PYRITE

Pyrite is a mineral that can be found in the crushed stone used as fill under concrete slabs in garages and basements of houses. In the presence of moisture and oxygen, pyrite oxidizes and causes swelling of the stone embankment.

SYMPTOMS

By inflating, the stone exerts pressure on the slab in the basement or garage that lifts and cracks. The cracks are often observed in a cross or star. White powder can be detected in it. The pressure exerted on the slab can also result in cracked walls of the garage and cause major problems.

THE SOLUTION PIEUX METROPOLITAIN

The complete reconstruction of the slab.

Since the problem comes from the contaminated fill, the only solution is to undo the concrete slab and remove the stone embankment and replace it with a stone DB certified to the requirements of a domestic foundation. The concrete slab is then rebuilt safely.

The main signs of a problem of pyrite:

The solution Pieux Metropolitain:

   Click here