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RUTTING-RESISTANT ASPHALTIC CONCRETE
REXOVIA®
Resisting pavements
kEybENEFITS
Easy to produce
Excellent mechanical performances
Suitable for all types of traffic
A process that can be used in new
construction and maintenance
kEyFIGURES
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.
REXOVIA® RUTTING-RESISTANT ASPHALTIC CONCRETE
Applied in thicknesses of between
50 and 90 mm
A successful track record of more than 10 years
Rutting depthof less than 5 %
at 30,000 cycles and 60 °C
EFFECTIVE EVEN UNdER HIGH LOAdINGS
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.
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.
A dURAbLE REINFORCEd PAVEMENT
Studies carried out by Eurovia to develop a high-performance rutting resistant asphaltic concrete focused on achieving a certain stiffening of the asphalt mix while maintaining satisfactory fatigue resistance.
Two types of additive included in the hot mix achieve this objective: > either «PE», a thermoplastic polyethylene
granulate which acts as a plastic filler to strengthen the inter-grain bonds created by the bitumen,
> or «R», a powder obtained from grinding a natural 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® :> in a batch mixing plant, the pre-proportioned
additive supplied in thermofusible bags is introduced directly into the mixer for each batch,
> in a continuous mixing plant, the additive is 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.
AN ASPHALT MIX WITH STRONG MECHANICAL PERFORMANCE
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.
The proportion of additive can be adjusted, based on a laboratory study, to meet even more stringent rutting resistance requirements.
Semi-coarse
asphaltic concrete
Rexovia®
Sensitivity to water (EN 12697-12)Simple compressive strength at 18 °C atm. (in kPa)
8,000 10,200
Immersion compression ratio 81 % 83 %
Marshall test (EN 12697-34)Stability at 60 °C (in daN)
825 1,420
Creep (in mm/10) 30 21
Rexovia® is a registered trademark.
Rutting resistance (EN 12697-22)
Rutting depth on a 100 mm thick Rexovia® slab at 60 °C :
at 30,000 cycles ≤ 5 %at 100,000 cycles ≤ 8 %
Compressive strength
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.
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).
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
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A RECOGNISEd, AWARd-WINNING PROCESS
Rexovia® is part of an highway innovation charter signed in 2009 beetween the Asfa, Cofiroute and Eurovia.
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