What is the diffrence between a$falt, pavement, and cement?

Question

arent they all the same thing

Answer 1

cement is made of natural materials like sand or clay and make concrete, asphault is made out of same stuff that makes keroscene and is use for airports and parking lots and pavement by definition is hard surface that bears travel

Answer 2

Asphalt is what is used on roads,cement used for the sidewalks.In my case I live in an older area & currently have asphalt sidewalks & streets.We've just been notified that the city will upgrade our sidewalks to cement,at a cost of $2500 per homeowner.51% of us have to agree to this upgrade,but the city will probably do it anyways,although our sidewalks are still in good shape.Asphalt can be "pavement" & the same with cement.

Answer 3

Who cares honestly. It all hurts if you fall face 1st anyways.

Answer 4

They are intended to "do" the same thing but are not the same.

"Pavement" is the generic word for any road surface. While cobblestone or inch minus gravel or concrete paver's are different, all are considered pavement when used as a traffic road surface!

Asphalt paving is a road surface of a number of mixed materials  applied in two basic techniques. Applied either hot or cold. Asphalt is a mix of an aggregate and to simplify things, "tar". Tar is a black bitumen by-product of oil refining for the generation of fuel. It is the last remaining sludge after all the different fuels are refined from crude oil. This thick, viscous tar when heated becomes plastic and more easily mixed and applied and compressed flat to create a road surface. Most roads are applied on compressed and packed native subgrades though in situations of non-stable foundations, a base of gravel is used to stabilize the final road structure.

Concrete on the other hand is a mixture of Portland cement, gravel and sand. Concrete is as you know, mixed with water into a slurry and applied, flat worked and cures into a hard surface. Concrete lends itself to be a better stand-alone surface that is more flexible to being applied to varied conditions and sub straits. Concrete is strong but only under compression, so it must be reinforced (commonly, by a steel mesh or rod structure embedded in the concrete structure). Hope this helps.

Answer 5

Leftover oil sludge,or leftover coal ash mixed in concrete. Both use leftover pollution from oil or coal ash,have to get rid of somewhere.

Answer 6

asphault is a by product of oil. It is basically the left overs after oil has been refined.

Answer 7

As far as I know they are all the same thing.

Answer 8

Most of both forms of pavement are stone. Little chips  of stone held together with a binder.

Concrete is held together with a binder that is made of sand and portland cement. It is very non-flexible. must be supported on a very firm base .

Recycling concrete is possible, by crushing it and adding a new binder, but this is rarely done because the old binder will lead to early failure.

Asphalt is much more flexible, and while fairly new will bend to follow a subsidence in the road bed. Frequently the binder, made of oil or coal processing residues is merely heated again to  make it into a new pavement, after it has been used for decades,

Concrete is often covdered with a layer of asphalt to smooth out the harsh jolt that occurs at the end of one section of concrete and the beginning of the next.

One observation about concrete paving, as a heavy truck passes over, the place the truck is on last will go down, leaving the surface a repeating sequence of sharp up and gradual down. Putting Asphalt over it mitigates that, but one still feels the bumps through the asphalt.