ACI RAP-2: Crack Repair by Gravity Feed with Resin

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ACI RAP-2: Crack Repair by Gravity Feed with Resin

Author(s)/Editor(s): ACI Committee E706| Format: PDF| Quality: Original preprint| Year: 2011

Field Guide to Concrete Repair Application Procedures

Crack Repair by Gravity Feed with Resin

This topical application for crack repair uses a thin polymer resin to fill the crack. Penetrating by gravity alone, the resin fills the crack and forms a polymer plug that seals out water, salts, and other aggressive elements. In some cases, a structural repair of the crack can be achieved. Before any concrete is repaired, the cause of the damage must be assessed and the objective of the repair must be

understood.

Typical causes of concrete cracking include steel corrosion, freezing and thawing, sulfate attack, and alkali-aggregate reaction (AAR). Poor practices during the original construction can cause excessive shrinkage or settlement in the structure. Improper joint spacing and load imbalances also contribute to cracking.

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