Question

For compacting plain concrete road surface of thickness less than 20 cm we use

Answer 1

Answer:

Explanation:

iscussion :: Concrete Technology - Section 2 ( Q.No.29) ... For compacting plain concrete road surface of thickness less than 20 cm, ... Screed vibrators mostly used in road pavement

Answer 2

Answer:

For flooring or road surfaces, a screed vibrator is used with plain concrete or ready-mix concrete. Use a screed vibrator if the depth is less than 20 cm.

Explanation:

Screed vibrator:

• A Beam unit plus a Vibrator unit make up a double beam screed vibrator.
• To generate a compact and even surface, a twin beam screed vibrator is used to vibrate the concrete.
• These self-traveling vibrators just need to be guided along the formwork and dragged at the ends by two operators without having to work in the concrete.

Thickness of screed:

• A sand and cement bonded screed should be 25–40mm thick, an unbonded screed should be at least 50mm thick, and a floating screed should be at least 65mm thick for lightly loaded floors and 75mm thick for more heavily loaded floors.

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