Cutback bitumen RC800 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.
Cutback Asphalt RC 800
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.
Application of cut back asphalt 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.
The cutback bitumen is ideal for prime coat and cold applied because of easy uses and no need to thinning and heating.
Cutback bitumen RC 800 consist of initial incorporation of asphalt into the surface of non-asphalt based course preparatory to any superimposed treatment of construction.
The cutback asphalt RC 800 applying to waterproofing of surfaces, plug capillary voids, coat and bond loose mineral particles.
Data Sheet of cutback asphalt RC 800:
|Kinemalic 1 viscosity at 60°C, eSt||800||1600||ASTM D2170|
|Flash Point (Tag Open-Cup),°C||66||-||ASTM D1310|
|Distillate test 2 :|
|Distillate, percent by Volume of total 360°C|
|To 190°C||-||-||ASTM D402|
|To 225°C||-||-||ASTM D402|
|To 260°C||-||35||ASTM D402|
|To 316°C||45||80||ASTM D402|
|Residue from distillation to 360°C:|
|Test on residue from distillation Penetration at||50||-|
|25°C,100g, 5 sec.|
|Ductility 3 at 25°C, cm||120||250||ASTM D402 / ASTM D113|
|Solubility in trichloroethylene, percent mass||100||-||ASTM D402 / ASTM D2024|
|Water, percent volume||-||0.2||ASTM D95|