Shrinkage cracks in a poured concrete foundation can be diagonal or vertical and are usually uniform in width.
Pour concrete over rock wall.
Sometimes these cracks have a v shape less frequent with the top of the crack looking larger and the crack getting smaller as it travels towards to floor and diminishing or stopping before reaching the bottom of the foundation wall.
If you make a cement retaining wall you can set rocks against the wall as you pour the cement you can create a rock wall.
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And if a wall is chipping or crumbling it s fair to say the bag was taken off way to early.
It sure is ok to put concrete against stone foundation i guess u mean something like plaster and not new wall just make sure to add good quantity of concrete against stones so that it binds stones.
Won t this be a problem for the quality of concrete in my footings.
1 i have been doing these walls for 30 years.
You cannot do this on a high wall as you have to pop the form with the cement is not fully dry or you can t get it off the rocks.
Marilyn the big trick is going to make sure that it is level to start with and frame it out.
Yes you can put concrete over river rock.
You may want to bring some sand in to help level.
Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan.
3 that video above with the guy putting steel in the bags is my video.
4 i can disprove your theory that the concrete will not set up correct due to water ratios.
2 i have tested several types of bags.
A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years.
The condition of the existing slab is the primary factor that determines how long the new concrete will last.
Then once you have it all prepared and ready to pour.
All the pre cast concrete panels and pre cast concrete slabs 26 are interlocked together by the introduction of steel bars 28 through links 8 extending from the pre cast concrete panels adding wire mesh 38 and top bars 40 on the pre cast concrete slab and pouring concrete over the steel bars wire mesh and top bars to provide a.