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← ScienceWhich consequence results from excessive hydration of cement?
A)Formation of expansive sulfate phases✓
B)Reduced carbonation penetration rate
C)Accelerated chloride ion diffusion
D)Increased resistance to freeze-thaw
💡 Explanation
Excessive hydration causes an increase in hydroxide ions resulting in the precipitation of calcium hydroxide and leading to the **formation of expansive sulfate phases**, because the ettringite structure is destabilized. Therefore, expansion and cracking occur, rather than improved durability.
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