Question:
The two major constituents of Portland cement are:
The two major constituents of Portland cement are:
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Remember CaO and SiO\(_2\) as the backbone of cement chemistry — both contribute to setting and strength.
Updated On: May 20, 2025
- CaO, SiO\(_2\)
- CaO, Al\(_2\)O\(_3\)
- SiO\(_2\), MgO
- CaO, MgO
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The Correct Option is A
Solution and Explanation
Portland cement is primarily composed of:
- Calcium oxide (CaO) — provides strength and structure.
- Silicon dioxide (SiO\(_2\)) — forms silicates which contribute to the hardness.
Other minor components include Al\(_2\)O\(_3\), Fe\(_2\)O\(_3\), and MgO, but they are not major constituents.
- Calcium oxide (CaO) — provides strength and structure.
- Silicon dioxide (SiO\(_2\)) — forms silicates which contribute to the hardness.
Other minor components include Al\(_2\)O\(_3\), Fe\(_2\)O\(_3\), and MgO, but they are not major constituents.
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