If the joint is struck when the mortar is too hard, a black mark will appear on the surface of the joint, which is called _____ .
A) burning the joint
B) joint fatigue
C) charring the joint
D) joint marking

Question

Quizplus · Accepted Answer

The black mark that appears on the surface of the joint is called "burning the joint." This happens when the joint is struck when the mortar is too hard, causing damage to the joint.

If the Joint Is Struck When the Mortar Is Too