Angeles University Foundation Construction Material and Testing Quiz

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What property does alumina impart to cement?

Increased setting time

Reduced setting time (correct)

Increased strength

Reduced weight

What is the effect of excess alumina on cement?

Increases strength

Has no effect

Increases setting time

Decreases strength (correct)

What is the maximum amount of magnesia that should be present in cement?

1%

3%

5%

2% (correct)

What is the role of iron oxide in cement?

All of the above Signup and view all the answers

What is the purpose of adding gypsum (CaSO4·2H2O) to cement?

To increase setting time Signup and view all the answers

What is the maximum amount of sulfur trioxide that should be present in cement?

2% Signup and view all the answers

Why is the presence of lime in a sufficient quantity required in cement?

To impart strength to the cement Signup and view all the answers

What happens if there is an excess of lime in cement?

Causes the cement to expand and disintegrate Signup and view all the answers

What is the role of silica in cement?

Impart strength to the cement Signup and view all the answers

Which component of cement usually presents to about 30 percent of its composition?

Silica Signup and view all the answers

What is the main function of alumina in cement?

Imparts strength to cement Signup and view all the answers

What happens if there is a deficiency in lime in cement?

Reduces strength of the property Signup and view all the answers

What is the primary focus of Field Testing in construction materials and testing?

Identifying if further study is needed Signup and view all the answers

In the context of construction, what does 'manufacturing' refer to?

Mass producing similar items without a designated purchaser Signup and view all the answers

Who typically takes on multiple roles such as laborer, paymaster, and design team in a building construction project?

The owner of the property Signup and view all the answers

What does CMT stand for in the context of construction?

Construction Materials and Testing Signup and view all the answers

Which area of testing services involves activities like evaluating compaction, moisture, and air content?

Field Testing Signup and view all the answers

When Field Testing indicates a need for further study, what is the next step in the comprehensive CMT process?

Laboratory testing Signup and view all the answers

What is the primary purpose of testing construction materials?

To ensure the viability and safety of a construction project Signup and view all the answers

Which of the following is NOT a common type of laboratory testing for construction materials?

Aesthetic appeal testing Signup and view all the answers

Where does field testing of construction materials typically take place?

On construction sites, such as roadways, airports, and building developments Signup and view all the answers

Which type of testing is NOT mentioned in the text?

Electrical testing Signup and view all the answers

What is a common basic material used in construction, according to the text?

Wood Signup and view all the answers

Which of the following statements is NOT true regarding the importance of construction material testing?

It is primarily concerned with aesthetic considerations rather than safety Signup and view all the answers

What is the coefficient of thermal expansion for concrete compared to steel?

1.2 × 10^-5 Signup and view all the answers

What contributes to the protection of steel in corrosive environments when used in conjunction with concrete?

CH and alkalis in concrete Signup and view all the answers

According to the American Concrete Institute (ACI), how is workability of concrete defined?

The ease and homogeneity with which concrete can be mixed, placed, consolidated, and finished Signup and view all the answers

Why do concrete structures generally require lower maintenance compared to steel or wooden structures?

They do not require routine coating or painting for weathering protection Signup and view all the answers

How can concrete be applied in different methodologies according to the text?

Hand applied, poured, pumped, sprayed, grouted, shotcreted in tunnels Signup and view all the answers

What does ASTM (American Society for Testing Materials) consider workability of concrete to be?

The ease of manipulation with minimum homogeneity loss Signup and view all the answers