Strong skid resistance

MICROSURFACING wITh hIGh SKID RESISTANCE

Gripfibre®

GRIPFIBRE®

MICROSURFACING wITh hIGh SKID RESISTANCE Microsurfacings have proven their effectiveness in a large number of road projects and represent

an excellent compromise between technical characteristics and costs. eurovia has developed

a "second generation" microsurfacing that confirms this technical performance track record,

especially in terms of skid resistance and durability.

The innovative aspect of this microsurfacing is the inclusion in the formula of synthetic fibres

that have undergone special surface treatment. They make it possible to apply gap-graded mix

designs without risk of segregation and thus ensure lasting surface texture. They reduce the risk

of emulsion drainage and loose chippings when the road is re-opened to traffic.

Gripfibre® can be produced in a wide range of colours to differentiate traffic zones – bicycle lanes,

emergency lanes, private roads, etc.

KEY BENEFITS

Cold, ultra-thin technique

Energy savings and raw materials conservation

rapid re-trafficking

reduced inconvenience for users and the adjacent community

Exceptional skid resistance and durability

KEY FIGURES

Several million fibres per m2

10mm thick surface course

ATDvalues of up to 1.8mm

Nearly15 million m2 of

microsurfacing applied annually worldwide

Gripfibre® offers an effective and safe alternative to surface dressings, for example on variable substrates and winding roads. The process represents an economic way to regenerate roadway surface characteristics in both rural and urban areas, where its low thickness eliminates the need to raise the level of joints, kerbs and manholes. It is routinely used to meet accident zone treatment requirements.

SUPERIOR SKID RESISTANCE

Gripfibre® is a 0/6, 0/8 or 0/10mm dense or gap graded microsurfacing with added fibres. It is usually applied in a single layer of about 10mm thickness over properly shaped substrate. Gripfibre® extends the service life of structurally sound pavements.

A dual layer application is possible in cases of limited substrate deformation (less than 20mm under a 3m straight-edge). For greater deformations, prior reshaping or cold planing is required.

Gripfibre® is produced and laid by a single self-propelled machine that transports and stores the constituent materials, proportions them, mixes them and spreads them over large widths on the roadway. The equipment used by Eurovia is fitted with extending, variable-width spreaders. Some machines use front-end loading and continuous feed of both aggregate and liquid components and thus achieve very high application rates.

SIMPLICITY AND ExCELLENCE

100% BENEFICIAL

Gripfibre® achieves unprecedented skid resistance and durability levels. it can be used for construction and maintenance of roads of all traffic loads. it is applied at high laying rates and can be rapidly re-opened to traffic, thus reducing inconvenience to users and the adjacent community.

0/6 Gripfibre® 0/10 Gripfibre®

section A75 motorway (Central France)

RN 56 highway (Eastern France)

Traffic T0 T1

BFC 1 year 4 years 1 years 5 years

40kph 0.56 0.57 0.51 0.41

60kph 0.5 0.51 0.43 0.38

80kph - - 0.39 0.34

at 90kph 0.4 0.41 - -

TECHNICAL DEPARTMENT

18, place de l’Europe - 92565 Rueil-Malmaison cedex

Tel.: +33 1 47 16 38 00 - Fax: +33 1 47 16 38 01

www.eurovia.com

technique@eurovia.com

DEPENDABLE SKID RESISTANCE

Gripfibre® waterproofs pavements and provides them with durable skid resistance.The macrotexture is high in new pavements and does not suffer a marked reduction over time.

Skid resistance levels are also high and in newly laid surfacings and change very little over time. The following table shows average braking force coefficient (French NF P 98-220-2 standard) measured on representative gap-graded Gripfibre® surfaces.

The usual spread rate, applied to a substrate of appropriate quality, is respectively 13kg/m2 for a 0/6 grading and 20kg/m2 for a 0/10 formula, approximately.

CAREFULLY SELECTED COMPONENTS

> The aggregates used in Gripfibre® come from hard stone quarries, which the company carefully selects for the purpose. They meet the same requirements as those used in hot mix for surface courses (EN 13043 standard). New mix designs incorporating reclaimed asphalt pavement are possible.

> The Gripfibre® binder is usually a cationic modified bitumen emulsion with slow controlled breaking properties, Emulvia®

Grip P or Emulvia® Grip S. A pure bitumen emulsion may also be used, depending on the traffic volume for which the pavement is designed.

> The fibres are synthetic and over 4mm in length. They are added at a dosing of several million fibres per m2 to "reinforce" Gripfibre®.

> The other additives (cement or lime and surfactant in aqueous solution) control the setting of the emulsion and adapt it to worksite conditions.

Gripfibre® is patented, as is the fibre proportioning system. The process is covered by French Technical Opinion No. 137 and by British Board of Agrement, Quebec Ministry of Transport and Sétra certificates.

Gripfibre® is a registered trademark.

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Average texture depth ATD (EN 13036-1)

0/6 Gripfibre® dense graded 0.6 to 0.8mm0/6 Gripfibre® gap graded 0.9 to 1.4mm0/10 Gripfibre® gap graded 1.3 to 1.8mmMeasured after 1 year of T1 traffic (500 trucks / day)

0/6 Gripfibre® gap graded 0.7 to 1mmAfter 7 years of T0 traffic (1200 trucks / day)