Portland Cement In Building Materials - Portland Cement In Building Materials objective questions and answers


31.  The silica in Portland cement should be


   A. 10 to 20%

   B. 20 to 25%

   C. 35 to 40%

   D. 40 to 60%


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B. 20 to 25%

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32.  The percentage of the slag component of Portland slag cement varies from


   A. 10 to 40%

   B. 40 to 70%

   C. 70 to 80%

   D. 80 to 90%


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B. 40 to 70%

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33.  The additional of Pozzolona to Portland cement causes


   A. Less heat of hydration

   B. Increase in shrinkage

   C. Decrease in permeability

   D. All of the above


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D. All of the above

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34.  The expansion in Portland cement can be tested by


   A. Fineness test

   B. Soundness test

   C. Setting time test

   D. Normal consistency test


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B. Soundness test

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35.  The specific gravity of Portland cement is


   A. 1.15

   B. 2.15

   C. 3.15

   D. 4.15


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C. 3.15

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