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why is asphalt used to make a road surface

Why is asphalt used to make a road surface - Answers.com

Asphalt is used because primarily because it is cheaper than concrete. Asphalt is also more pliable, and can expand and contract in changing weather.

Advantages of Asphalt - EAPA

Asphalt road surfaces offer many benefits, including cost efficiency, reduction in .. These are increasingly used as a safety mechanism to make it easier for.

Porous Asphalt Is King of the Road - PaveGreen

Porous asphalt pavements are being used successfully throughout the United . few pavements are giving back more to the planet, making porous asphalt road royalty. . Under this porous asphalt pavement surface is a “recharge bed” built of.

History of Asphalt - National Asphalt Pavement Association

Called at various times asphalt pavement, blacktop, tarmac, macadam, plant mix, asphalt concrete, or bituminous . To construct his roads, McAdam used broken stone “which shall unite by its own angles so as to form a hard surface. .. Today, we need to build a plant that you can't see, you can't hear, and you can't smell.”.

Better Road Building Paves Way for Energy Savings

Oct 17, 2011 . Warm-mix asphalt placed in Yellowstone National Park helped build U.S. . is certainly the more visible road-building material, accounting for the surface of . The paving industry long has used asphalt emulsions for certain.

Why is there no alternative for paving roads with asphalt? - Quora

In addition, asphalt shingles and rubber tires can be used in asphalt pavements, keeping . water based alternative to asphalt to build greener roads) has an eco friendly . is manufactured with UV inhibitors its not hot like other paved surfaces.

What is the process of making an asphalt road? - Quora

If an asphalt pavement cracks at the surface (A in the figure), it is a fairly quick . a tack coat (usually an emulsion of asphalt cement) is used to glue the layers.

How Do You Build a Road? Wonderopolis

Feb 5, 2014 . What types of materials are used to build roads? Does it . Gravel is added in layers and machines roll over the surface to compact and flatten it further. . Asphalt uses an oil-based substance called bitumen to make sand and.

Why Use Asphalt Instead of Concrete? Dykes Paving and .

Though concrete once was used for paving roads, parking lots and other . and this simple, inexpensive task can increase the longevity of an asphalt surface.

Why are they Replacing All the Concrete Roads with Asphalt? Ask .

Aug 17, 2010 . Moreover, it takes less time to build a asphalt road than a concrete road. (Asphalt dries faster.) . It can be used again and again by melting it. .. The result provides a smooth, safe, durable, quiet surface for many years.

Concrete vs Asphalt Paving Benefits of Concrete Streets

Concrete is also the most-used manmade material in the world. . The surface of concrete is also better at preventing automobile skidding, keeping . much diesel fuel to make asphalt than it does to make concrete for a road designed for the.

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