Quality Control Checklist for Concrete Works

Concrete is unforgiving. Once it's poured and set, most defects can only be repaired or removed at great cost — and some compromise the structure permanently. That's why concrete works are controlled with a sequence of checks before, during, and after the pour. A good quality control checklist makes sure none of them is skipped.

Use the framework below as the basis for your concrete QC checklist. Always work to the project specification and relevant standards, which take precedence over any general guidance.

Before the pour

The pre-pour checks are the most important, because once concrete covers the works you can't inspect them. This stage is usually a hold point:

• Formwork — dimensions correct, plumb and level, joints tight, clean inside, release agent applied, adequately braced and propped.
• Reinforcement — correct bar size, spacing, and number per drawings; laps and anchorage correct; securely tied.
• Cover — spacers in place giving the specified concrete cover to the steel.
• Cast-in items — starter bars, dowels, sleeves, ducts, anchor bolts, and box-outs positioned correctly.
• Cleanliness — no debris, water, or loose material in the formwork.
• Approval — pre-pour inspection signed off before concrete is ordered.

At delivery

• Delivery ticket — mix matches the specification (strength class, slump, aggregate size, additives).
• Time — within the allowable time from batching.
• Slump / workability test — within tolerance before placing.
• Test samples — cubes or cylinders made for strength testing, correctly labelled and stored.
• Temperature — ambient and concrete temperature within limits for hot or cold weather concreting.

During the pour

• Placing — concrete placed in correct layers without segregation, not dropped from excessive height.
• Compaction — properly vibrated to remove air voids without over-vibrating.
• Continuity — pour kept continuous to avoid cold joints; construction joints formed where planned.
• Levels — finished levels and falls checked as work proceeds.

After the pour

• Finishing — surface finished to the specified standard.
• Curing — appropriate curing method applied and maintained for the required duration; this is critical for strength and durability and frequently neglected.
• Protection — protected from rain, frost, and traffic while gaining strength.
• Striking formwork — only after the concrete has reached adequate strength; props left in place as required.

Records to keep

• Signed pre-pour inspection.
• Delivery tickets and slump results.
• Cube/cylinder test certificates.
• Photos of reinforcement, cover, and the completed pour.
• Any NCRs raised and their resolution.

These records prove the structure was built and verified correctly — essential if questions arise later.

Why digital helps here

Concrete QC generates time-critical records across several parties. Capturing the pre-pour sign-off, the slump result, the delivery ticket photo, and the reinforcement images in one place — against the specific pour — means the full quality record exists the moment the pour finishes, not weeks later when someone tries to reconstruct it.

Key takeaways

Concrete quality control runs before, during, and after the pour. The pre-pour inspection of formwork, reinforcement, and cover is a genuine hold point — once it's covered, it's too late. Verify the mix at delivery, control placing and compaction, never neglect curing, and keep the records that prove it was done right.