Question
The percentage of MgO in cement is calculated using:
The correct answer is
Weight of residue $ \times $ 32.4
Cement MgO Calculation
The percentage of Magnesium Oxide (MgO) in a cement sample is determined using a standard calculation based on the weight of a specific residue obtained during chemical analysis.
MgO Percentage Formula
The calculation involves multiplying the weight of the residue by a specific conversion factor. The standard formula is:
Percentage of MgO = Weight of residue $ \times $ 32.4
Here, the Weight of residue is typically measured in grams, and the factor 32.4 is a constant derived from the stoichiometry and molecular weights involved in the reaction used to determine MgO content, ensuring the final result is expressed as a percentage (%) of the original cement sample.
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Important Questions from Testing, Types of Cement
- Which one of the following statements is $not$ correct regarding the fineness of cement?
- Match the following lists:Select the correct answer using the code given below:
List-I (Types of cement) List-II (Uses) P. Rapid hardening 1. Repair of bridges Q. Quick-setting 2. Dams R. High alumina 3. Concrete under water S. Low-heat 4. Refractory concrete in industries - The approximate composition of CaO in Portland cement is in the range of:
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