Slab poured over exsisting slab new slab eroded by water underneath gap
I will try to get a picture up tomorrow. I was digging around my foundation and discovered that when my addition was built they poured the new slab over the existing slab. There is a gab between the 2 slabs 1"+ tall by a few feet long and a few inches deep. This was covered by mud. The bottom of the new slab appears to have eroded by water.
What is the best way to repair this?
My slab is level on the inside, no cracks. So there are no structural issues.
I just want to prevent any critters from getting inside and cover up this ugly sight and prevent any future issues.