How to Calculate the Quantity of Asphalt in Road Construction

Asphalt is a mixture of aggregates, binder and filler, used for constructing and maintaining all kind of roads, parking areas but also play- and sport areas. Aggregates used for asphalt mixtures could be crushed rock, sand, gravel or slags. In order to bind the aggregates into a cohesive mixture a binder is used. Most commonly, bitumen is used as a binder. An average asphalt pavement consists of the road structure above the formation level which includes unbound and bituminous-bound materials. This gives the pavement the ability to distribute the loads of the traffic before it arrives at the formation level.

Quantity Calculation:

Breadth (B) = 8m

Depth of the road (W) = 15cm = 0.15m

Length (L) = 2km = 2000m

Therefore, the volume of asphalt = L x B x W = 2000 x 8 x 0.15 = 2400m3

Here, density of asphalt is taken as 2330kg/m3

Therefore, quantity of asphalt = volume of road section x density of asphalt

= 2400 x 2330 = 559200kg = 5592 tons (dividing by 1000).


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