How old is the house? Was this slab poured when the house was built? What distance from the house is the slab? Usually the foundation excavation is about four feet outside the house edge and the excavation may have settled. This is normal.
I have used a grout pump to fill voids like this.
Start by drilling a couple of holes in the concrete to accept the nozzle of the grout pump. Mix the non-shrink grout to a watery consistency and pump it into the holes.
This method, if done properly with threaded anchors, would even allow for you to jack the slab if it is off level.
In order to do that, you need to drill and insert some threaded anchors which wedge into the slab and accept a threaded connection to the grout pump. It usually takes more holes to jack the slab than to simply fill it.
An alternative is to find an outfit locally which does this professionally, but they might cost a few bucks.
I have used a grout pump to fill voids like this.
Start by drilling a couple of holes in the concrete to accept the nozzle of the grout pump. Mix the non-shrink grout to a watery consistency and pump it into the holes.
This method, if done properly with threaded anchors, would even allow for you to jack the slab if it is off level.
In order to do that, you need to drill and insert some threaded anchors which wedge into the slab and accept a threaded connection to the grout pump. It usually takes more holes to jack the slab than to simply fill it.
An alternative is to find an outfit locally which does this professionally, but they might cost a few bucks.
