BCEM UNIT-I

Brick Water absorption less than...

• 12

• 16

• 20

• 22

Standard size of brick.....

• 20*9*9

• 19*9*9

• 18*8*8

• 17*9*9

Compressive strength of 1st class bricks in N/mm²

• 7.5

• 8.5

• 10.5

• 9.5

Initial setting time of OPC in minute

• 30

• 33

• 25

• 34

Which test for initial setting time of cement

• Le-chaterliers

• Vicat needle

• Fineness test

• soundness test

For fineness of cement which size of sieve required in micron...

• 150

• 2.36

• 1.18

• 90

Ratio of M15 grade of concrete

• 1:2:3

• 1:1.5:3

• 1:2:4

• 1:3:6

How many days requires for curing concrete for full strength

• 28

• 14

• 7

• 30

The fine aggregate and coarse aggregate differentiate by sieve size

• 4.65

• 4.75

• 4.35

• 4.55

For standard consistancy test water cement ratio of cement weight is

• 30%

• 15%

• 25%

• 35%