Traditional Culture Encyclopedia - Traditional virtues - Effect of aluminum salt on working performance of magnesium potassium phosphate cement
Effect of aluminum salt on working performance of magnesium potassium phosphate cement
1, setting time and strength: magnesium phosphate cement is made by sintering magnesium oxide, phosphate and retarder (borate) in proportion. Magnesium phosphate cement has fast setting and hardening and high strength.
2. Water resistance: The content of hydration products of magnesium phosphate cement has a great influence on the water resistance of magnesium phosphate cement. Whether in still water or running water, its strength will be greatly reduced, and the strength retention rate is low, which shows that the water resistance of magnesium phosphate cement is poor.
3. workability: the hydration reaction of traditional potassium magnesium phosphate cement is rapid. If there is no additive, it will solidify and harden in a few minutes, resulting in the loss of strength and workability, which is a great difficulty for practical engineering application.
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