Deck 9: Mixing Mortar

Question 1

Lime is used without cement in a training mortar because the mortar does not harden and may be reused.

Answer 1

True

Question 2

Most masonry jobs require a material batcher box to proportion the sand and masonry cements.

Answer 2

False

Question 3

To make mixing mortar as easy as possible, _____ .

A) the masonry cement must be added by shovel for a large batch of mortar
B) add the sand in halves to help distribute materials evenly
C) a hose should be used to add the water
D) use a shove to push and pull the mortar through the mix

Answer 3

B

Question 4

The final step in mixing the mortar is to ______ .

A) perform a test to determine workability and adhesiveness
B) clean the mixing equipment with water
C) combine water with the dry mix
D) position the mortar box conveniently for the mason

Question 5

As a rule, mortar ______ or it will be too weak to use.

A) cannot be used longer than 1 hour after mixing
B) that is too wet should be mixed longer
C) should not be tempered more than two times
D) should never be tempered when evaporation occurs

Question 6

When mixing mortar with the power mixer, _____ .

A) place the shovel inside the mouth of the mixer
B) pull fallen or torn bags out of the mixer carefully whne the mixer is running
C) use water and the turning of the blades to clean the mixer
D) wear safety glasses or goggles

Question 7

Prebagged masonry cement mortars require _____ to be added to the mix.

A) sand and hydrated lime
B) water, sand, and hydrated lime
C) only sand and water
D) only water

Question 8

When mixing mortar with a power-driven mixer, add a small amount of water to prevent the materials from building up and sticking to the sides of the drum.

Question 9

SPEC MIX _____ .

A) varies slightly in color from batch to batch
B) requires minimal shoveling by the mason
C) is packaged in 80-pound or 3000-pound bulk waterproof bags
D) includes sand that is factor dried to 5 percent moisture content

Question 10

It is not necessary to protect the ______ from moisture during warm weather.

A) sand
B) cement
C) lime
D) any mortar ingredients

Question 11

Sand for mixing mortar must be protected from moisture in warm weather.

Question 12

As a rule, a _____ is used for proportioning the sand for mortar mixtures.

A) regular dirt shovel
B) square shovel
C) masonry trowel
D) 5-gallon barrel

Question 13

If the sand for mixing mortar freezes, it ______ .

A) cannot be used and must be replaced
B) does not affect the mixing process
C) can be used with less water in the mix
D) must be completely thawed before it is used

Question 14

An excessive amount of water added to a mortar mixture, known as _____, destroys the water-cement ratio.

A) drowning the mortar
B) fattening the mortar
C) proportioning the mortar
D) hydrating the mortar

Question 15

When an excessive amount of water is added to the mortar mixture, the mixture must be thrown out.