Troubleshooting
Failures rarely have one cause — they have a chain. This troubleshooting guide takes the six failures we are called in to diagnose — low cube strength, segregation, bleeding, honeycombing, cracking and slump loss — and walks the diagnostic order: records first, materials second, process third, then the test that confirms which link broke.
Each answer ends in an action: what to quarantine, what to re-test, which calculator quantifies the repair.
The 8 most-asked questions — click any question for the full code-referenced answer
- F-1 Cube strength is consistently low — what should I check first?
- F-2 Concrete is segregating during placement — what can I do?
- F-3 Excessive bleeding observed on the surface — what is the cause?
- F-4 Honeycombing visible after de-shuttering — what went wrong?
- F-5 Cracks appearing on hardened concrete — how are they classified?
- F-6 Slump loss is too rapid at site — what could be the cause?
- F-7 Setting time is much faster or slower than expected — what to check?
- F-8 Surface dusting on hardened concrete — what is it and how to fix?
Calculators for this category
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