[Theoria]

FYI. Sad to see this.

[fella]

Jack the house up and poor a new slab with some piers under it. Jack up the contractors and the government building inspectors too.

[Mamzelle]

Jack up the houses, start fixing the foundations. Rebar, concrete...if people can move a house, they can put in a new foundation.

[taildragger]

"The stone aggregate used in the concrete mixture has high levels of pyrrhotite, an iron sulfide mineral that can react with oxygen and water to cause swelling and cracking. Over the past 30 years, the quarry has provided concrete for as many as 20,000 houses."

And the runways at Detroit Metro were failing prematurely because the EPA would not let them add coal ash anymore as additive to prevent the cracking and swelling.

So, is this a factor here as well? Is road grade concrete that much different than foundations?

[Little Pig]

Would homeowner insurance cover something like this?

[Cvengr]

Most likely was the sand, rather than the aggregate used in the concrete. Sand taken from saltwater prone areas tends to be high in calcites. When mixed with cement and water, it tends to form CaCO3 over the years and expands within the concrete mix, causing concrete spalling and strength reduction.

[SuperLuminal]

Unions control CT.

[trebb]

Sad state of affairs. Ironic too since an old concrete guy I knew used to say that good concrete kept getting stronger for the first hundred years and started falling apart over the second hundred years.

[Dirt for sale]

Houses built on piers looking pretty good right about now.