Hello!
In the middle of the house, I have a load-bearing wall that stands on an embedded sill. I plan to remove the sill and pour concrete to fill in the trench that will result, then place the new sill on the concrete at the same level as the existing slab. To avoid mixing so many bags of concrete, I'm considering whether it's possible to embed lightweight concrete slabs or lecablocks in the trench. Is this a good idea? You might still want a solid concrete layer at the top that is several centimeters thick, which would mean there is no space for the blocks?
I checked some datasheets for lecablocks and lightweight concrete slabs, and they can only withstand 3 MPa in compressive strength, which seems low to me. Is it sufficient?
Should I drill reinforcement pins into the existing slab/foundation to ensure the old and new concrete hold together? I was thinking of placing a reinforcement bar lengthwise in the trench.
I plan to use coarse concrete for the casting.
In the middle of the house, I have a load-bearing wall that stands on an embedded sill. I plan to remove the sill and pour concrete to fill in the trench that will result, then place the new sill on the concrete at the same level as the existing slab. To avoid mixing so many bags of concrete, I'm considering whether it's possible to embed lightweight concrete slabs or lecablocks in the trench. Is this a good idea? You might still want a solid concrete layer at the top that is several centimeters thick, which would mean there is no space for the blocks?
I checked some datasheets for lecablocks and lightweight concrete slabs, and they can only withstand 3 MPa in compressive strength, which seems low to me. Is it sufficient?
Should I drill reinforcement pins into the existing slab/foundation to ensure the old and new concrete hold together? I was thinking of placing a reinforcement bar lengthwise in the trench.
I plan to use coarse concrete for the casting.
It is an uninsulated slab with moisture migration. It would have been nice to avoid all the work, but it feels wrong to insert a new sill in the slab, despite the foam plastic spacer. But maybe I'm worrying unnecessarily?
I have now examined more closely and found that the depth of the sill is measured to be about 57 mm, which means it will be difficult to fit a block. Furthermore, it means the volume is less than I initially assumed. I should be able to manage a casting of 40 liters with just the drill and buckets.
Then you have to imagine that the wall stands on that sill and if you start to shovel away something, it may sink; such work requires a lot of knowledge about load-bearing, and there would probably be a lot of shoring against the ceiling so that nothing comes down. Are you thinking of laying a new floor,