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