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Pavement reinforcement Reducing fatigue cracking

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MAC2015 Pavement Canada.indd 2 4/30/2015 1:23:49 PM Innovative solutions for asphalt and unbound pavements and soft ground stabilisation

Whether constructing a gravel forestry track over soft soil or resurfacing a multi-lane highway, Maccaferri has the technical knowledge and wide product range to provide solutions for the rigorous demands of today’s roads. Resources are becoming scarce and pavement owners require longer life for less money. By reducing materials and whole-life costs, Maccaferri’s leading range of pavement and ground stabilisation products can help achieve these goals.

Reinforcing pavements over peat Extending life of resurfacing Improving access over wet or soft works ground

Because every project is different, Maccaferri offers the widest range of products available for asphalt and unbound layers, as well as drainage geocomposites to remove water from the pavement structure.

Project Technical Service For 130 years Maccaferri has been developing innovative, sustainable engineering solutions. Our staff are on hand to offer full technical support including analysis and design, product selection and installation supervision. Maccaferri are your project partners every step

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MAC2015 Pavement Canada.indd 3 4/30/2015 1:23:49 PM Asphalt reinforcement

Reinforcement can produce a threefold increase Typical applications Key Problems in the service life of pavements by reducing Runways, highways, road · Reflective cracking fatigue, reflective, thermal and settlement widening, ports and wharves, · Thermal cracking cracking. Stress concentrations in the asphalt uphill running lanes, junctions, · Fatigue / “Crocodile” cracking matrix are relieved and redistributed by the industrial areas, mining, heavy · Rutting and Shoving reinforcement, resulting in: vehicle turning-areas, bus · Delayed initiation of cracks lanes, trench reinstatement, · Haunching failure · Slower crack growth overlaying concrete · High-axle loads · Narrower crack width pavements, material handling · Construction on peat soils · Wider spacing between cracks and parking areas. · Differential settlement · Deviation of cracks · Weak subgrades Reinforcement also provides lateral restraint · Reduced construction layer thickness within the asphalt, which improves resistance to rutting and shoving. With steel Road MeshTM and fibreglass or polyester geogrid MacGrid® AR, Maccaferri

Wheel load deflection The unique geometry of Road MeshTM allows full compaction to occur around the wire strands resulting in full interlock Asphalt

Unbound

Tensile Reinforcement Peaks of strain smoothes out stress and strain concentrations in the asphalt Unreinforced Reinforced Interlock with asphalt

Rutting and shoving Fatigue cracking Reflective cracking

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MAC2015 Pavement Canada.indd 4 4/30/2015 1:23:49 PM Unbound pavement reinforcement and soft subgrade stabilisation

Reinforcement placed within an Maccaferri’s woven geogrids and Key Problems unbound granular layer can reduce extruded polymer grids MacGrid® WG · Bearing capacity failure the layer thickness required by a and EG, provide a complete solution to · Differential settlement third. reinforcement of the unbound layer and · Rutting Two mechanisms work to increase can be used in conjunction with MacTex® · Wet / saturated ground the elastic modulus and bearing geotextiles to form a barrier membrane to · Construction layer thickness capacity, resulting in improved prevent interlayer contamination. · Weak subgrades resistance to deformation and The woven polypropylene geotextile rutting; MacTex® W1 is used to provide cost Typical applications · lateral restraint to the aggregate effective reinforcement of unbound roads particles Mines, quarries, agricultural roads, military, landfill, forestry roads, construction sites, haul roads, port areas,

Aggregate Reinforcement/

Reinforcing pavements overLateral peat restraint TensionedImproving membrane access over wet or soft

Access over wet/soft ground Soft ground stabilisation Reduction of granular layer

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MAC2015 Pavement Canada.indd 5 4/30/2015 1:23:49 PM Pavement Drainage

The pavement structure can be weakened by water within, beneath or adjacent to it. Maccaferri’s MacDrain® drainage geocomposites are used to control and remove this water, enhancing pavement performance. Selection of an appropriate drainage geocomposite is dependent upon its intended location within the pavement, the materials it will be in contact with and the drainage capacity required. Performance requirements will be different for an unbound pavement in a monsoon region, to an asphalt pavement in an area susceptible to ground frost. Traditional roadside trench drains can often be

Road MacGrid® MeshTM WG S MacGrid® EG

Unbound MacDrain®

Drainage

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MAC2015 Pavement Canada.indd 6 4/30/2015 1:23:50 PM Product Range & Selection Matrix

Maccaferri offers a range of solutions to Please contact your nearest meet your pavement needs. Our products Maccaferri office for product are CE marked and many have local selection advice, data sheets and project specific technical assistance. www.maccaferri.com

Product Feature / Benefit

Steel wire hexagonal mesh with transverse steel bars. Road TM Grid Size: 8x10 Type Road MeshTM Mesh provides the highest level of protection against rutting, shoving, fatigue, thermal, reflection and settlement cracking. Mesh Strength: 40 - 60kN/m Glass fibre or polyester woven geogrid with coating. With high Grid Size: 12.5mm or MacGrid® AR tensile strength and high modulus of elasticity at low elongation, MacGrid® AR is a cost effective solution for preventing cracks in 40mm

Asphalt Asphalt Glass fibre or polyester woven geogrid with coating and geotextile ® Grid Size: 12.5 or MacGrid® AR G backing. MacGrid AR G is impregnated with bitumen to provide crack prevention with a waterproof membrane and improved bond 40mm

Extruded polypropylene biaxial geogrids. Grid Size: 38mm MacGrid® EG MacGrid® EG controls deformation and rutting, enabling the thickness of granular layers to be reduced. Strength: 15 -

Woven polyester geogrids with polymer coating. MacGrid® WG ® Grid Size: 20 - MacGrid WG S provides cost effective, long term control of deformation and 35mm rutting with soft subgrades or high axle loads.

® Woven polypropylene (W1) and polyester geotextiles (W2) provide Strength: (W1): 20 - MacTex W1/W2 separation and reinforcement for construction on soft ground. 110kN/m Unbound layers

® ® Non-woven needle-punched polyester geotextiles. MacTex N/H Strength: 6 - MacTex N / H are used to separate granular materials preventing interlayer

Drain core and textile ® Drainage geocomposites with a polymeric drainage core and a MacDrain non-woven geotextile filter on one or both sides to stop the core performance selected to suit application Drainage

Solution Problem Asphalt Unbound Road

Reflective cracking +++ +++ Fatigue cracking +++ ++ Thermal Cracking +++ + Rutting & Shoving +++ + Road widening +++ + Haunching Failure +++ ++ Differential Settlement +++ + +++ +++ ++ + Overlay of concrete +++ + pavements ++ ++ ++ +++ + ++o Reducing layer thickness ++ +++ + +o Bearing capacity failure ++ ++ ++ ++o Wet / saturated ground +++ + ++ ++ High axle loads o = in conjunction with other reinforcement

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MAC2015 Pavement Canada.indd 7 4/30/2015 1:23:50 PM Research and Development

Maccaferri’s pavement products have been developed through an extensive program of Comparison international research. between various asphalt Smart Road, Virginia Tech, USA reinforcements Full scale instrumented field trials showed Road MeshTM produced a 72% decrease in strain and a fatigue life improvement of up to 120%.

Nottingham University, UK Beam bending tests showed Road MeshTM can reduce thermal cracking and extend the service life of asphalt overlays by three times. Wheel track tests showed Road MeshTM can halve the depth of rutting. Life extension with Road MeshTM ISMES, Italy

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MAC2015 Pavement Canada.indd 8 4/30/2015 1:23:50 PM Design and Installation

Maccaferri uses state of the art Maccaferri’s pavement products are design software, featuring various straightforward to install and recycle: design methodologies, to optimise Installation Recycling the reinforcement and the required Road MeshTM Can be laid on milled surfaces. Stretched, Mill down to 15 mm above the thickness of the pavement layers. rolled and secured with asphalt blinding or mesh. nails. Locate mesh, and pull out with As reinforced pavements require Requires a minimum of 70 mm asphalt hydraulic excavator. cover. Recycle as galvanised wire. less maintenance, whole life costs ® MacGrid AR / Can be trafficked during installation by site are lower: AR G vehicles. Mill out and recycle with asphalt.

- Reduced materials Secured to smooth asphalt surfaces with - Reduced vehicle movements bituminous bond coat or self-adhesive backing. - Reduced traffic congestion. MacGrid® EG / WG Cannot be trafficked during installation. MacTex®

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MAC2015 Pavement Canada.indd 9 4/30/2015 1:23:50 PM Project examples

Asphalt Pavements

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1. Road Mesh™ - State highway, 4. Road Mesh™ - City road, Surgut, Pennsylvania, USA Russia 2. Road Mesh™ - Interstate, Bratislava, 5. Road Mesh™ - Dual carriageway, Slovakia Indonesia ® ® 3. MacGrid AR - Major highway, Belgium 6. MacGrid AR - Major highway, India

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MAC2015 Pavement Canada.indd 10 4/30/2015 1:23:51 PM Unbound Pavements / Surfaces

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® 7. MacGrid WG - Subgrade reinforcement, Brazil ® 8. MacGrid WG - Subgrade reinforcement, Brazil ® 9. MacGrid EG - Subgrade reinforcement, USA ® 10. MacTex - Windfarm access road on soft ground, Canada

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MAC2015 Pavement Canada.indd 11 4/30/2015 1:23:51 PM MAC2015 Pavement Canada.indd 12 GLOBAL ENGINEERS Group Profile Officine Maccaferri c Our missionistopursueexcellencethrough worldwide. in over70countriesand30factories withoffices development ofadvancedsolutions, worldwide refer Founded in1879,ourGroupsoonbecamea for allstakeholdersaswellourcommunities. s friendly. Wearecommittedtooutstanding innovative, advancedandenvironmentally c friendly productsandapplications. increasing rangeofhighqualityandenvironmentally diversification ofsectorsactivityandthroughan worldwide networkgrowsthroughinnovationand Wearestillchangingtoday. engineering landscape. clients atevery We workeverydaytofindbetter Gabions and dramatically changedthecivil Gabions anddramatically In thesecondhalfof19thcentury,weinvented afety, quality and sustainability, tocreatevalue afety, qualityandsustainability, ustomers engineeredsolutionsthatare ontinuous improvement,whiledeliveringto © 2021MaccaferriProject:graficamonti.com-Photo:Officine Maccaferri

ence in the design and ence inthedesign degree oflatitudeandlongitude.Our info Phone (519)623-9990 Cambridge, OntarioN1R7H7 400 Collier MacMillan Drive,UnitB MacMillan 400 Collier Maccaferri CanadaLtd. www.maccaferri.c @ ca. maccaferri.com om solutions forour

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