Mixing should include ingredients that are blended in proper proportion, using a mortar hoe and power mixer, according to industry standards.
Process/Skill Questions:
NCCER Masonry Standards
Level One, Module Five (28104-13): Mortar
This module explains the types and properties of mortar and the materials used in the mixture, including admixtures; provides instructions for mixing mortar by machine; and describes how to properly apply and store mortar.