The main goals of a concrete repair project are: 1. Increase strength to ensure the structural integrity of the concrete. 2. Prevent liquid infiltration to avoid further damage caused by water. 3. Improve durability and functional performance of the concrete. 4. Prevent corrosion to enhance the lifespan of the concrete. 5. Ensure public safety by addressing any structural issues. 6. Enhance the appearance of the concrete for aesthetic purposes.