Title: Differentiate among types of masonry mortars.
Course: Masonry II (17008-II) > Section: Identifying and Mixing Masonry Mortars

Differentiation includes

- identifying applications, strengths, and proper use of the most commonly used mortars—M, S, O, and N
- describing additives used in masonry mortars (e.g., aggregates, accelerators, retardants, water-repellant agents, colors, air-entraining agents).

Process/Skill Questions:

- What are the types of masonry mortars?
- What accounts for the differences in masonry mortars?

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.