Hi all
I am looking for opinions. I poured a slab yesterday, ran anout 3/4 yard short, too late to get more, so there is an area that is partially filled. it is average of about 2″ thick. It is a woodshop and the owner does not care about the finish look much. Can I pour over the top and expect it to hold up over time or do I need the full 4 inches of fresh concrete.
HC
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Highlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
Personally, I wouldn't loose any sleep over it if using one of the patching compounds that has an additive to bite into the cured concrete. Someone with more concrete experience will surely have a more specific recommendation.
Unrelated to your issue, but interesting nonetheless, yesterday we had to remove a portion of a basement slab to install some new footings and found only 3/4"-1" (!) of concrete on the mostly crack-free slab. The house was essentially built over a natural gravel pit of coarse sand/gravel, providing an ideal base, and had plenty of time to settle before the "slab" was added in the 80s.
It was strange indeed to break an entire slab up with nothing but a framing hammer. It is also the most extreme example of how important compaction is to the survival of a slab. I'm a believer.
Frame up the shed before patching. Concrete will crack/bond better when the area is shaded. Wet the surface before pouring.
The shade will keep curing tempature lower and even.
Use a self-levelling compound that is designed to be that thick.
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
only thing is that those self leveling compounds are mad expensive~