railway RRB JE (CBT I + CBT II) Mock Test 2024 Construction Materials and Management Bricks and Mortar
Consider the following statements regarding first-class bricks.
1. These bricks are recommended for painting, exposed face work in concrete structures.
2. These are table moulded.
3. Water absorption of 22 % of its dry weight is allowed.
4. Compressive strength ≥ 10.5 N/mm2
Which of the above is/are correct?
1
2 and 3
2
1, 2 and 4
3
2, 3 and 4
4
2 and 4