C40 Concrete Supply in Birmingham
The heavy hitter: 40-newton concrete for industrial wearing surfaces and heavy-duty yards. From £128 per m³ +VAT — and if your job doesn't need it, we'll say so before you spend the money.
What C40 Is
C40 is trade shorthand for the C32/40 strength class — 40 N/mm² cube strength at 28 days, "40-newton concrete" — and it marks the door to industrial territory. This is the concrete for floors and yards that get worked, not just walked on:
- Industrial wearing surfaces — the RC32/40 territory of the designated-mix book
- Heavy-duty external yards, loading areas and hardstanding
- Hard-service agricultural floors — parlours, dairies and stables sit in the RC35/45 class just above
- Heavy industrial floors, which step up again to C40/50 at S3 consistence
As with every grade we sell, those RC names are used here educationally — designated mixes belong to certified producers. We batch equivalent designed mixes by strength class, C32/40 through C40/50, to the strength and durability requirements of BS 8500 / BS EN 206, usually against an engineer's specification.
From £128 per m³, +VAT — guide price, confirmed when you book. Billed on metered volume, 0.5m³ minimum, no part-load penalty.
Do You Actually Need C40?
Most domestic jobs don't — and strength you won't use is money poured into the ground. Before you order the biggest number on the list, check the smaller ones:
- Shed or workshop base? C20 does it, from £105/m³.
- Reinforced foundations? C25 — the C25/30 class — from £110/m³.
- Driveway? Not strength but air: an air-entrained C25/30 designed mix, covered on our driveway concrete page.
- Reinforced garage floor or suspended slab? C35 territory, from £120/m³.
Where C40 genuinely earns its price is repeated hard traffic: forklifts, pallet trucks, steel wheels, loaded HGVs turning on the same patch of floor every day. If that's your yard, read on. If it's your driveway, save the £23 a metre.
Heavy Yards and Specified Work
External yards that see de-icing salts need more than newtons. The right mix is an air-entrained C32/40 at S3 — what the designated-mix book calls PAV2 — where microscopic air bubbles stop freeze-thaw cycles scaling the surface. Two practical notes: air-entrained concrete must not be power-floated, and salted paving is a different animal from a domestic drive, so tell us what the yard will actually see.
For specified work we batch designed mixes: we design the concrete to your performance spec and are responsible for it meeting it. Every load carries a batch ticket — strength class, consistence, cement type, aggregate size, batch time, metered volume — and we'll fill cube moulds on request and point you to UKAS-accredited labs for identity testing. If your spec strictly requires certified designated concrete (NHBC and National Highways specs do), we'll tell you straight and advise.
On volume: a volumetric truck carries materials for up to around 9m³ per visit and simply reloads for bigger pours, batching fresh each time — no in-transit clock. Size the pour with the concrete calculator, and for scheduled or repeat work see commercial concrete supply. The whole strength ladder lives in our concrete grades guide.
C40 Concrete FAQs
What is C40 concrete used for?
C40 — "40-newton" concrete, the C32/40 strength class — is for floors and yards that work hard for a living: industrial wearing surfaces, heavy-duty yards, and hard-service agricultural floors such as parlours, dairies and stables. Heavy industrial floors step up again to C40/50. It's industrial kit, batched as a designed mix to BS 8500 / BS EN 206, usually to an engineer's spec.
Do I need C40 for a driveway or garage?
Almost certainly not — and we'd rather sell you the right mix than the dearest one. A domestic driveway wants an air-entrained C25/30 designed mix (PAV1-equivalent); an unreinforced garage base wants C16/20; a reinforced garage floor wants C28/35. Strength you don't use is money you don't get back.
What mix do I need for a yard treated with de-icing salt?
An air-entrained C32/40 designed mix at S3 consistence — the PAV2-equivalent. Salted, heavy-duty paving needs both the 40-newton strength and entrained air: microscopic bubbles that give freezing water room to expand so the surface doesn't scale. Note that air-entrained concrete must not be power-floated.
How much does C40 concrete cost in Birmingham?
Our C40 guide price is from £128 per m³ +VAT, confirmed when you book. Volumetric supply means billing on metered volume with a 0.5m³ minimum and no part-load penalty; for large pours we carry materials for up to around 9m³ per visit and reload.
Can you supply C40 to an engineer's specification?
Yes. We batch designed mixes — we design the concrete to meet your performance spec and are responsible for it doing so — with a batch ticket on every load and cube moulds filled on request for UKAS-lab identity testing. If the spec strictly requires certified designated concrete (NHBC and National Highways specs do), we'll say so up front and advise rather than fudge it.
Heavy-Duty Pour Coming Up?
Tell us the traffic, the spec and the square metres — we'll batch the right class, ticket every load and reload for as many cubes as the job takes. C40 from £128/m³ +VAT.