Ready-mix concrete
Every mix is batched to BS 8500 at our Derby plant and the ticket shows the grade, slump and cement content you asked for. Choose a grade from the table, or tell us the job and we will.
How much do you need?
Enter the pour in metres. We add 10% for waste and uneven ground, then show the loads in 6 m³ and 8 m³ trucks.
Quick reference
Volume per square metre, and how far one 6 m³ load goes.
| Pour | Volume | One 6 m³ load covers |
|---|---|---|
| 100 mm (4 in) slab | 0.10 m³ | 10 m² |
| 150 mm (6 in) slab | 0.15 m³ | 6.7 m² |
| 200 mm (8 in) slab | 0.20 m³ | 5 m² |
| Strip footing 600 × 300 mm | 0.18 m³ per metre | 5.5 m |
| Strip footing 600 × 450 mm | 0.27 m³ per metre | 3.7 m |
| Trench fill 600 × 900 mm | 0.54 m³ per metre | 1.85 m |
Mix specifications
Designated and designed mixes to BS 8500-2. If your engineer has specified something not listed, send the specification and we batch to it.
| Grade | Typical use | Slump | Max aggregate | Cement content |
|---|---|---|---|---|
| C20/25 (GEN3) | Domestic floors, footings, shed bases | S2 (50–90 mm) | 20 mm | ≥ 260 kg/m³ |
| C25/30 (RC25/30) | Reinforced slabs, garage floors, paths | S2–S3 | 20 mm | ≥ 280 kg/m³ |
| C28/35 (RC28/35) | Reinforced foundations, retaining walls | S3 (100–150 mm) | 20 mm | ≥ 300 kg/m³ |
| C32/40 (RC32/40) | Structural slabs, external paving, farm yards | S3 | 20 mm | ≥ 320 kg/m³ |
| C35/45 (RC35/45) | Suspended slabs, columns, exposed structures | S3 | 20 mm | ≥ 340 kg/m³ |
| C40/50 (RC40/50) | Heavy-duty industrial floors, precast | S2–S3 | 20 mm | ≥ 360 kg/m³ |
| Foamed / flowing screed | Void fill, trench reinstatement, floor screed | Flowing | 6 mm or none | By design |
Admixtures and options
- Retarder
- Slows setting for long pours or hot days. Ask for it on anything over 40 m³.
- Accelerator
- Faster strength gain in cold weather or when the next trade is waiting.
- Waterproofing
- Integral admixture for basements, tanks and retaining walls.
- Fibres
- Polypropylene or steel fibres in place of mesh for slabs and yards.
- Air entrainment
- Frost resistance for external paving and farm roads.
- Colour
- Pigmented mixes in buff, red and charcoal, colour-matched to a sample.
Ready to order?
Tell us the grade, the volume and the postcode. Orders in by 3pm are delivered next working day.