green up design alternative comparison system for pavements

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Presentation of a software application currently under development that will allow engineers to quickly compare and evaluate pavement design and rehabilitation alternatives in terms of sustainability.

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  • 1. 12th ISAP Conference on Asphalt Pavements Dragos Andrei, Ph.D., P.E. Green Up

2. WHAT IS GREEN UP? A software application that will produce a color-coded graphic to illustrate the sustainable and non-sustainable aspects of pavement rehabilitation strategies. An educational tool that will help users learn more about sustainable pavement materials and practices. By design, Green Up was meant to be quick, simple and effective. The target audience includes primarily those in charge of making or approving pavement rehabilitation recommendations. 3. WHY COLORS? Pavement materials and practices involve a mix of sustainable and non- sustainable aspects. Colors are an easy way to convey a wealth of information relatively fast better than a numerical index. Red = Least Sustainable Green = Most Sustainable 4. LEGEND Materials Recycling Carbon Footprint Permeability Heat Island Effect Noise Life/Cost 5. 1: MATERIALS RECYCLED IN PLACERECYCLED IMPORT RECYCLABLE EXPORT WASTE VIRGIN MATERIAL S 6. MATERIALS THICKNESS RECYCLED IMPORT RECYCLABLE EXPORT RECYCLED IN-PLACE VIRGIN WASTE 7. COLAS 2003 GHG STUDY SOURCE: THE ENVIRONMENTAL ROAD OF THE FUTURE, COLAS 2003 8. COLAS 2003 STUDY - GHG LEVELS ACTIVITY HIGH MODERATE LOW LAYDOWN Hot Recycling ~ 30 kg/t - All others < 1 kg/t TRANSPORT All others 3-7 kg/t - In-Place Recycling and Stabilization < 1 kg/t MANUFACTU RE + BINDERS Portland Cement Concrete 120-190 kg/t Hot/Warm Mix Asphalt, Treated Base 30-40 kg/t In-Place Recycling, Stabilization, Granular Base < 20 kg/t AGGREGATE S All others 5-10 kg/t - In-Place Recycling and Stabilization < 1 kg/t TOTALS Portland Cement Concrete 130-200 kg/t Hot/Warm Mix Asphalt, Treated Base 35-55 kg/t In-Place Recycling, Stabilization, Granular Base 10-35 kg/t 9. 2: TECHNOLOGY CATEGORIES CATEGORY TYPICAL MATERIALS EXTREME Portland Cement Concrete (PCC) HOT Hot Mix Asphalt (HMA), Hot In Place Recycled Asphalt (HIR), Treated Base (ATB, CTB) WARM Warm Mix Asphalt (WMA) COLD Cold Recycled Asphalt (CIR, CCPR), Full Depth Reclamation (FDR), Cold Planing (CP), Granular Base 10. TECHNOLOGY THICKNESS WARM HOT COLD EXTREME 11. 3: SURFACE PROPERTIES SURFACE REFLECTIVITY NOISEPERMEABILIT Y 12. SURFACE PROPERTIES OPTIONS 13. 4: LIFE/COST 14. LIFE/COST INPUT PARAMETERS 15. LIFE/COST CATEGORIES Design Life: Temporary < 20 years Normal > 20 years Long Life > 50 years Perpetual > 75 years High Cost Very Poor Poor Fair Saver Moderate Cost Poor Fair Saver Super Saver Low Cost Fair Saver Super Saver Excellent 16. USE: COMPARE REHAB ALTERNATIVES Mill and Fill 3in Mill 1.5 in, CIR 3 in and Overlay 1.5 in 17. USER INTERFACE Link to website with more info on CIR 18. STATUS AND PLANS Greenup 1.0 for Windows available for evaluation purposes only at PRRCenter.org/Greenup More research needed to set the carbon footprint thresholds. Add user costs to Life/Cycle input screen. Address any bugs and add better reporting capability. In the near future, make Greenup available as a web app/mobile app. Contractors could use it in the bidding process. Consultants could use it to include sustainability considerations in their design/rehabilitation recommendations. Public agencies could require its use to ensure that consultants considered several design alternatives and that sustainability is included. As materials and technologies green up, the application should be periodically update to reflect significant improvements. 19. ULTIMATE GOAL Provide practitioners with simple, convenient tool to evaluate sustainability aspects of pavement design/rehabilitation strategies. Green Up does not replace sustainability rating systems such as LEED for Neighborhoods, Greenroads, LEED, Invest. Educate users about sustainable pavement materials and practices by providing links to web sites with pertinent information. Promote sustainable pavement materials and practices. 20. THANK YOU Dragos Andrei California State Polytechnic University dandrei@csupomona.edu 909.869.2487 PRRCenter.org

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