Underpinning Slab Foundations New Haven, CT
Pyrrhotite causes the slow deterioration of the concrete when exposed to oxygen and water. Pyrrhotite is a sulphur stone found mainly in the New-Haven region and reacts strongly to moisture, air and oxygen. This highly harmful particulate oxidation reaction causes expansion in concrete, causing large cracks in foundations and other concrete structures. Sometimes, the chemical reaction of pyrite is so fast and important that in certain situations there is a risk that the base will collapse in a short time.
A rust colour remains or white powder may appear. The sheetrock walls of a finished basement may need to be separate to examine the concrete. The damage is irreversible at this stage you need experienced team of Underpinning Slab Foundations to solve this problem.