Search results
Results from the WOW.Com Content Network
Cement is an ingredient in concrete, which is a strong, weight-bearing material that’s used as the foundation of homes and in building highways, bridges, and dams. It’s also a common material ...
Concrete roadway in San Jose, California A concrete road in Ewing, New Jersey. Concrete surfaces (specifically, Portland cement concrete) are created using a concrete mix of Portland cement, coarse aggregate, sand, and water. In virtually all modern mixes there will also be various admixtures added to increase workability, reduce the required ...
Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam 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. [2]
An example of composite pavement: hot-mix asphalt overlaid onto Portland cement concrete pavement (from Road surface) Image 41 Concrete roadway in San Jose , California (from Road surface ) Image 42 Speed limits in different areas; here unusually with only a "recommended" limit ( Richtgeschwindigkeit ) of 130 km/h on the Autobahn in Germany ...
Asphalt road in Norway A road is a thoroughfare , route, or way on land between two places that has been surfaced or otherwise improved to allow travel by foot or some form of conveyance , including a motor vehicle , cart, bicycle, or horse.
In flexible pavements, the upper layer consists of asphalt concrete, that is a construction aggregate with a bituminous binder. The wearing course is typically placed on the binder course which is then laid on the base course , which is normally placed on the subbase , which rests on the subgrade .
Usually constructed of concrete, pavers, brick, stone, or asphalt, it is designed for pedestrians. [5] A sidewalk is normally higher than the roadway, and separated from it by a curb. There may also be a planted strip between the sidewalk and the roadway and between the roadway and the adjacent land.
Highway engineering (also known as roadway engineering and street engineering) is a professional engineering discipline branching from the civil engineering subdiscipline of transportation engineering that involves the planning, design, construction, operation, and maintenance of roads, highways, streets, bridges, and tunnels to ensure safe and effective transportation of people and goods.