Choosing the Right Strength for Volumetric Ready Mix Concrete
At R&R Concrete and Screed, we provide high-quality volumetric ready-mix concrete tailored to meet the needs of any project, from domestic foundations to large-scale commercial developments.
Choosing the right concrete strength is crucial for ensuring durability, safety, and compliance with construction standards. Below is a guide to help you select the correct strength for your project.
Understanding Concrete Strengths
Concrete strength is measured in Newtons per square millimeter (N/mm²) and typically classified as C-strengths (compressive strength ratings). The number following the "C" indicates the strength the concrete is expected to achieve after 28 days of curing.​​
General & Domestic Applications
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C10 (ST1) – Ideal for blinding layers, kerb bedding, and non-structural applications.
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C15 (ST2) – Suitable for paving, patios, and footings for small walls.
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C20 (Gen 3) – Commonly used for house floors, driveways, and light domestic applications.
Structural & Load-Bearing Applications
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C25 (ST3) – Used for house foundations, garage floors, and light industrial applications.
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C30 (PAV 1) – Designed for driveways, external paving, and moderate traffic areas.
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C35 (PAV 2) – High-strength concrete for heavy-duty floors and commercial driveways.
Heavy-Duty & Commercial Use
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C40 – Ideal for high-load areas such as industrial floors and heavy traffic roads.
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C50+ – Used in specialist construction projects requiring maximum durability and strength.
Additional Concrete Enhancements
Our volumetric concrete can be customised with additives to enhance performance:
Air Entrained Mixes – Improves frost resistance for outdoor applications.
Fibre Reinforced Concrete – Increases durability and reduces cracking.
Superplasticisers – Enhances workability for complex pours.
Retarders – Slows setting time for extended workability.
