Project Guide

How to Repair Concrete

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Using a Chisel, Make the Crack Wider at the Bottom than the Top
Using chisel, make crack wider - Minor Sidewalk Repairs

To anchor a patch, make the crack wider at the bottom than at the top. Place a cold chisel in the crack, angle it slightly outward and tap it with a 3-pound sledge hammer.

Clean Out the Debris with a Stiff Fiber or Wire Brush
Clean out debris with stiff fiber - Minor Sidewalk Repairs

Crumbs and pebbles weaken a concrete patch, so make sure all debris is removed from the crack

Fill the Crack with Patching Mix (also know as Vinyl Concrete)
Fill crack with patching mix - Minor Sidewalk Repairs

Patching mix is made from vinyl, Portland cement and sand. It covers cracks up to 1⁄2 inch wide. Dampen the area around the crack, and then trowel on the mix. Smooth the surface with either a trowel or a small float.

Address Any Pop-Outs
Address any pop-outs - Minor Sidewalk Repairs
  • Pop-outs are small conical shape chunks of concrete that have popped out and left a hole behind.
  • Using a cold chisel and a 3-pound sledgehammer, undercut the hole by making the pop-out wider at the bottom than at the top. Clean the hole with a stiff fiber or wire brush.
Wet the Surface and Apply a Concrete Bonding Agent
Wet surface and apply concrete agent - Minor Sidewalk Repairs

Apply the bonding agent inside the hole with a paintbrush. Wait for about 10 to 15 minutes or until it gets sticky.

Pack a Small Amount of Anchoring Cement into the Hole
Pack small amount anchoring cement - Minor Sidewalk Repairs

Smooth the surface with a putty knife or trowel. Anchoring cement expands as it hardens. It is primarily used for anchoring bolts in holes drilled in concrete, but it also works well here. Keep the area moist until the patch cures.

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