General description of Cutback Bitumen RC-800
Cutback Bitumen RC-800 is Rapid curing (RC) cut-back asphalt consisting of penetration grade asphalt cement and diluent or cutter of rapid volatility.
(Raha Bitumen) Cutback Bitumen RC-800 complies with cutback petroleum asphalts of the rapid-curing type for use in the construction and treatment of pavements.
Cutback Bitumen RC-800 is a rapid curing cutback bitumen that contains 75% bitumen, is black in color, and is manufactured strictly as per ASTM D 2028M standard. The diluent temporarily reduces the viscosity of the asphalt cement for ease of handling and application. After application, the diluent evaporates, leaving asphalt cement to perform its function. RC–800 bitumen viscosity is between 800-1600 CST.
Cutback RC-800 is dissolved of bitumen in solvents of gasoline. In many countries, kerosene and other volatile petroleum-derived products are added as a cutter or cutback agent to bitumen to reduce (or cutback) the viscosity of the bitumen. The mixture obtained may be called cutback bitumen.
The reduction in viscosity of the bitumen aids the construction of seal coats in road pavements as the softened mixture wets the chips more easily. The cutback agent evaporates from the seal coat, the cutback agent becoming a negligible component of the seal coat a few months after application. If significant amounts of the cutback agent remain in the seal coat an unwanted long term softening effect may result.
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Application of Bitumen RC-800
Cutback agents are used to lower the viscosity of bitumen when it is applied as a primer to the surface of a road pavement aggregate base course or substrate. Kerosene is used as a bitumen cutback agent at different concentrations according to local conditions and requirements.
This kind of bitumen is suitable to be used in the construction and treatment of pavements as per ASTM D2028-97 reapproved in 2004. Cutback Grade Bitumen is normally used in spraying and in some mixing applications.
Packing of Cutback RC-800
Packing of cutback bitumen RC-30 is in new thick steel drum on the pallet to prevent any leak inside of the container, IBC Tank, and also bulk in bitutainer.
his cutback bitumen bulk in the tanker and also in new steel and thick drum on the pallet to prevent all leak inside of the container.
Specification of Cutback Bitumen RC-80
| property | specification limit | Test method | |
| Min | Max | ||
| Kinematic viscosity at 60°c ,cST | 250 | 500 | ASTM D2170 |
| Flashpoint(tag open cup), °c | — | 27 | ASTM D3143 |
| Distillation test Distillate, volume percent of total Distillate to 680°f (360°c) |
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| to 437°f(225°c) To 500°f(260°c) to 600°f(316°c) Residue from distillation to 680°f(360°c), percent volume by difference |
35 | — | ASTM D402 |
| 60 | — | ||
| 80 | — | ||
| 65 | — | ||
| Test on Residue from distillation test | |||
| Penetration 77°f(25°c) 100g,5s mm | 80 | 120 | ASTM D5 |
| Ductility 77°f(25°c) 5cm/min cm | 100 | — | ASTM D113 |
| Solubility in trichloroethylene % | 99 | — | ASTM D2042 |
| Water, percent volume | — | 0.2 | D95 |
