Rapid Curing Cutback Bitumen is Produced by Blending Bitumen with?

By BYJU'S Exam Prep

Updated on: October 17th, 2023

(A) Petrol

(B) Diesel

(C) Benzene

(D) Kerosene

Rapid curing cutback bitumen is produced by blending bitumen with petrol. Cutback bitumen has less viscosity and is obtained by mixing in a volatile diluent. As a result, the bitumen binder is combined with a volatile solvent to boost its fluidity at low temperatures. The qualities and quantity of both the bitumen and volatile oil used as diluent determine the viscosity of the cutback bitumen and the rate at which hardness on the road develops.

Varieties of Cutback Bitumen:

There are three different varieties of cutback Bitumen.

  • 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

(i) For priming, MC and SC cutback are employed, and viscosity rises with each grade, such as RC-0, RC-1, and RC-2.

(ii) Although RT-4 can be used as a premix in macadam, RT-1 is the lowest viscosity used for surface painting.

(iii) The grout with the maximum viscosity, RT-5, is utilised for grouting.

(iv) While RC-5 and SC-5 will have the same viscosity, MC-2 will be thicker than MC-1.


Rapid Curing Cutback Bitumen is produced by blending bitumen with (A) Petrol (B) Diesel (C) Benzene (D) Kerosene

Quickly healing cutback bitumen is formed by mixing bitumen with petrol. The viscosity of Cutback bitumen is less and to obtain this mixing in a volatile diluent is important.

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