Civil Engineering - Concrete Technology - Discussion

Ans :- B (Screeding).

Screeding : Striking off the excess concrete to bring the top surface upto proper grade is called screeding. It removes humps and hollows of uniform concrete surface.

Floating: It is the removal of all irregularities on the surface of concrete that are left after screeding. It is done by wooden float.

Trowelling: The final operation of finishing is done after all excess water has evaporated by steel float to give a very smooth finish.

Finishing: The Process of leveling and smoothing the top surface of freshly placed concrete to achieve the desired appearance.

Floating is the right answer.

Thanks for explaining the answer.

Floating is the right answer.

Thank for explaining the answer.

Thanks for explaining.

Floating is the removal of excess cement concrete. And screeding is done to fill hollow space and and make uniform appearance and then trowelling is done to finalise the surface to give smooth surface.