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The corner of my driveway has broken off due to vehicles running it over and there is some washout underneath. It's probably missing about one square foot.
My question is, what if I busted up the broken concrete and added it into my mix when making the repair? Will it still be structurally sound or would this make the repair weak? I just don't see the point of throwing away the busted pieces if I could get good use from them.
It's possible to reuse scrap but honestly, I'd use all new mix. Make sure it's a suitable choice for exposed, load-bearing use (that is, not fence post concrete or for molding purposes). A mix intended for repair, plus some rebar driven hard under the old slab etc., is a good idea.
Concrete aggregate is between 3/8 and 3/4 of an inch and washed, so you think you can break and reuse it in a mix? I would say no!
If you really want to get some exercise with a sledge hammer and break the concrete into small pieces, it would be suitable for a compacted base under the new concrete.
Concrete aggregate is between 3/8 and 3/4 of an inch and washed, so you think you can break and reuse it in a mix? I would say no!
If you really want to get some exercise with a sledge hammer and break the concrete into small pieces, it would be suitable for a compacted base under the new concrete.
The corner of my driveway has broken off due to vehicles running it over and there is some washout underneath. It's probably missing about one square foot.
My question is, what if I busted up the broken concrete and added it into my mix when making the repair? Will it still be structurally sound or would this make the repair weak? I just don't see the point of throwing away the busted pieces if I could get good use from them.
As stated above- use old stuff for base- but more importantly, dowel-in some rebar and use a bonding agent where the old broke off before placing the new concrete.
As stated above- use old stuff for base- but more importantly, dowel-in some rebar and use a bonding agent where the old broke off before placing the new concrete.
Drilled in dowels, A must, without a doubt!
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