with their own strengths and weaknesses. Depending on the project you're working on, you'll want to use a different type of concrete. Here's a quick guide to the different types of concrete and when to use them:


-Regular concrete has a compressive strength of 2,500 psi (pounds per square inch). It's often used for sidewalks, driveways, and other flat surfaces.


-Structural concrete has a compressive strength of 4,000 psi. It's used for foundation walls, beams, and columns.


-High-strength concrete has a compressive strength of 8,000 to 10,000 psi. It's used for bridges, dams, and other structures that need to be extra strong.


As you can see, there are many different types of concrete, each with their own strengths and weaknesses. Depending on your project, you'll want to use a different type of concrete.


If you're not sure which type of concrete to use, consult with one of our team who will be happy to assist you.


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