BEBIT Asphalt Reinforcement Grids

Around 95 % of classified highways are constructed with an asphalt surfacing layer. The construction class and thus the road pavement design are selected according to the traffic loading. This ensures that a solution can be found that is tailored to the loading conditions and is both technically satisfactory and economically viable. The rapid increase in car and HGV traffic in recent years has led to increasing levels of road damage. The consequences of poor road conditions are ever shorter maintenance intervals, localised cases of overloading, traffic restrictions and accident blackspots due to road damages. To combat these effects, “technical textiles” such as asphalt reinforcement grids have been successfully employed in road construction since the 1980s. In the meantime, a wealth of experience has been compiled, which has been incorporated, for example, in the FGSV working paper no. 770 (2006/version 2013) on the use of non-woven fabrics, grids and composites in asphalt pavement construction. BEBIT is our product range that has been developed in line with these principles.

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Your advantages

Reinforcing effect

Fast and cost-effective to lay

Reduces rehabilitation costs in the long term

General

BEBIT G is a grid that has high tensile strength and is made of glass fibres with a melting point above 850 °C. The fibre bundles are encased in a bitumen coating. BEBIT G Asphalt Reinforcement Grids have an extremely high constrained modulus that allows the immediate absorption of high tensile forces with minimum elongation. This results in the stresses being concentrated in the asphalt inlay and its reinforcing function is instantly activated. The open structure of BEBIT G grids ensures optimum bonding between the layers.

Bebit Gruppe 1100px — Oben: BEBIT G | Mitte: BEBIT G BC | Unten: BEBIT G Plus

Asphalt reinforcement grid with additional installation aid

BEBIT G plus and BEBIT G BC are asphalt reinforcement grids from the BEBIT G range with an additional laying aid. In the case of BEBIT G Plus, the laying aid comprises an additional mesh infill made of fine glass roving. BEBIT G BC, on the other hand, has a laying aid made of light-weight, non-woven fabric.

A laying aid ensures maximum possible contact with the bituminous subsurface, keeps the grid firmly in position and makes installation more cost-efficient. No additional bitumen emulsion or otherwise customary spreading of chippings is necessary.

Functions

Reinforcement

BEBIT asphalt reinforcement grids are reinforcement products. The grid acts as a reinforcing element that absorbs the forces in the area of loading and thus effectively delays crack development. The resulting fatigue resistance is greater than that of a non-reinforced asphalt layer. The reinforcement grid improves the load-bearing capacity of the entire pavement system, slows down the propagation of cracks from the substrate and significantly extends the useful life of the asphalt surface.

Applications

Asphalt reinforcement products are useful in all situations where asphalt layers are subject to high traffic loads and temperature fluctuation, since these conditions are liable to promote crack formation. Asphalt sealing systems in water engineering, landfill sites and agricultural areas are thus also suitable fields of application for BEBIT Asphalt Reinforcement Grids.

Road widening

New asphalt surfacing layer
BEBIT Asphalt Reinforcement Grids
Existing or milled asphalt base layer
Regulating course, if required
Unbound sub-base

Overbuild of paved areas

New asphalt surfacing layer
BEBIT Asphalt Reinforcement Grids
Regulating course
Unbound sub-base

Grafik Bebit Sanierung Verkehrsflaechen 2880px

Rehabilitation of bituminous road surfaces

New asphalt surfacing layer
BEBIT Asphalt Reinforcement Grids
Regulating course, if required
Existing or milled asphalt base layer
Unbound sub-base

Rehabilitation of concrete roads

New asphalt surfacing layer
BEBIT Asphalt Reinforcement Grids
Bituminous regulating course
Existing concrete road pavement
Unbound sub-base

Data

Properties	G 50	G 100	G 120	G 50 plus	G 100 plus	G 120 plus	G 50 BC	G 100 BC	G 120 BC
Product type	Asphalt reinforcement grid with bitumen coating
Additional laying aid	without			Mesh infill			Non-woven fabric
Raw material	Grid: glass			Grid: glass Mesh infill: glass			Grid: glass Non-woven fabric: PP
Maximum tensile strength longitudinal (kN/m)	50	100	120	50	100	120	50	100	120
Maximum tensile strength transverse (kN/m)	50	100	120	50	100	120	50	100	120
Fields of application
Road and traffic areas	●	●	●	●	●	●	●	●	●
Aircraft operation areas		●	●		●	●		●	●

● suitable

Special types available on request.

Request further product information

Installation

Prior to installation the eveness of the installation surface must be checked and the substrate cleaned. If any cracks, joints or other openings become visible, these must be filled.
The subsurface temperature must not be less than 5 °C and the air temperature must be at least 10 °C during installation.
BEBIT asphalt inlays must be laid into the bitumen emulsion layer after the emulsion has broken. They must be laid in dry weather only and without creasing.
Immediately before the asphalt reinforcement is laid, the road surface is first sprayed with a Class C70BP 3-OB-1 polymer-modified bituminous emulsion tack coat, in accordance with TL BE StB 07. Good experience has also been had with Class C70BP 3-OB-2 emulsions. If any other type of emulsion is to be used, this must be tested in advance to make sure that good bonding with the supporting layer is achieved.
A road surfacing layer of at least 40 mm must be laid on top of the asphalt inlay immediately after the bitumen emulsion has dried.

Our detailed installation and laying instructions for BEBIT Asphalt Reinforcement Grids must also be observed.

Advantages