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Yes, if the base is stable the new layer will bond and create a new, fresh surface.
An unstable base will give bad results. You should pressure wash the old concrete to get rid of loose and spalling concrete and you should use a bonding agent to serve as a primer to get the new layer to bond well to the old.
Obviously, if the new concrete is laid over concrete that is subsiding because of a sinking foundation, the new concrete will crack. You need to stabilize the old concrete before pouring new over it.
If you put new over old, it needs to be at least a couple inches thick else it will not cure properly. If you simply want to improve the surface, there are special self-levelling concrete mixes that can be poured thinner and still be strong. Take a look at the link below for a good how-to.
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Can you pour concrete on old concrete?
not normally. it depends on what you are trying to accomplish. if you need a thin layer than you can pour a thin set layer which hardens and adheres better than concrete. if the added part is thicker you can drill holes in the old and put re bar in then pour on top to help tie the two together.
Can Cement be put on top of cement?
If the question means: "can new concrete or mortar be put on top of old concrete", for example to restore a reinforced concrete structure, the answer is NO. You will have to use proprietary non shrinking cementitious mortars (say Emaco or similar), otherwise the patch will fall to the ground ! vAR - Roma, Italy Yes you can! However first check the pH of the concrete to insure it is no higher than the number 9ph. If pH is between 7.5 and 9ph you are ready to repair. Apply a densifier to the concrete and resurface with a high performance repair material or overlay. JH Super-Krete
Can you put osb board on top of concrete so that carpet can be laid on top of it?
Not really a good idea. The water over time from the concrete will cause the board damage. If you use a good pad there is no reason you cannot lay the carpet over concrete.
Can you pour a concrete sidewalk over top of another existing concrete sidewalk?
No do to the concrete settling the concrete on top would split
How do you increase an existing concrete slabs thickness?
You must form on top of the existing slab and drill in anchors to join the new concrete to the old this is called a cap
Can you get a handprint off concrete?
pour more concrete over the top and smooth it out
Can you pour concrete on old concrete?
not normally. it depends on what you are trying to accomplish. if you need a thin layer than you can pour a thin set layer which hardens and adheres better than concrete. if the added part is thicker you can drill holes in the old and put re bar in then pour on top to help tie the two together.
On the sims 2 PC how do you put flowers on top off concrete?
Use the moveobjects on cheat and click on your flowers and place it on the concrete
What can you put on top of a crushed concrete driveway?
Pea gravel, crushed granite or asphalt.
Can Cement be put on top of cement?
If the question means: "can new concrete or mortar be put on top of old concrete", for example to restore a reinforced concrete structure, the answer is NO. You will have to use proprietary non shrinking cementitious mortars (say Emaco or similar), otherwise the patch will fall to the ground ! vAR - Roma, Italy Yes you can! However first check the pH of the concrete to insure it is no higher than the number 9ph. If pH is between 7.5 and 9ph you are ready to repair. Apply a densifier to the concrete and resurface with a high performance repair material or overlay. JH Super-Krete
Can you put osb board on top of concrete so that carpet can be laid on top of it?
Not really a good idea. The water over time from the concrete will cause the board damage. If you use a good pad there is no reason you cannot lay the carpet over concrete.
Can you pour a concrete sidewalk over top of another existing concrete sidewalk?
No do to the concrete settling the concrete on top would split
How do you increase an existing concrete slabs thickness?
You must form on top of the existing slab and drill in anchors to join the new concrete to the old this is called a cap
Can you put the new liner on top of the old one?
The answer is no. Vinyl liner pools and the concrete deck around the pool are constructed with "concrete receptor coping". The concrete deck is poured into the receptor coping which at the very bottom has was is called a "bead receptor". The vinyl liner at the top has what we call a bead, used to install the liner into the bead receptor. Because there is, and can be, only one bead receptor, a second liner cannot be installed.
How do you pour concrete on old concrete?
What you need to do first is to check if you have that room near the threshold of the door for that extra concrete(which is minimum of 3.5" inches) then you need to remove the top surface of the old concrete to be rough surface don't break too much just about an 1"wash clean and let it dry and only then to install the new concrete.
Where do concrete words sit on the ladder of abstraction?
Concrete words are placed lower on the ladder, and more abstract terms are placed higher, or closer to the top.
What is lean concrete?
A lean mix simply means that there is more liquid that concrete in the mix. The mix is thin and pours easier. It is sometimes used when you need to make a base on an uneven surface, like dirt. You would pour the lean mix, and then use it to put the more solid mix on top of.
