ESE 2021 Technical Quiz : Highway Materials

Select the incorrect statement:

The bitumen is mixed with a volatile diluent to

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

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.

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