Surfacings & Pavements
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Monitoring of Base Bitumen into Western Australia
Project Status: In ProgressBitumen is a residual product from the distillation of crude oil and is one of the most commonly used construction materials in the world. There are a wide range of crude sources with varying chemical…
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Cold In-Place Recycling for Asphalt Pavements in Western Australia
Project Status: In ProgressSimilar to the use of reclaimed asphalt pavement (RAP) which WARRIP has investigated previously, cold in-place recycling is a method of pavement construction used to rehabilitate aged asphalt pavements with minimal use of additional virgin…
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Implementation of Ground Penetrating Radar (GPR) in Western Australia
Project Status: In ProgressExcavating test pits and/or drill coring to confirm the material profile and layer thicknesses is an important step in pavement evaluation preceding detailed rehabilitation design. However, these investigation techniques are destructive to the pavement, expensive,…
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Communicating Benefits of Revised Thin Asphalt Design Method
Project Status: In ProgressStemming from previous WARRIP projects investigating fatigue design of granular pavements with thin asphalt surfacing and updating of Main Roads Engineering Road Note 9 Procedure for the Design of Road Pavements (2013), two different methods…
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Review of Moisture Impacts on Asphalt Pavement Performance
Project Status: In ProgressIn Western Australia, full-depth asphalt (FDA) pavements are provisioned primarily in metropolitan heavy traffic volume/load applications. Recent observations by Main Roads suggest these pavements may be subject to premature deterioration due to moisture ingress. While…
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Evaluate the Digestion Potential of Crumb Rubber in Road Grade Bitumen
Project Status: In ProgressEnd-of-life rubber from vehicle tyres and industrial functions has the potential to be recycled in crumb rubber modified (CRM) binder technology for road building applications, such as sprayed bituminous seals and asphalt wearing courses. The…
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Evaluate the Effectiveness and Cost Benefit of Preventative Maintenance Treatments
Project Status: In ProgressMaintaining Western Australia’s vast road network to provide a consistent level of service is a complex and costly exercise. Depending on several factors not limited to design, materials, construction, traffic and environment, pavements will consume…
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Impact of Large Stone Fractions on the California Bearing Ratio of Granular Pavement Materials
Project Status: In ProgressGranular materials used in the design and construction of pavement base and subbase layers are often assessed for suitability based on the California Bearing Ratio (CBR) value. This measure provides an indication of the load…
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Investigating the Use of Recycled Plastic in Future Sustainable Road Infrastructure
Project Status: In ProgressCurrent waste management challenges across the world have required governments to develop innovative policies that target the implementation of single-use materials throughout the economy. Sustainable materials and construction practices are the future of road infrastructure…
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Sustainability Assessment Tool for Innovative Pavements
Project Status: In ProgressMain Roads Western Australia has implemented the Infrastructure Sustainability Council (ISC) rating process for major projects, which requires the quantification of greenhouse gas (GHG) reductions and other sustainability impacts. The ISC sustainability ratings tool can…
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