An asphalt concrete mixture includes 94% aggregates by weight. The specific gravity of aggregate and asphalt are 2.7 and 1.0, respectively. If the bulk density of the mix is 2.317 g/cm3, what is the percent voids in the total mix?

The correct solution is "5.74%".

Explanation:

The given values are:

Gravity of aggregate,

Gravity of asphalt,

Asphalt concrete mixture,

We know that,

Now,

The theoretical specific gravity of mix,

⇒

By putting the values, we get

hence,

The percentage of voids will be:

⇒  %V =

           =

           =

           = (%)  

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explanation: