You need a low viscosity product either a isocyanate, acrylate, or polyurethane that penetrates or wicks into the crack.. Products you wont find in a big box store... You can try building supply outlets... that supply bridge and heavy construction contractor..
We have used products by Sika, Transpo, etc on bridge slabs and superstructures..
Ardex
Crack injection
https://sealboss.com/concrete-crack-mender/
https://transpo.com/products/applications/bridge-preservation/bridge-crack-sealers/sealate/
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Last edited by TimT; 02-12-2025 at 01:18 PM..
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