5 Questions
What is concrete made of?
Cement and various mineral aggregates mixed with water
What is the primary ingredient in Portland cement?
A calcined mixture of clay and limestone
Which type of Portland cement is used for reduced curing?
High Early Strength
What does it mean to calcine a substance?
To heat a substance to a high temperature without melting to drive off volatile matter
When is Moderate Sulfate Resistance Portland cement used?
In contact with water with sulfate present
Study Notes
Concrete Composition
- Concrete is made of cement, water, aggregates (such as sand, gravel, crushed stone), and sometimes supplementary cementitious materials.
Portland Cement
- Primary ingredient in Portland cement is limestone.
- Type III Portland cement is used for reduced curing time.
Calcination
- Calcining a substance means heating it to a high temperature to remove impurities or achieve a desired chemical reaction.
Moderate Sulfate Resistance
- Moderate Sulfate Resistance Portland cement is used in environments where sulfate attacks on concrete are moderate, such as in soils and groundwater with moderate sulfate content.
Test your knowledge of concrete and cement with this quiz on building technology. Learn about the properties and composition of concrete, as well as the process of making Portland cement.
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