Concrete: Review

All aggregates must be essentially free of silt and/or organic matter.

• True

• False

Choose the option that is not an ingredient in concrete.*

• water

• portland cement

• wood pulp

• sand

• admixtures

Choose the option below that is a disadvantage to using concrete in your project.

• long curing time (long time to become hard)

• cast into any shape

• resistance to fire

The more water is used in concrete the weaker it gets

• True

• False

Sand is a type of aggregate.

• True

• False

Choose the option that is the most important ingredient in concrete.

• water

• portland cement

• wood pulp

• sand

• admixtures

Choose the option below that is an advantage to using concrete in your project.

• Excellent Resistance to Water

• formwork is needed (temporary - usually made out of wood)

• low tensile strength

Choose the option below that is another advantage to using concrete in your project.

• high compressive strength

• low tensile strength

• Formwork is needed (temporary - usually made out of wood)

Choose the picture of portland cement.

• 
• 
• 

Concrete will expand and shrink with temp changes.

• True

• False