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WorksheetsModule 5 Review
Total questions: 10
Worksheet time: 20mins
Of the five types of portland cement, the types that are generally only used for mortar are _____.
Types I, III, and V
Types I, II, and III
Types II and IV
Types III, IV, and V
Masonry cement is available in grades _____.
M, S, N, O, and K
I, II, III, IV, and V
M, S, N, and O
A, O, W, and R
The ASTM standard that applies to preblended mortar is _____.
C144
C270
C207
C91
Additives introduced into mortar to change its appearance or properties are called _____.
entrainments
aerations
preblends
admixtures
The type of mortar that is often interchanged with Type M because of its compressive strength is _____.
Type K
Type O
Type S
Type M
The term used to describe how well the mortar sticks to the masonry units is _____.
adhesion
admixture
cohesion
retention
The ability of mortar to withstand crumbling under pressure is called _____.
durability
mechanical bond
cohesion
compressive strength
In order for efflorescence to occur, two things must be present in a wall: _____.
air-entrained mortar and rebar
low-slump mortar and acidic soil
soluble salts and moisture
acidic soil and air-entrained mortar
During periods of warm and dry weather, sand does not need to be protected from _____.
wind
contact with other mortar ingredients
moisture
sunlight
When discharging mortar from a mixer, grasp the drum handle and dump the mortar into a wheelbarrow _____.
after removing the blades
after adding water to top off the mixture
after the drum has stopped turning
while the drum is still turning
