Cement

When concrete is to be laid under water ___________ is to used.

• a) Rapid Hardening Cement

• b) Ordinary Portland Cement

• c) Quick Setting Cement

• d) Low Heat Cement

Slow setting cement have higher percentage of

• Tricalcium aluminate

• Tricalcium silicate

• Di-calcium silicate

• Gypsum

Answer explanation

Gypsum is the retarder that means it slow down the action of setting

____is the weight of a bag of cement

• 1 Kg

• 10Kg

• 25Kg

• 50Kg

Select which one is the correct abbreviation of PPC

• Portland Pozzolana Cement

• Portland Produced Cement

• Perfect Portland Cement

• Productive Portland Cement

What is the initial setting time of cement?

• 15 mins

• 30 mins

• 1 hour

• 30 hours