If they are to withstand heavy, intense, channelled and/or slow traffic, pavement layers must have high strength and above all good resistance to rutting. An asphaltic concrete is considered to be rutting-resistant if its rutting depth is shown in tests to be less than 5 % after 30,000 cycles at 60 °C.

1. RUTTING-RESISTANT ASPHALTIC CONCRETE
REXOVIA
®
Resisting
pavements

2. REXOVIA®
RUTTING-RESISTANT ASPHALTIC CONCRETE
If they are to withstand heavy, intense, channelled and/or slow traffic, pavement layers must
have high strength and above all good resistance to rutting. An asphaltic concrete is considered
to be rutting-resistant if its rutting depth is shown in tests to be less than 5 % after 30,000 cycles
at 60 °C.
To achieve such performance, special asphalt mix formulations are called for.
Eurovia has therefore developed Rexovia®, a high-performance, high-strength solution with
proven qualities.
k
ey
benefits
k
ey
figures
E
asy to produce
E
xcellent mechanical performances
S
uitable for all types of traffic
Applied in thicknesses
of between
50 and 90 mm
A
process that can be used in new
construction and maintenance
A successful track record of
more than 10
years
Rutting depth
of less than
5%
at 30,000 cycles and 60 °C

3. E
FFECTIVE EVEN UNDER
HIGH LOADINGS
A
DURABLE REINFORCED
Pavement
Rexovia® has excellent rutting resistance under all
types of traffic, even at high temperatures, and
its flexibility and service life are not compromised
at low temperatures. The Rexovia® manufacturing
process is simple and enables the product to be
used in areas subject to specific local constraints.
Studies carried out by Eurovia to develop a highperformance rutting resistant asphaltic concrete
focused on achieving a certain stiffening of the
asphalt mix while maintaining satisfactory fatigue
resistance.
To prevent rutting, Rexovia is the solution of
choice for both new construction and maintenance:
HGV lanes
bus lanes and bus stops
approaches to traffic lights
motorway toll stations
roads on steep slopes
industrial roads
by-passes
intersections and roundabouts
port and airport facilities
etc.
®
Two types of additive included in the hot mix
achieve this objective:
ither «PE», a thermoplastic polyethylene
e
granulate which acts as a plastic filler to strengthen
the inter-grain bonds created by the bitumen,
r «R», a powder obtained from grinding a natural
o
solid hydrocarbon, which is soluble in bitumen
and changes the latter’s behaviour by reducing its
thermal sensitivity.
Whichever additive is chosen, ordinary coating
equipment is used to manufacture Rexovia® :
n a batch mixing plant, the pre-proportioned
i
additive supplied in thermofusible bags is
introduced directly into the mixer for each batch,
n a continuous mixing plant, the additive is
i
measured and then added to the hot mix through
the recycling ring.
The «R» additive can also be mixed with the
bitumen ahead of time in the bitumen plant
and the «R» binder supplied to the mixing plant
ready to use.

4. A
N ASPHALT MIX WITH
STRONG MECHANICAL
PERFORMANCE
Compressive strength
Rexovia® is a 0/14 or 0/10 mm asphaltic concrete for
pavement surface or binder courses subject to high
risk of rutting under dynamic loads or of shear failure
under static loads.
Rexovia® has qualities conferred by a special additive
that gives the asphalt mix excellent mechanical
performance across a wide range of temperatures.
The mix is applied in thicknesses of 50 to 90 mm, like
a semi-coarse asphaltic concrete or a high modulus
asphaltic concrete (EN 13108-1).
Rexovia® offers mechanical properties above the
average for semi-coarse asphaltic concretes,
especially with respect to rutting resistance.
Tests comparing a Rexovia® 0/14 mm formulation
with 50/70 bitumen + PE additive and a semi-coarse
asphaltic concrete with an identical grading curve
and 50/70 bitumen demonstrate Rexovia®’s excellent
mechanical behaviour and low thermal sensitivity.
Semicoarse
asphaltic
concrete
Rexovia®
8,000
10,200
Immersion compression
ratio
81 %
83 %
Marshall test
(EN 12697-34)
Stability at 60 °C (in daN)
825
1,420
30
21
Sensitivity to water
(EN 12697-12)
Simple compressive
strength at 18 °C atm.
(in kPa)
Creep (in mm/10)
Rutting depth on a 100 mm thick Rexovia®
slab at 60 °C :
at 30,000 cycles
at 100,000 cycles
≤5%
≤8%
The proportion of additive can be adjusted, based
on a laboratory study, to meet even more stringent
rutting resistance requirements.
Stiffness modulus (EN 12697-26)
Rexovia® has a high stiffness modulus. With
appropriate proportions of additive, the asphalt mix
meets the requirements of the standard covering
high-modulus asphaltic concretes (EN 13108-1).
A RECOGNISEd,
AWARD-WINNING
PROCESS
Rexovia® is part of an highway
innovation charter signed in 2009
beetween the Asfa, Cofiroute and
Eurovia.
Rexovia® is a registered trademark.
TECHNICAL DEPARTMENT
18, place de l’Europe - 92565 Rueil-Malmaison cedex
Tel. : 33 (0)1 47 16 38 00 - Fax : 33 (0)1 47 16 38 01
www.eurovia.com
technique@eurovia.com
- May 2011- photos credit : photolibrary Eurovia
Rutting resistance (EN 12697-22)