Concrete Material

Concrete materials are Water+ coarse & fine aggregates + admixture + _________?

• Coal

• Timber

• Cement

• Dusk

Paste is form when the cement powder is mixing with _______?

What are the two basic types of aggregates besides coarse?

Which one of the following water should not be used for concrete mixture:

• Sea water

• Clean water

• Fresh water

• Free from any dirt water

Which one of the following is a coarse aggregate?

• Fine sand

• Coarse sand

• Gravel

• Crusher fines

Which one of the following is a fine aggregate?

• Crushed rock

• Gravel

• Screenings

• Crusher fines

Graded aggregates should be in range of size and it fits together, why?

• Low maintenance

• Low porosity

• High compressive strength

• I don't know

Which component of concrete gives it desired compressive strength?

• Water

• Cement

• Aggregates

• Admixtures

Sand is an example of an aggregates?

• True

• False

Cement is an example of an aggregate?

• True

• False