a) The soil from a borrow pit is at a total density of 1.8 t/m3 and...

a) The soil from a borrow pit is at a total density of 1.8 t/m3 and a water content of 12%. It is desired to construct a road subgrade with a compacted total density of 2 t/m3 at a water content of 17%. Determine the quantity of soil (dry mass in tonnes) to be excavated from the barrow pit and the amount of water (in litres) to be added for every 1 m3 of compacted soil in the embankment. (Assume the specific gravity of soil is 2.65).

b) Explain the relative benefits of using stone mastic asphalt and open graded asphalt in pavement.

Expert Solution

Ally Wells answered 10 months ago

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