Correct match of Column I (types of cement) with Column II (properties or preparation) is
|
Column I |
Column II |
||
|
P. |
Portland pozzolana cement |
1 |
Ordinary porland cement with less than 5% tricalcium aluminate |
|
Q. |
Sulphate-resisting porland cement |
2 |
Contains 25 to 60% slag which offers good sulphate resistance |
|
R. |
Portland slag cement |
3 |
Grinding the clinkers with oleic acid |
|
S. |
Hydrophobic cement |
4 |
Requires longer curing time than ordinary portland cement |
• Portland pozzolana cement Requires longer curing time than Ordinary Portland cement.
• Sulphate-resisting Portland cement - Ordinary Portland cement with less than 5% tricalcium aluminate.
• Portland slag cement - Contains 25 to 60% slag which offers good sulphate resistance.
• Hydrophobic cement has characteristic as grinding the clinkers with oleic acid.
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