Reducing the cost of road construction whilst maintaining pavement design life is the holy grail for engineers, contractors and asset owners.
Geofabrics are able to provide geosynthetic solutions for all parts of the pavement formation which can reduce construction costs by up to 30% whilst improving design life by up to six times.
Weak or variable ground usually presents considerable challenges for subgrade stabilisation. Geofabrics’ subgrade stabilisation solutions include bidim non woven geotextiles to provide separation and filtration between the subgrade and base layers.
Tensar TriAx geogrids are used to provide effective confinement of granular fill in subgrades. This results in a stiff mechanically stabilised layer, capable of controlling differential settlement, reducing aggregate depths by up to 30%, capping weak deposits and increasing bearing capacity.
In tough times, faced with ever increasing earthworks costs TenCate Mirafi® RSi Multifunctional Woven Geotextiles offer engineers and contractors significant cost savings and improved road pavement performance. TenCate Mirafi® RSi offers engineers and contractors a new solution for cost effective construction using site-won material.
Increased traffic imposes higher strains within asphalt pavements which fatigues the asphaltic layers, resulting in asphalt cracking and water penetration into the pavement, which leads to further deterioration. Asphalt reinforcement provides fatigue resistance, mitigating subgrade rutting and reducing cracking through improved shear resistance.
Geofabrics offers Tensar AR-G a proven pavement reinforcement technology for retarding cracking and controlling deformation as well as the specialist range of GlasGrid asphalt reinforcement products that can be used in asphalt overlays as thin as 40 mm.
Crack reflection and water penetration are a major cause for concern for road engineers. Geofabrics offers a solution in Sealmac, a geotextile paving fabric that is impregnated with bitumen to act as a stress absorbing membrane under chip seals and asphalt pavements as well as Bitac bandage strips used under asphalt to control crack reflection and seal construction joints.
Megaflo panel drain provides the dimensional stability and field-proven structural strength for quick, effective subsurface drainage.
Performance is the distinguishing feature of the panel drain due to its ability to rapidly collect and remove water. Compared to round pipe, Megaflo has twice the inflow capacity for an equivalent length and will drain water in less than 60% of the response time. Its slim 40 mm wide profile permits faster and more cost effective installation in a narrower trench.
For slopes over 70°, Maccaferri gabions can accommodate significant differential settlement. The mesh baskets form a monolithic structure that acts as one homogeneous unit, which is permeable and suitable for use in high stress hydraulic applications.
To minimise road closure timeframes a number of projects have been completed utilising Maccaferri gabions which have been prefilled nearby and then lifted into place.
For reinforced slope systems and mechanically stabilised earth walls Maccaferri Terramesh and is a versatile, modular system that can be a more cost effective solution than the mass gravity gabion wall because of the speed of installation and reduced rock fill requirements.
For mechanically stabilised earth slopes and embankments that require a vegetated front face, Maccaferri Green Terramesh can be filled with soil and planted, creating a green slope.
For high walls with high loads our Keystone TW3 system maximises the use of available landspace in commercial developments and in highway structures.
For slope and wall reinforcement Geofabrics offers a suite of solutions including:
To respond to the different problems associated with instability of rock faces, Geofabrics has a broad range of independently verified rockfall mitigation systems designed and manufactured by Maccaferri. The range includes:
Double Twist Mesh and Steelgrid HR drapery systems offer significant flexibility in anchor positioning, saving time and cost on site.
For applications where low deflection and high strength are required, High Energy Absorption (HEA) Cable Mesh Panels offer containment of unstable rocks with minimal deformation.
When a drapery systems cannot be installed due to access, topographical or economic considerations Dynamic Rockfall Barriers/Catch Fences offer a rockfall protection solution for intercepting and stopping falling rocks and boulders.
In situations where there is available “run-out” space beneath a rockfall barrier in which the rocks can ultimately stop or be collected, Hybrid and Attenuator Systems combine the energy absorption capabilities of a dynamic rockfall barrier with the reduced maintenance advantages of drapery mesh on slopes.
Rockfall embankments provide protection to infrastructure and property over of a wider area than barrier fence systems. They are also able to contain or divert larger volumes of rock falls than stand alone barrier fences. Rockfall protection embankments are ideal solutions where it is not possible to intercept or prevent falling rock.
Concrete Canvas is increasingly being used as an alternative to non-structural shotcrete to protect slopes from surface erosion caused by weathering, surface run-off and environmental degradation.
In certain applications Concrete Canvas can be used as structural slope stabilisation by combining it with steel mesh and soils nails.