Fuels & Lubricants Magazine

Figure 2: Adhesion
characteristics of
50/70 road bitumen
(left) and RmB
45/80-55 (right)
Conclusions
Figure 3: Test road
before (left) and after
(right) the RmB road
construction
Property Test method RmB
Penetration at 25 °C, 0.1mm EN 1426 45-80
Softening point, °C EN 1427 ≥ 55
Fraass breaking point, °C EN 12593 ≤ -16
Storage stability EN 13399
Softening point difference, °C EN 1427 ≤ 8
Flash point, °C EN ISO 2592 ≥ 235
Dynamic viscosity at 180 °C, mPas EN 13702-2 ≤ 500
Table 5: Main requirements of MSZ 930:2015 standard
Heavy or vacuum residues of crude
oil processing are mainly converted
to more valuable and lighter products.
Though the demand of cheap
but high quality road construction
binder, like road construction bitumen
is increasing too. One solution
could be the production of chemically
stabilised rubber bitumen. Applying
MOL proprietary technology,
similar or in some cases even better
quality of asphalt can be constructed
than that of the top quality asphalt
containing expensive polymer
modified bitumen. RmB production
could improve the environmental
awareness and could demonstrate
the corporate social responsibility
of the manufacturer. The reason is
the utilisation of a waste tyre based
crumb rubber. Many road construction
companies have applied MOL’s
rubber modified bitumen product in
Hungary and Slovakia and acquired
asphalt mixing and road construction
experiences during its application.
RmB can significantly contribute
to the construction of roads
having better lifetime, better quality
and lower maintenance cost, as well
as to the sustainable transportation
and increased waste re-utilisation.
The excellent product quality and
its economic, environmental and
social effects were acknowledged by
domestic and international organisations.
22 Fuels&Lubricants No. 1 OCTOBER 2017