For example you may want a new concrete floor in your basement to prevent water seepage.
Can concrete be poured on existing concrete.
One of the best tools that can be clean all the debris out of crack is a stiff bristle broom.
However this approach is not suitable option unless the existing concrete is in good shape structurally.
Choose a coarse aggregate concrete when pouring thicker slabs.
It is a good option if you need to fill a large area with something thick that will last a long time.
You can if the concrete is sound solid with minor cracks pitting scaling surface damage or just plain ugly.
This type of concrete is stronger but less dense so you can safely pour a large slab onto existing concrete.
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.
Whatever the reason you can pour a new concrete floor over existing concrete doing this will save you both time and money.
Concrete over concrete by.
Concrete surface suffers from wearing and damages over time disregard of its strength.
Cleaning old concrete surface.
For instance surfaces with larger cracks heaving or settling conditions or where height cannot be raised replacement is a better solution.
There are situations when pouring new concrete isn t the most suitable option.
Coarse concrete has gravel or larger stones as an additive.
Engineer if you are laying pouring concrete over existing concrete there needs to be a bond.
Pouring concrete over existing concrete sidewalk or patio surfaces is an option if the existing base is structurally sound.
Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.
You could drill holes into the existing concrete surface and insert steel pins and then the mesh on top.
When i say bond the concrete you are lying on top off needs to be a rough finish like scabbled.
Perhaps you want a new concrete floor for your garage but you don t want the expense of having the existing floor removed.
However in most cases you can pour a new layer of concrete onto the existing one.
Steps involved in pouring concrete over existing concrete slab step 1.
This includes removing sand dead leaves and gravel.