17 Questions
What is Portland cement primarily composed of?
Calcium silicates and calcium aluminates
What is the nature of all Portland cements?
Hydraulic
What is the result of the chemical reactions that occur when water is added to Portland cement?
The release of heat energy
What is formed when tricalcium silicate (C3S) and dicalcium silicate (C2S) react with water?
Calcium silicate hydrates (C-S-H) and calcium hydroxide (CH)
Why is Portland cement named as such?
It is named after the rock it resembles
What is the chemical formula for alumina?
Al2O3
What is the primary purpose of calcium sulfate in cement?
To slow down the setting action of cement
What is the result of excess sulfur trioxide in cement?
The corrosion of concrete structures
What type of cement is the most widely used?
Portland cement
What happens when excess magnesia is present in cement?
The strength of cement decreases
What is the result of excess alkaline matter in cement?
Efflorescence
What is the primary function of cement in construction?
To serve as a binding medium
What is the result of excess lime in cement?
Expansion and disintegration of the cement
What is the typical color of cement?
Gray
What is the process of producing cement called?
Calcination
What is the result of a deficiency in lime in cement?
Reduced strength and faster setting
What is the approximate percentage of silica in cement?
20% to 30%
Learn about the properties and production of cement, a crucial binding agent in construction projects worldwide. Discover its composition, calcination process, and importance in building.
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