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Concrete Repair / Site problem guide

Crack that continues to move

A repaired crack reopens across seasons or loads.

A practical decision sequence

Diagnose the cause, then verify the repair.

Use the site evidence to agree a project-specific method with the responsible engineer, concrete producer, manufacturer or specialist applicator.

01 / Symptom

What is happening?

A repaired crack reopens across seasons or loads.

02 / Inspect and test

Evidence to collect

Monitor width and direction; relate movement to joints, thermal change, settlement or load.

03 / Likely mechanism

Why it can fail

Rigid filling fails if the underlying movement remains.

04 / Technical response

Choose the system

Investigate structural cause; detail movement accommodation or engineered repair as appropriate.

05 / Site execution

Control the application

Record movement before choosing sealant, injection or strengthening method.

06 / Acceptance

Verify the result

Monitor repaired crack through representative conditions.

Avoid this shortcut

Do not use rigid epoxy injection on an active structural crack without design review.

These guides are editorial starting points, not a project specification. Confirm the design, product data, substrate conditions and inspection plan for the actual site.
Technical references

References inform the topic; they do not endorse a specific product for this project.

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