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GATE CE 2022: Transportation Engineering & Surveying Quiz #7

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Question 1

The bitumen is mixed with a volatile diluent to

Question 2

The properties bitumen should possess to be used as a highway material are

(i) High temperature susceptibility

(ii) Good adhesive properties

(iii) High softening point

(iv) Sufficient flexibility

Question 3

Statement 1: Higher the ductility of bituminous binder, more will be physical interlocking of aggregate – bitumen mixes.

Statement 2: The binder lacking ductility would crack and permit water to enter into the pavement.

Question 4

If the percent volume of voids and percent volume of bitumen in a bituminous mix are 4.5 and 11.25 respectively, the percent volume filled with bitumen will be

Question 5

The theoretical and mass density of a bituminous mix are 2.445 and 2.385 respectively. If the percentage of bitumen in the mix is 10.32% calculate the percentage voids in mineral aggregate.

Question 6

In Marshall method of mix design the coarse aggregate, fine aggregate, filler and bitumen having specific gravity 2.65, 2.72, 2.68 and 1.10 are mixed in the relative proportion (% by weight) of 58, 32, 4.5 and 5.5 respectively. If the mass of mix in air and water are 1075 and 618 g respectively, calculate the percentage air voids in the mix.
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