EPISODE -10 | Honeycomb Concrete Repair | Causes, Prevention & How to Fix|

Описание: What is Honeycomb in Concrete:
Honeycombing refers to voids or air pockets visible on the surface or inside concrete after formwork is removed. It appears like a honeybee nest with exposed aggregates and no cement paste.

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Why Honeycomb Occurs:
• Insufficient compaction of concrete
• Leaky or loose shuttering causing cement slurry to escape
• Improper concrete mix with low workability
• Obstruction due to congested reinforcement
• Pouring concrete from a high height
• Delay in placing concrete once mixed

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When to Repair Honeycomb:
• As soon as the formwork is removed and honeycomb is visible
• Ideally within 24–48 hours before structural loads develop
• Before plastering or any finishing work

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How to Repair Honeycomb:
1. Chisel or chip off all loose concrete and exposed aggregate
2. Clean the area thoroughly using air or water
3. Apply bonding agent like SBR latex or epoxy on the surface
4. Prepare repair mortar – use non-shrink polymer-modified mortar or micro concrete for deeper voids
5. Fill the voids using trowel or pressure grouting
6. Cure properly for at least 7 days to regain strength
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