Pavement
Review of the Environmental Aspects of Warm Mix Asphalt
- Publication no: AP-T163-10
- ISBN: 978-1-921709-30-2
- Published: 7 July 2010
- PDF (free) Download
The use of warm mix asphalt (WMA) appears to be increasing throughout the developed world in place of conventional hot mix asphalt (HMA). Acceptance depends upon confirmation of the environmental benefits and that on-road performance is at least similar to that of HMA currently in use. This report examines the emissions during production of hot mix asphalt and number of warm mix asphalt technologies. The emissions quoted in this report did not take into account any upstream factors such as the manufacture and transport of additives. There was sufficient data to clearly demonstrate that WMA can reduce emissions during the manufacture of asphalt. The reduction in emissions quoted in the FHWA report (2008) would appear to be realistic.
- 1. INTRODUCTION
- 1.1. Background
- 1.2. Terminology and Concepts
- 1.2.1. Warm Mix Asphalt
- 1.2.2. Hot Mix Asphalt
- 1.2.3. Sustainable Development
- 1.2.4. Greenhouse Gas
- 1.2.5. Carbon Footprint
- 1.2.6. Carbon Dioxide Equivalency
- 2. LIFE CYCLE INVENTORY
- 3. EMISSIONS ASSOCIATED WITH ASPHALT PRODUCTION
- 3.1. Some Factors Affecting Emissions
- 3.2. Review of Various Products
- 3.2.1. Advera
- 3.2.2. Aspha-Min
- 3.2.3. Double Barrel Green Process
- 3.2.4. Evotherm
- 3.2.5. Sasobit
- 3.2.6. WAM Foam
- 4. CONCLUSIONS
- REFERENCES
- APPENDIX A ENERGY CONSUMPTION DURING HEATINGOF DAMP AGGREGATES
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