I have a carport which houses not only my truck but also has an area for my table saw, chainsaw sharpening stuff, etc. I poured the concrete floor probably 8 yr. ago now, and for the first time in concrete work I am seeing spalling in a couple of places, several feet square each. It is about a quarter inch in depth, the damage. I am wondering, from others who know more, if this is likely to get worse. I realize you'd have to see the stuff and know how I mixed and etc., but just in general, does spalling create surface damage and quit? Best case scenario, I mean.
Then, is there a way to repair it...I looked into various floor coatings [garage, basement] and it seems none of them are good for outdoors. Even with the roof over the carport, there will be some sunlight and occasional snow/rain in places. UV light is intense up here [8500 ft. elevation]. Since this is outside in my parking/work area, I am not too worried about how it will look after I do something to the bad areas. It does need to be fairly smooth so my table saw and etc. will roll ok across it.
I thought about experimenting with a mortar-sort of mix, sand and portland, but worry that it would not be strong enough for the car to drive over it and it would just break up or crumble eventually.
Then, is there a way to repair it...I looked into various floor coatings [garage, basement] and it seems none of them are good for outdoors. Even with the roof over the carport, there will be some sunlight and occasional snow/rain in places. UV light is intense up here [8500 ft. elevation]. Since this is outside in my parking/work area, I am not too worried about how it will look after I do something to the bad areas. It does need to be fairly smooth so my table saw and etc. will roll ok across it.
I thought about experimenting with a mortar-sort of mix, sand and portland, but worry that it would not be strong enough for the car to drive over it and it would just break up or crumble eventually.
To date, the largest spall repair in North America is a 5200 sqft at a new gas station in Michigan. Still looks new after four years. Absolutly no water used except to clean your tools. I know there are reps and dist. in CO. 
