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← ScienceWhich consequence results when rapid desiccation affects concrete?
A)Ionic bridging reduces fracture toughness.✓
B)Covalent polymerization strengthens cement matrix.
C)Hydrogen bonding increases material ductility.
D)Metallic bonding increases compressive strength.
💡 Explanation
Rapid desiccation causes shrinkage, leading to microcracks; therefore ionic bridging weakens the cement past a point of structural failure, rather than strengthening mechanisms or ductility caused by hydrogen or metallic bonding.
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