Efflorescence and ASR (Alkali-Silica Reaction)
Efflorescence and ASR are indicators of chemical reactions inside concrete that compromise long-term performance. They often appear as white stains or cracking — but signal deeper issues affecting the concrete’s core integrity.
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What Causes Efflorescence & ASR?
These conditions stem from moisture and reactive minerals within the concrete. ASR occurs when silica in the aggregate reacts with alkalis in the cement, producing an expansive gel that cracks the concrete. Efflorescence results from salt-laden water evaporating from the surface.
- White or chalky surface staining
- Cracks forming without visible cause
- Internal pressure buildup and surface spalling
- Moisture movement and chemical transport inside the slab
Chemical Reactions Can Break Concrete from the Inside
ASR and efflorescence aren’t just aesthetic issues — they reveal deeper chemical degradation. Left untreated, these processes weaken concrete’s tensile strength and reduce its durability in critical areas.
Recommended Solution
For effective mitigation, SRN recommends targeted ASR Mitigation solutions to neutralize chemical reactions and preserve long-term performance.
Learn About ASR MitigationDon’t Let Reactions Weaken Your Structure
Whether you’re seeing cracks or discoloration, it’s time to get your concrete evaluated. SRN’s network of engineers and contractors can help you take action before damage spreads.
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