Fresh Concrete

Fresh concrete after passing the initial setting can still be used to pour into the formwork?

• Yes

• No

Fresh concrete will turn into a hardened solid after which of the following states?

• Final setting

• Initial setting

• Steady-state

• Deceleration

The concrete workability can be determined by which of the following tests?

• Strength test

• Sieve test

• Slump test

• Specific gravity test

Increasing the w/c will decrease the workability and increase the strength of concrete?

• Yes

• No

Increasing the maximum aggregate size will increase the workability if the amount of cement paste (cement + water) and aggregate are fixed.

• Yes

• No

Better aggregate grading leads to higher workability if the amount of cement paste (water+cement) is fixed.

• Yes

• No