ETCM 3368- Spring 2024-Quiz 2

What is the name of the chemical reaction between cement and water?

• Hardening

• Cementation

• Hydration

• Dehydration

The size of most of the cement particles is --------

• about 10 inches

• about 5 inches

• ranges between 1 inch and 4 inches

• Less than 45 micrometer

In the manufacturing process of Portland cement, the cement raw materials are ground and then mixed together. After mixing, these materials are fed into a -----------

• Gypsum

• Rotary kiln

• Mixing Plant

• Clinker

In the manufacturing process of Portland cement, the cement raw materials are ground and then mixed together. After mixing, these materials are fed into a rotary kiln. What comes out of the rotary kiln is called----

• Concrete

• Cement

• Gypsum

• Clinker

Which cement is a general-purpose cement suitable for most applications where the special properties of other cement types are not required?

• Type I

• Type II

• Type III

• Type V

External sulfate attack is expected in which of these scenarios?

• Limited sulfate concentration in the gravel used in the concrete mix

• Too much sulfate in the gravel used in the concrete mix

• Too much sulfate in the soil surrounding the concrete

• Limited sulfate concentration in the groundwater surrounding the concrete

Two concrete mixtures A and B are subjected to the same sulfate concentration, and both include the same cement type (same C3A concentration). The only difference is that mixture A includes 10 lbs. of water and 30 lbs. of cement, while mixture B includes 15 lbs. of water and 25 lbs. of cement. Which mixture is expected to exhibit more sulfate attack?

• Mixture A

• Mixture B

• They will exhibit the same level of sulfate attack

• Cannot tell without lab testing

What type of cement will you use in a concrete that will be exposed to moderate sulfate attack?

• Type I

• Type II

• Type III

• Type V

What type of cement will you use in a concrete that will be exposed to severe sulfate attack?

• Type I

• Type II

• Type III

• Type V

What type of cement will you use in concrete applied in cold weather to reduce the curing time?

• Type I

• Type II

• Type III

• Type V