BLDG $2014$: Assignment $10$

Define the following terms:

a$.$ Air Voids $($AV$)$

b$.$ Voids in the mineral aggregate $($VMA$)$

c$.$ Voids filled with asphalt $($VFA$)$

An asphalt concrete mix contains $2240kg$ of aggregates and $145kg$ of asphalt binder per m$3.$ Asphalt absorption of the aggregates is $1\mathrm{.}2\%.$ The bulk relative density of the aggregate is $2\mathrm{.}68$ and the relative density of the asphalt is $1\mathrm{.}04.$ Find the density, asphalt content $($total$,$ effective, and absorbed$),$ and the air voids, VMA, and VFA.

The following graphs were plotted from the results of a Marshall test. The design requirements are light traffic with an aggregate nominal size of $19\mathrm{.}0mm.$

a$.$ Select the optimal asphalt content.

b$.$ Check if the asphalt content you selected will meet the design requirements.

$85$