Question:
The cement content in Low cement castables is
The cement content in Low cement castables is
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Low cement castables contain reduced cement content to improve high-temperature refractory properties.
Updated On: May 7, 2026
- Not more than \(2\%\)
- Not more than \(5\%\)
- Not more than \(7\%\)
- Not more than \(10\%\)
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The Correct Option is A
Solution and Explanation
Castables are unshaped refractory materials.
They are mixed with water and placed by casting.
Conventional castables contain higher amount of calcium aluminate cement.
Low cement castables contain a reduced amount of cement.
Reducing cement content improves high-temperature properties.
It reduces the amount of low-melting phases formed during firing.
It also improves strength, refractoriness, and corrosion resistance.
In the given classification of the question, the cement content in low cement castables is:
\[
\text{Not more than }2\%.
\]
Therefore, the correct option is:
\[
\text{Not more than }2\%.
\]
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