Question:
Which of the following is not present in Portland cement?
Which of the following is not present in Portland cement?
Updated On: Jun 17, 2022
- $Ca _{2} SiO _{4}$
- $Ca _{3} SiO _{5}$
- $Ca _{3}\left( PO _{4}\right)_{2}$
- $Ca _{3} Al _{2} O _{6}$
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The Correct Option is C
Solution and Explanation
Portland cement gets its strength from chemical reactions between the cement and water. The process is known as hydration.
Chemical composition of portland cements are-
$Ca _{3} Al _{2} O _{6}$
$Ca _{3} SiO _{5}$
$Ca _{2} SiO _{4}$
$Na _{2} O$
$K _{2} O$
$CaSO _{4} \cdot 2 H _{2} O$
$Ca _{4} Al _{2} Fe _{2} O _{10}$
Chemical composition of portland cements are-
$Ca _{3} Al _{2} O _{6}$
$Ca _{3} SiO _{5}$
$Ca _{2} SiO _{4}$
$Na _{2} O$
$K _{2} O$
$CaSO _{4} \cdot 2 H _{2} O$
$Ca _{4} Al _{2} Fe _{2} O _{10}$
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Concepts Used:
Group 2 Elements
The group two or alkaline earth metals are s-block elements with two electrons in their s-orbital. They are alkaline earth metals. They are named so because of the alkaline nature of the hydroxides and oxides.
Alkaline earth metals are characterized by two s-electrons. This group of elements includes:
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Elements whose atoms have their s-subshell filled with their two valence electrons are called alkaline earth metals. Their general electronic configuration is [Noble gas] ns2. They occupy the second column of the periodic table and so-called as group two metals also.