In this conversation, John McIntyre, an expert in aquatic consulting, discusses the critical issue of Alkalized Silica Reaction (ASR) in pools. He explains the science behind ASR, its impact on pool structures compared to other constructions, and the factors that contribute to its occurrence. The conversation also covers how to identify ASR, potential solutions for affected pools, and best practices for prevention. McIntyre emphasizes the importance of using proper materials and construction techniques to mitigate the risks associated with ASR, as well as the evolving landscape of insurance responses to ASR claims.   takeaways

• ASR is a reaction between the alkalize in the cement and reactive minerals in aggregates.
• The reaction can take up to three years to become symptomatic.
• Spiderweb cracking is a key indicator of ASR in pools.
• Wet shotcrete is more prone to ASR than dry shotcrete.
• Geographic factors influence the prevalence of ASR cases.
• Proper testing of materials is crucial to prevent ASR.
• Insurance companies are beginning to pay out for ASR-related claims.
• Good construction practices can mitigate ASR risks.
• Educating pool builders on ASR is essential for prevention.
• The pool industry is facing a buyer beware market regarding ASR.