TL;DR
A bonding agent is the liquid polymer or epoxy applied to existing concrete so fresh concrete, mortar, or patching material will fuse to it instead of curing as a separate, delaminating layer. Cured concrete will not knit to new material on its own, which is why unprimed patches and toppings pop loose.
What it means
A bonding agent is the liquid polymer or epoxy applied to existing concrete so fresh concrete, mortar, or patching material will fuse to it instead of curing as a separate, delaminating layer. Cured concrete will not knit to new material on its own, which is why unprimed patches and toppings pop loose. Acrylic and SBR latex products brush on, or mix into the repair as a slurry, for general resurfacing, while epoxy agents meeting ASTM C881 handle structural repairs; some require placing the new material while still tacky. Surface preparation, clean, sound, and profiled, matters as much as the product itself.
Where it sits in the glossary
Bonding agent is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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