Which word is a synonym for drab?

• hard

• boring

• dark

• resistant

Which is NOT true about concrete?

• it's strong

• it's durable

• it's high maintenance

• it's simple to use

____ is also known as fine aggregate.

The English word for calcaire is ____.

Portland cement is made by putting materials, mainly limestone, into a kiln and then ____ them into a fine powder.

Portland cement turns concrete into a solid by...

• drying

• evaporation of water

• a chemical reaction called hydration

Aggregate ____ the amount of shrinkage as concrete cures.

• increases

• decreases

Adding more water to the concrete mix makes it...

• easier to pour

• stronger

• more fire resistant

____ the water content can have an impact on the strength of the concrete.

• To vary

• Vary

• Varying

Draw an example of a structure that uses concrete.