engineering recuitment PPSC JE Civil Mock Test 2022 Construction Materials and Management Bricks and Mortar
An engineer simply strucked the two bricks together to check on the soundness of the bricks. If no clear ringing sound is observed, what could be probable cause?
1
Presence of excess magnesia in bricks
2
Presence of excess alumina and silica in bricks
3
Absence of Ferric oxides in bricks
4
Presence of excess lime in bricks