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Cement in Construction

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Questions and Answers

What is Portland cement primarily composed of?

Magnesium silicates and magnesium aluminates

Calcium silicates and calcium aluminates (correct)

Calcium carbonates and calcium oxides

Silicon dioxide and calcium hydroxide

What is the nature of all Portland cements?

Exothermic

Hydraulic (correct)

Endothermic

Non-hydraulic

What is the result of the chemical reactions that occur when water is added to Portland cement?

The release of heat energy (correct)

The absorption of heat energy

The release of carbon dioxide

The formation of calcium carbonate

What is formed when tricalcium silicate (C3S) and dicalcium silicate (C2S) react with water?

Calcium silicate hydrates (C-S-H) and calcium hydroxide (CH) (D) Signup and view all the answers

Why is Portland cement named as such?

It is named after the rock it resembles (A) Signup and view all the answers

What is the chemical formula for alumina?

Al2O3 (C) Signup and view all the answers

What is the primary purpose of calcium sulfate in cement?

To slow down the setting action of cement (D) Signup and view all the answers

What is the result of excess sulfur trioxide in cement?

The corrosion of concrete structures (D) Signup and view all the answers

What type of cement is the most widely used?

Portland cement (A) Signup and view all the answers

What happens when excess magnesia is present in cement?

The strength of cement decreases (C) Signup and view all the answers

What is the result of excess alkaline matter in cement?

Efflorescence (A) Signup and view all the answers

What is the primary function of cement in construction?

To serve as a binding medium (A) Signup and view all the answers

What is the result of excess lime in cement?

Expansion and disintegration of the cement (D) Signup and view all the answers

Cement in Construction

Choose a study mode

Podcast

Questions and Answers

What is Portland cement primarily composed of?

What is the nature of all Portland cements?

What is the result of the chemical reactions that occur when water is added to Portland cement?

What is formed when tricalcium silicate (C3S) and dicalcium silicate (C2S) react with water?

Why is Portland cement named as such?

What is the chemical formula for alumina?

What is the primary purpose of calcium sulfate in cement?

What is the result of excess sulfur trioxide in cement?

What type of cement is the most widely used?

What happens when excess magnesia is present in cement?

What is the result of excess alkaline matter in cement?

What is the primary function of cement in construction?

What is the result of excess lime in cement?

What is the typical color of cement?

What is the process of producing cement called?

What is the result of a deficiency in lime in cement?

What is the approximate percentage of silica in cement?

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