Asphalt Over Concrete Highway

A concrete pavement that moves will damage any asphalt overlay over time.

Asphalt over concrete highway.

Homeowners can benefit from this whitetopping technique to reduce labor costs and time when replacing worn asphalt driveways. A vehicle when run over a concrete road consumes 15 20 less fuel than that on asphalt roads. If you are looking to add asphalt over concrete you will need to make sure you have a stable concrete surface below with no expannsion joint shifting to make a proper base for overlay. More over during this service life concrete road do not require frequent repair or patching work like asphalt roads.

The truth about asphalt over concrete. Compare pros and cons of each to discover which is best for your driveway or parking lot walkway patio road and more. Asphalt concrete commonly called asphalt blacktop or pavement in north america and tarmac bitumen macadam or rolled asphalt in the united kingdom and the republic of ireland is a composite material commonly used to surface roads parking lots airports and the core of embankment dams. It will however require a little more maintenance than a typical asphalt overlay.

The basic durability of the asphalt material used for the overlay is covered by road note 42. Concrete paved surfaces are not compressed and compacted like asphalt is rather the concrete adheres and fills voids and irregularities with the soil and subgrade beneath it. This is because of the fact that a concrete road does not get deflected under the wheels of loaded trucks. Concrete expansion over time may cause reflective cracks.

To save time and money many states and municipalities use a road repair technique known as whitetopping the process of pouring concrete over asphalt rather than removing the existing asphalt. An asphalt overlay is cheaper to install than replacing concrete and can provide a smooth ride over deteriorating concrete. Asphalt overlay is an option for some asphalt surfaces that are in disrepair but paving asphalt over concrete comes with some catches. Putting asphalt over concrete is done for several reasons but does have its drawbacks.

Homeadvisor s asphalt vs concrete driveway guide compares difference between blacktop pavement and cement including costs length of life paving appearance stamped ornamentation and more. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century.