Multiple Choice
Retempering of mortar, if needed, should be generally done within
A) 1 h of the initial preparation of mortar.
B) 4 h of the initial preparation of mortar.
C) 2- 1/2 h of the initial preparation of mortar.
D) 5- 1/2 h of the initial preparation of mortar.
E) none of the above.
Correct Answer:

Verified
Correct Answer:
Verified
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