Exam Questions and CORRECT Answers
What is the definition of masonry? - CORRECT ANSWER - construction material that is
formed by combining units such as bricks and stone with a binding material called mortar.
List the parameters that impact the characteristics and strength of masonry work. - CORRECT
ANSWER - 1. Properties of Masonry units
2. method of joining
3. bonding
4. anchoring
5. mortar type
List the important functional types of Masonry - CORRECT ANSWER - 1. Density
2. Compressive strength
3. flexural strength
4. modulus of elasticity
5. thermal conductivity
What are the general properties of mortar? - CORRECT ANSWER - 1. Accounts for as
little as 7% of the total volume of the masonry.
2. But it influences performance more than this proportion indicates
What are the functional properties of mortar? - CORRECT ANSWER - 1. Binds individual
brick units together.
2. Seals against air moisture penetration
3. Bonds with steel reinforcing, metal ties and anchor bolts to join the building together
structurally.
, List the five Key Mortar Characteristics - CORRECT ANSWER - 1. Workability.
2. Compressive strength.
3. Extensibility and volume change.
4. Retentivity and flow.
5. Bond strength.
List mortar basic ingredients - CORRECT ANSWER - 1. Portland Cement
2. Lime
3. Sand
List, where possible, one positive and one negative impact of each of mortar's basic ingredients
on mortar. If not possible, list two impacts of the ingredient on mortar. - CORRECT
ANSWER - a. cement - high compressive strength, high vulnerability to cracking
b. lime - filler material.
c. sand - filler material.
List the types of mortar - CORRECT ANSWER - 1. M - high strength - use below grade
2. S - medium high strength - use above and below grade
3. N - medium strength - above grade exposed load-bearing walls
4. O - medium strength - above grade non-exposed non-load-bearing
5. K - weakest
List the types of mortar joints (on masonry unit) - CORRECT ANSWER - 1. Bed
2. Head joint
3. Full mortar bedding
4. Face shell bedding