Design
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Management of Perth’s Smart Freeways Long Lever Cantilever Sign Structures
Project Status: In ProgressAs part of Perth’s new Smart Freeways project, long-lever (between 16-22 m) cantilever sign structures were constructed and installed in along the northbound carriageway of the Kwinana Freeway. Due to limited stock of steel circular…
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The 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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Intelligent Compaction Control (ICC) – Field Trial Methodology and Trials
Project Status: In ProgressUniformity of placed roadwork material is one of the key elements for good performing roads. In recent years, Intelligent Compaction Control (ICC) technology has been increasingly used to assist contractors to improve construction quality. This…
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Transfer of Crumb Rubber Modified (CRM) Bitumen Technology to Western Australia
Project Status: In ProgressThe responsible and sustainable practice of recycling tyres for use in road construction, has been in place for over 30 years in WA. WARRIP sought to apply the latest research to see if there was…
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High Modulus Asphalt (EME2)
Project Status: CompletedIn the world of road network construction, finding materials that are robust enough to cope with larger volumes of traffic and heavier vehicles is vital. Our roads need to perform for many years without cracking,…
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Review of Innovative Pavement Technologies
Project Status: CompletedIn the quest for innovative practices that might be applied in WA, three exciting research areas were explored for potential larger scale investigations. Solar pavements, although highly suitable for our sunny WA and with promising…
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Cost Effective Pavement Thickness Design
Project Status: CompletedAs part of Main Roads efforts for continuous improvement, internal and external engagement with industry professionals reviewed the current Main Roads WA supplement to the Austroads Guide to Pavement Technology. In response to issues raised,…
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Ground Instrumentation for Traffic Speed Deflectometer (TSD)
Project Status: CompletedTo fully understand the information produced by the TSD, two sites have been established with embedded sensor arrays. These sensors measure the true motion of the pavement surface when heavy vehicles travel over the test…
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Asphalt Fatigue at Elevated Temperatures
Project Status: CompletedFull depth asphalt pavements are designed to have little flexibility and can suffer from fatigue damage. The main factors contributing to fatigue damage are design parameters, climate (temperature), and traffic speed. Balancing these factors and…
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