Which process involves aligning corner blocks during construction?

The process of aligning corner blocks during construction is referred to as "chasing the bond." This technique is critical for ensuring that the masonry units, such as bricks or blocks, align correctly and maintain a consistent pattern throughout the wall. By carefully chasing the bond, masonry workers can create a stable and visually appealing structure, as it helps with the correct placement of corner blocks and ensures that the joints are uniform.

Chasing the bond involves taking into consideration the bond pattern being used, such as running bond or stack bond, and aligning the units in accordance with that specific bonding style. This not only affects the structural integrity of the wall but also enhances its aesthetic quality.

The other options relate to different masonry tasks. Spreading mortar refers to applying a layer of mortar to join the masonry units but does not directly involve alignment. Tooling joints is the process of finishing mortar joints for appearance and weather resistance. Buttering involves applying mortar to the face of a block or brick before setting it, which again does not focus on the act of aligning corner blocks specifically.