Before edging, which technique is used to loosen concrete from the side form?

Before edging, which technique is used to loosen concrete from the side form?

• A. A pointed trowel with a vertical sawing motion
• B. A broad trowel with a flat swipe
• C. A hammer and chisel
• D. A power grinder

Answer: (A)

Loosening concrete from the side form before edging helps break the bond so the form can be removed cleanly without pulling or tearing the edge. A pointed trowel with a vertical sawing motion is the right choice because the sharp point lets you insert into the joint and make precise vertical cuts along the form. This pries the concrete away slightly at the bond line and creates a release path, giving a clean edge for edging to follow. A broad trowel with a flat swipe would push and smooth rather than free the edge. A hammer and chisel is slower and more likely to gouge the concrete. A power grinder is too aggressive for this release step and not the proper technique.

Loosening concrete from the side form before edging helps break the bond so the form can be removed cleanly without pulling or tearing the edge. A pointed trowel with a vertical sawing motion is the right choice because the sharp point lets you insert into the joint and make precise vertical cuts along the form. This pries the concrete away slightly at the bond line and creates a release path, giving a clean edge for edging to follow. A broad trowel with a flat swipe would push and smooth rather than free the edge. A hammer and chisel is slower and more likely to gouge the concrete. A power grinder is too aggressive for this release step and not the proper technique.