Cutback bitumen RC-70
General information of cutback bitumen RC-70
Cutback asphalt is an asphalt cement that has a solvent or distillate such as gasoline, diesel fuel, kerosene, or naphtha added to make the asphalt liquid at ambient temperatures and improve its ability to coat aggregates. Two letters followed by a numerical digit designate or name a cutback asphalt.
Cutback asphalt can contain between 12 and 40 percent distillate. The high demand for the distillates to be used in energy applications and ever-increasing air quality regulations have caused a steady decline in the use of cutback asphalt.
When gasoline or naphtha is used to flux asphalt cement, the final product is called “rapid curing” (RC) cutback asphalt. Specifications permit up to 45 percent distillate in manufacturing an RC-70 cutback asphalt.
Our Cutback Bitumen RC-70 complies with cutback petroleum asphalts of the rapid-curing type for use 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. Cutback Bitumen is penetration grade bitumen blended with a solvent such as kerosene, white spirit, gasoline, and naphtha, controlling the curing time. Cut back petroleum asphalts of the rapid curing type supplied by RABIT (RAHA BITUMEN) Co are petroleum grade bitumen manufactured from the fractional / vacuum distillation of crude oil blended with a solvent. Bitumen supplied by RABIT Co is produced from the vacuum residue (short residue) feedstock. Penetration Grade bitumens are specified by the penetration and softening point test. The designation is by penetration range only. The penetration grade bitumens have a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This unique temperature/ viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability, and application temperatures of bitumen. The cutback bitumen (Asphalts) supplied by RABIT are blended from petroleum grade bitumen as stated herein.
Uses of cutback bitumen RC-70
Current common uses are in penetrating prime coats and in producing patching or stockpile mixtures. Cutback asphalt used in mixing with aggregate will usually contain an adhesion agent to assist in the coating of the aggregate surface.
RABIT RC – 70, suitable for use in the construction & maintenance of pavement as designated in ASTM D2399, it is ideal for tack coats.
RABIT RC – 70 is applied to asphalt or granular surfaces using truck mounted spray equipment.
Packing of cutback bitumen RC-70
This 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.
Safety of cutback bitumen RC-70
Refer to Safety Data sheets before use.
Transport, use and store at the lowest temperature possible.
Eliminate all potential ignition sources during application.
Avoid breathing vapors. Avoid contact with skin.
Always wear appropriate PPE including heat protection when used hot.
DO NOT allow product or washings to enter stormwater or sewer systems.
Specification of cutback bitumen RC-70
RABIT (RAHA BITUMEN) Co. guarantees that the Rapid curing Cut Back Grade RC-70 it supplies under its offers is produced in compliance to and is in conformity to ASTM D-2028-97 Rev 2004 and is compliant to the following specification requirements.
| property | specification limit | Test method | |
| Min | Max | ||
| Kinematic viscosity at 60°c ,cST | 70 | 140 | ASTM D2170 |
| Flash point(tag open cup), °c | — | — | ASTM D3143 |
|
Distillation test |
|||
| 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 |
50 | — |
ASTM D402 |
| 70 | — | ||
| 85 | — | ||
| 55 | |||
| 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 | ASTM D95 |
