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If your use of the word "cement" actually means concrete, the answer is maybe?
Concrete may be placed on an existing concrete surface however you must proceed with caution! There are many floor leveling or topping products if you are merely trying to achieve a new look or raise an elevation slightly. This might be a better choice for you than placing new concrete directly on an existing concrete.
Why? Very smooth [ called steel troweled ] concrete has been finished to give a car showroom type appearance and is tough to get a bond to take. Heavy traffic will exacerbate the problem. The problem in obtaining a good bond for a patch or repair, or in the case, new over aged concrete is loss of water and premature hydration.
Your new concrete mix has a predetermined amount of water in the mix, based on conditions, temperature, wind, humidity, desired slump and strength, etc. Most often, water from the new concrete will be absorbed into the host material, thus decreasing the intended amount needed to properly hydrate your new material. When this happens shrinkage cracks and loss of bond occur. Slurry mixes or bonding agents are used to slow this absorption into the host material, but are sometimes not effective.
I recommend waterproofing the host material 48 hours before the new material is placed. Waterproofing the aged surface will stop moisture from wicking out of your fresh concrete and provide the bond needed. Very thin concrete overlays exposed to heavy traffic aren't recommended, best off to go with a leveling product! If you do use concrete, finish it off with a waterproofing application. This will waterproof the new surface and not allow moisture to penetrate down deep enough to compromise an already ify bond you may be dealing with.
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What is the blinding concrete?
a thin layer of lean concrete, keirkil fine, or sand applied to the surface to smooth the cavity in order to provide a dry cleaning or a more durable
What does sealing concrete do?
Concrete is usually alkaline and porous. Thus it may be attacked by acids - even mild ones such as milk!The porosity means that materials such as motor oil will be absorbed.Sealing the surface with an impermeable coating will help in avoiding these problems. This approach will work even better if the concrete surface has been made more dense and smooth by surface working before it has set.
How to improve the workability of concrete?
To improve the workability of concrete, issue to be concerned of as below: - increase water/cement ratio - increase size of aggregate - use well-rounded and smooth aggregate instead of irregular shape - increase the mixing time - increase the mixing temperature - use non-porous and saturated aggregate - with addition of air-entraining mixtures
How do you patch a hole in a cement wall?
Use a good quality cement and push the cement in as far as you can, if it a thru-hole, do the same on the inside, smooth one or both patches flush. If its below ground level apply a "Tar base material" to the patch after the cement dries, this will help in waterproofing the patch.
Why do houses have cement floors?
Cement is a durable material for most anything if it is formulated and finished right. Cement kitchen counters are popular right now. Cement can be stained, finished smooth or textured, painted and sealed to resist dirt or water. To get a great looking floor I would suggest a professional do the job.
What is difference between MS rods and TMT bars?
TMT Bars - High strength deformed steel bars used for concrete reinforcement. The surface has many short ribs to allow the concrete to adhere better than if the bars had a smooth surface.MS Rods - Mild Steel rods are used to construct many things (such as scaffold construction), but are not the best choice for concrete. The surface of the rod is smooth, so it does not allow the concrete to adhere as well as if the surface had a texture.
How do you remove concrete that was used to lay tiles on my concrete steps outside my front door so i have a smooth finnish to paint?
The only way is chipping and grinding, either way you usually will not end up with a smooth surface. I would chisel away the mortar the best I could then use a chemical that allows new concrete to stick to old. I would use cement and skim coat the surface so there is a new surface. Almost like a stucco mix, because you don't want a really smooth painted surface or you will have people slipping down on the concrete getting hurt. Or use an epoxy concrete paint and add sand for traction.
What does Trowel mean in concrete?
A trowel is a flat, steel tool with a handle, meant to "butter" on drywall grout, or to smooth the surface of newly-placed concrete, much like you smooth out the icing on top of a cake. "To trowel" means to smooth a concrete or grout surface, using a trowel.
Can you use hot glue to adhere plastic to wood?
Possibly if the wood has a very smooth surface
What surface will a ball bounce higher on?
on concrete because it is hard and smooth
What creates more friction, concrete or grass?
Grass. This is because carpet (grass or soil) has more friction than a smooth surface like tile (concrete).
How does the amount of heat energy reflected by a smooth dark-colored concrete surface compare with the amount of heat energy reflected by a smooth ligh-colored surface?
The dark coloured concrete surface absorbs more heat energy and therefore reflects less heat energy.
What type of glue do you use to lay stone tile?
You use thin set cement, a bit like very smooth concrete.
What is concrete pavement?
Concrete pavement is a type of pavement made from a mixture of cement, water, and aggregates such as sand and gravel. It is used in roads, sidewalks, driveways, and other outdoor surfaces due to its durability, strength, and long lifespan. Concrete pavement provides a smooth and stable surface for vehicles and pedestrians.
What are some of the tools to make concrete?
The most important tool needed when making concrete is a concrete mixer. Once the concrete is mixed and lain it is also important to have equipment to smooth out the surface.
Can rolled vinyl flooring be placed directly on top of leveling cement?
Yes as long as it is smooth and has no residue on the surface.
Why does some friction occur with seemingly smooth surfacers?
Because on the molecular level, they are not smooth No surface is perfectly smooth and even if it were, many molecules of the two surfaces would get close enough together to interact.
