FE Civil Engineering Materials Exam
Questions and Answers
Cement Paste - Correct Answers -cement + water
Mortar - Correct Answers -cement paste + water
Concrete - Correct Answers -cement, water, sand, and aggregate
Accelerators - Correct Answers -Speed up initial and final set (decrease set time)
Fly ash - Correct Answers -Can be used to improve properties and reduce cement
content. Increases workability and extends the hydration process resulting in higher
strength
Slag cement - Correct Answers -Can be used to improve properties and reduce cement
content. Made from iron blast furnace slag
Silica fume - Correct Answers -Can be used to improve properties and reduce cement
content. Increases strength and durability
Hydration - Correct Answers -The chemical reaction between cement particles and
water
Entrapped voids - Correct Answers -These are trapped air due to PCC handling of the
cement. They decrease strength and increase permeability.
Entrained air - Correct Answers -These are produced by microbubbles and increase the
durability of the cement.
Setting - Correct Answers -This refers to stiffening or change from plastic to solid state
in cement.
Hardening - Correct Answers -This refers to the strengthen gain of the cement paste.
0.4 0.7 - Correct Answers -The typical w:c ratio is between _______ and ______
Water reducers - Correct Answers -Allow for the use of less water while maintaining
workability
Questions and Answers
Cement Paste - Correct Answers -cement + water
Mortar - Correct Answers -cement paste + water
Concrete - Correct Answers -cement, water, sand, and aggregate
Accelerators - Correct Answers -Speed up initial and final set (decrease set time)
Fly ash - Correct Answers -Can be used to improve properties and reduce cement
content. Increases workability and extends the hydration process resulting in higher
strength
Slag cement - Correct Answers -Can be used to improve properties and reduce cement
content. Made from iron blast furnace slag
Silica fume - Correct Answers -Can be used to improve properties and reduce cement
content. Increases strength and durability
Hydration - Correct Answers -The chemical reaction between cement particles and
water
Entrapped voids - Correct Answers -These are trapped air due to PCC handling of the
cement. They decrease strength and increase permeability.
Entrained air - Correct Answers -These are produced by microbubbles and increase the
durability of the cement.
Setting - Correct Answers -This refers to stiffening or change from plastic to solid state
in cement.
Hardening - Correct Answers -This refers to the strengthen gain of the cement paste.
0.4 0.7 - Correct Answers -The typical w:c ratio is between _______ and ______
Water reducers - Correct Answers -Allow for the use of less water while maintaining
workability
