So here is a basic process for pouring your concrete floor.
Pour concrete on existing concrete floor.
You just have to consider the added height.
Smooth the surface using a two by four or float then add texture as desired using tools or a broom.
Normally you would jackhammer the old concrete out and do it right.
Step 5 pour the concrete over the old floor and spread it over the surface with a rake.
Prepare enough concrete to pour a 1 to 2 inch layer over the old floor.
Pour a floating concrete floor.
Pouring concrete over existing concrete sidewalk when pouring new mix over old concrete make the mixture stiffer than usual by adding less water.
The cleaner it is the better bond you will achieve with the new concrete.
We had a building that had an existing concrete floor that was poured directly on the ground.
In a concrete mixer add cement aggregate sand and water as directed on the concrete package instructions.
The thickness of the slab is designed.
You could drill holes into the existing concrete surface and insert steel pins and then the mesh on top.
Over the years it had cracked.
Clean your existing floor.
Sweep your existing floor clean from dirt and debris.
When i say bond the concrete you are lying on top off needs to be a rough finish like scabbled.
If the slabs bond together any cracks or damage in the old surface will spread to the new surface.
This is because if the new layer is poured directly onto the existing slab the two slabs will bond together.
However the building supports were placed directly on to.
Measure the perimeter of the area to pour the concrete over the existing slab.
If you are laying pouring concrete over existing concrete there needs to be a bond.
When laying new concrete over an existing slab it s important to separate the two layers.
Spread the new concrete over the surface filling the entire area within the form you created.
Pouring concrete over an existing concrete driveway or sidewalk the same principles as above apply to pouring concrete over an existing concrete driveway or sidewalk.
You can if the concrete is sound solid with minor cracks pitting scaling surface damage or just plain ugly.