Cement, a fine-grained binder which when mixed with fine aggregate, sand and water transforms into a paste that binds and hardens when submerged in water.
High quality cement is necessary for the production of mortar and concrete to satisfy relevant construction industry specifications.
• Consistency, initial and final setting time (Vicat method)
• Soundness of cement (le-Chatelier method)
• Specific gravity
• Chemical analysis of cement
• Flame photometry
• Loss on Ignition
CONSISTENCY, INITIAL AND FINAL SETTING TIME (VICAT METHOD)
The vicat test set determines the quantity of water required to produce a cement paste of standard consistency and setting time of cements.
Figure 18: Vicat apparatus
SOUNDNESS OF CEMENT (LE-CHATELIER METHOD)
The le chatelier method is used to determine the expansion of cement
Figure 19: Le – Chatelier mould
The Blaine apparatus is used to determine the fineness of cement
Figure 20: Blaine air permeability apparatus
The Le chatelier flask is used for determining the density of cement
Figure 21: Le-Chatelier flask
Chemical analysis plays an important part in the categorization of cement.
The flame photometer
is used to determine the constituent parts of cement
Figure 22: Flame photometer
LOSS ON IGNITION
The muffle furnace is used for determining the loss on ignition and insoluble residue of cement
Figure 23: Muffle Furnace