My house in Phoenix had all the concrete poured in 1993, and there have been no issues with the slab until recently. About a year or two ago, I noticed a small area (probably the size of a nickel) of spalling on the side pavement. I didn't get around to patching it, but today I saw that it has expanded to about 1" in diameter. At the bottom of the spalling/divot, which is about a quarter to half an inch below the surface, I noticed some rust, which I assume is from the rebar poking through.
I’m looking for advice on how to fix this and prevent it from spreading. My initial thought is to use a rust converter.
Another concern is that there's a black ABS drain line running parallel under the slab at that exact spot, which was installed by my family during construction. The line connects to a drain by the gutters and drains to the front yard. Arizona doesn't get much rain, but should I check the line with a camera to see if it has cracked? I'm no plumber so I'm not sure if I'd even see something. If it has, I'm worried the damage could be worse underneath the slab than what I see on the surface.
Or am I overthinking this and should just focus on patching the visible damage? It seems unlikely to me that the ABS line would break with nothing around it, especially since the house sits on a vein of solid granite (no joke), which has lent itself to zero movement since construction.
I’m looking for advice on how to fix this and prevent it from spreading. My initial thought is to use a rust converter.
Another concern is that there's a black ABS drain line running parallel under the slab at that exact spot, which was installed by my family during construction. The line connects to a drain by the gutters and drains to the front yard. Arizona doesn't get much rain, but should I check the line with a camera to see if it has cracked? I'm no plumber so I'm not sure if I'd even see something. If it has, I'm worried the damage could be worse underneath the slab than what I see on the surface.
Or am I overthinking this and should just focus on patching the visible damage? It seems unlikely to me that the ABS line would break with nothing around it, especially since the house sits on a vein of solid granite (no joke), which has lent itself to zero movement since construction.
