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Grouts & Anchors / Site problem guide

Chemical anchor fails proof load

Anchor slips or pulls out during testing.

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?

Anchor slips or pulls out during testing.

02 / Inspect and test

Evidence to collect

Review design load, embedment, edge distance, cracked concrete, drilling and hole-cleaning logs.

03 / Likely mechanism

Why it can fail

Wrong geometry or incomplete cleaning can prevent design bond.

04 / Technical response

Choose the system

Have anchorage redesigned or reinstalled using an approved system and substrate condition.

05 / Site execution

Control the application

Follow evaluated product instructions for drilling, cleaning, dispensing, insertion and cure.

06 / Acceptance

Verify the result

Use engineer-approved proof testing and record failures and corrective action.

Avoid this shortcut

Do not reuse a failed hole without engineering approval.

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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