How Mortar Performance Is Measured

Mortar performance is measured by several key properties that matter in masonry work. These include workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Together, these properties help determine how well mortar can be placed, bonded, and finished.

Good mortar in a plastic state possesses good workability and the ability to retain water.

Good workability allows the mortar to spread smoothly, adhere to vertical surfaces without sagging, extrude from joints without falling, and position masonry units easily. Mortar workability is also gauged by its sliding behavior and adhesion to a t...