Cleaning old concrete surface.
Can you pour concrete over old concrete steps.
The condition of the existing slab is the primary factor that determines how long the new concrete will last.
If you get some of the mixture on your skin rinse the affected area under cool water.
Pour the resurfacing concrete over your old concrete.
Steps involved in pouring concrete over existing concrete slab step 1.
Water soaks into the concrete freezes.
Be sure to cover all of the concrete evenly.
If done properly new concrete can often be poured right over an existing slab.
One of the best tools that can be clean all the debris out of crack is a stiff bristle broom.
The old concrete needs to be completely clean or else anything you pour over it won t bond to it.
The fix will be durable and you avoid the high expense of a complete tear out.
Finishing after pouring the finishing concrete smooth it out with a finishing trowel or a long handled industrial squeegee.
There are cases when pouring new concrete over old just isn t a viable solution.
A well poured concrete slab with a deep sturdy foundation can last for 30 to 40 years.
This includes removing sand dead leaves and gravel.
Cutting away the damaged concrete and pouring a new concrete cap on the step can often repair badly broken concrete steps.
For instance if concrete stairs are not the correct size are too small or are different sizes you can pour new concrete over them instead of redoing the entire structure.
You can alter small exterior concrete steps extending from a patio or directly from a home.
Pouring new concrete s.
If you re concrete has large cracks and the slab may still be moving due to freeze and thaw conditions or settling then a tear out and replace is a better solution.
Sweeping dirt s debris over the existing concrete slab will allow bonding to take place.
Push the debris off the concrete surface or collect it in a bag to throw away.
Pour the acid mixture over the old concrete.
For this to be feasible the contractor needs to pour at least 2 inches thick use smaller aggregate and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.
Concrete steps break up especially in northern climates.
Get as much of it off the concrete as you can.
Pouring concrete over old concrete instead of directly over a new gravel foundation limits your ability to maximize the slab s lifespan.