+91-9828-747676
Question
Identify the correctly matched pair(s) from the following based on the type of cut-back bitumen and fluxing agents used. 
1. Rapid curing (RC) cut-backs : Kerosene 
2. Medium curing (MC) cut-backs : Naptha or Gasoline 
3. Slow curing (SC) cut-backs : Light oils
A.
Only 1 and 2
B.
Only 1
C.
Only 1 and 3
D.
Only 3
Answer ( Option D)

Only 3

Solution

(i) Cutback bitumen is bitumen with less viscosity which is achieved by the addition of volatile diluent. Hence, to increase the fluidity of the bitumen binder at low temperatures the binder is blended with a volatile solvent.
(ii) The viscosity of the cutback bitumen and the rate at which hardness on the road depends on the characteristics and quantity of both bitumen and volatile oil used as diluent.
(iii) Cutback bitumen is available in three types:
Rapid curing (RC) - In this bitumen is fluxed with Naptha/Gasoline, petroleum.
Medium curing (MC) - In this bitumen is fluxed with Kerosene or high diesel oil.
Slow Curing (SC) - In this bitumen is fluxed with High boiling point gas oil.
(iv) Cutback bitumen is prepared by diluting a paving grade bitumen with a volatile solvent such as light fuel oil or kerosene

Popular Online Test Serie

Preparing students for success in a changing World.

RPSC-AE

RPSC-AE
RSSB-JE

RSSB-JE
SSC-JE

SSC-JE
RRB-JE/SSE

RRB-JE/SSE
RSEB-JE/AE

RSEB-JE/AE
DRDO CEPTAM -10 (STA-B)

DRDO CEPTAM -10 (STA-B)

ISRO Scientist Engineer

ISRO Scientist Engineer
View All

Online Classes

We care about our students

View More


banner
banner
banner
banner
banner
Online Classes
Register Now
Test Series
Register Now
Job Notification
Job Notification

Daily Quiz

RPSC-AE, RSMSSB-JE, SSC-JE, RRB-JE, PSU's