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  3. a) the soil from a borrow pit is at a total densit

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

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Civil Engineering

a) The soil from a borrow pit is at a total density of 1.8 t/m3and a water content of 12%. It is desired to construct a roadsubgrade with a compacted total density of 2 t/m3 at a watercontent of 17%. Determine the quantity of soil (dry mass in tonnes)to be excavated from the barrow pit and the amount of water (inlitres) to be added for every 1 m3 of compacted soil in theembankment. (Assume the specific gravity of soil is 2.65).

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

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