General description of bitumen RC250
Cutback bitumen RC250 is dissolved of bitumen in solvents of kerosene. 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 bitumen RC250 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.
Uses of cut back bitumen RC 250
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.
The cutback bitumen is ideal for prime coat and cold applied because of easy uses and no need to thinning and heating.
Cutback bitumen RC250 consist of initial incorporation of asphalt into the surface of non-asphalt based course preparatory to any superimposed treatment of construction.
The cutback asphalt RC250 applying to waterproofing of surfaces, plug capillary voids, coat and bond loose mineral particles.
Packing of cutback RC250
Packing of cutback bitumen RC250 is in new thick steel drum on pallet to prevent any leak inside of container also bulk in bitutainer and tanker.
Guaranty/warranty of cutback asphalt RC250
ATDM guaranty the quality of cutback RC250 with arrangement of international inspector to check quality and quantity of the bitumen on each shipment during the loading to vessel and controlling the production by QC team via batch test report before shipping. ADTM guaranty the quality to meet with ASTM/EN 15322:2009
Analysis of bitumen RC250
Properties | Min | Max | Test Method |
 Kinemalic 1 viscosity at 60°C, eSt | 250 | 500 | ASTM D2170 |
 Flash Point (Tag Open-Cup),°C | 27 | – | ASTM D1310 |
 Distillate test 2 : |  |  |  |
 Distillate, percent by Volume of total 360°C | |||
 To 190°C | – | – | ASTM D402 |
 To 225°C | 35 | – | ASTM D402 |
 To 260°C | 60 | – | ASTM D402 |
 To 316°C | 80 | – | ASTM D402 |
 Residue from distillation to 360°C: | |||
 Test on residue from distillation Penetration at | 80 | 120 |  |
 Ductility 3 at 25°C, cm | 100 | – | ASTM D402 / ASTM D113 |
 Solubility in trichloroethylene, percent mass | 100 | – | ASTM D402 / ASTM D2024 |
 Water, percent volume | – | 0.2 | ASTM D95  |
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