Multiple Choice
Which of the following statements is true for efflorescence?
A) It is a deposit of acids on the surface of a masonry wall.
B) It can be prevented by using calcium chloride to accelerate the mortar setting time.
C) It appears as a white stain on brick walls.
D) It only occurs on walls that do not contain moisture or soluble salts.
Correct Answer:
Verified
Correct Answer:
Verified
Q1: Repointing should be started when the existing
Q3: Stronger is not necessarily better when specifying
Q4: Even the most inexperienced mason can remove
Q5: _ is specifically used for parapet walls,
Q6: Retempering mortar is acceptable under the following
Q7: _ mortars are a combination of portland
Q8: The compressive strength of the mortar you
Q9: Mortar with air content _ by volume
Q10: A solution of _ can be used
Q11: Mortar types are identified by both proportion