SPALLING

While the world isn’t ending, this concrete is moving.  A void has developed under the slab, which in turn has allowed the slab to flex as traffic goes by.  There are many factors that can cause the initial void, but at this point water will expand the damage.  Water gets under the slab and fills the void, then traffic travels across pushing out the water.  This water contains some of the base material, which means the void increases in size as each vehicle passes.  This damage spreads out, slowly destroying the pavement as it goes.

Our process can stop the spread by a process we call stitch grouting.  We drill holes on either side of the joint and pump our cementitious grout to displace any water and replace the lost base.  There could be some additional steps depending on usage, but that’s about it.  Sometimes you can even avoid the spalling if you are very observant.  If you are walking on a street or drive and notice a lot of sand(especially at the joints), then it’s possible this process could be in the beginning stages.