Thousands of homes in the Northeast face crumbling concrete foundations due to hidden mineral
In short: Mason Mark McCullough investigates a widespread structural failure affecting homes across Western Massachusetts and Northern Connecticut. This video explains why foundations built over a nearly forty-year period are deteriorating and why this specific chemical culprit makes them lose their structural integrity.
Between 1980 and 2017, thousands of homes in Northern Connecticut and Western Massachusetts were constructed with concrete foundations containing pyrrhotite in the aggregate. This mineral inclusion triggers a slow, destructive process that compromises the concrete over time.
The damage typically manifests after roughly 20 years, causing the foundations to crumble until they are no longer structurally sound. The investigation highlights the significant long-term risks posed by this specific material defect in residential construction.
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Sources
- Summary by Intellect · source: Why Are These Concrete Foundations Crumbling? | Ask This Old House
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