the moisture condition in an exposed structure damaged by alskli-silica reaction

This study demonstrates the difficulty of attempting to exclude moisture from concrete in structures exposed to the weather, especially if they have been cracked by ASR. Once the concrete has gained moisture it does not easily dry out, even if there is a well-defined dry season. If a waterproofing treatment is applied, the moisture may be sealed into the concrete. If present, leaking internal drainage ducts may exacerbate the problem, and promote the accumulation of moisture.