- 1). Insert a 1/2-inch-wide chisel into the crack and gently hammer to widen the crack along its length.
- 2). Sweep away all of the concrete chips and dust with a wire brush. Suck up fine particles with a shop vacuum.
- 3). Apply a small amount of water to the length of the crack so that is is slightly moist.
- 4). Mix the hydraulic cement mix with water in a plastic bucket. Follow the specific instructions on the package for the proper ratio of the mix to the water.
- 5). Scoop the hydraulic cement into the crack and smooth over with a putty knife.
- 6). Draw a moist broom over the wet surface to add texture to the cement. Allow the repair to dry for 24 hours before using the surface.
- 7). Repeat the crack repair for all cracks in the slab.
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