engineering recuitment MP Vyapam Sub Engineer Mock Test 2024 Construction Materials and Management Bricks and Mortar
In some brick masonry walls, patches of whitish crystals were found on the exposed surfaces, also chipping and spalling of bricks took place from the same walls. Which among the following are the causes of these defects?
1. Settlement of foundation
2. Over-loading of the walls
3. Sulphate attack
4. Efflorescence
1
1 and 2 only
2
2 and 3 only
3
2 and 4 only
4
3 and 4 only