How to Repair a Concrete Column

* Concrete patch material (premixed or make your own)

* Trowel

* Water (if using a dry concrete mix)

* Wire brush

* Safety glasses

* Gloves

* Respirator (if working in a dusty environment)

* Drop cloths

Instructions:

1. Prepare the Damaged Area

- Use a wire brush to remove any loose concrete or debris from the damaged area.

- Chip away any concrete that is cracked or spalling (breaking off in pieces).

- Make sure the edges of the damaged area are sound and free of loose material.

2. Clean the Surface

- Use a damp cloth or sponge to clean the surface of the damaged area.

- Remove any dirt, grease, or other contaminants.

- Allow the surface to dry completely.

3. Mix the Concrete Patch Material

- If using a premixed concrete patch material, follow the manufacturer's instructions for mixing.

- If making your own concrete patch material, mix together 1 part cement, 2 parts sand, and 3 parts gravel.

- Add water gradually until the mixture reaches a consistency similar to thick pancake batter.

4. Apply the Concrete Patch Material

- Use a trowel to apply the concrete patch material to the damaged area.

- Press the material firmly into place and smooth it out.

- Make sure to fill all cracks and voids.

- If the damaged area is deep, apply the material in several thin layers, allowing each layer to dry before applying the next.

5. Cure the Concrete Patch Material

- Allow the concrete patch material to cure for at least 24 hours before putting in any weight or pressure.

- Keep the area moist during this time by misting it with water several times a day.

- Avoid moving the concrete or placing any heavy objects on it while the patch is still curing.

Tips:

- If the damaged area is large or deep, it may be necessary to use a concrete bonding agent to help the patch material adhere to the existing concrete.

- For best results, apply the concrete patch material in temperatures above 50 degrees Fahrenheit.

- If the damaged area is exposed to water or moisture, use a waterproof concrete patch material.