Pavement

This report provides input to the Austroads project Performance of Warm Mix Asphalt Pavements. It involves a literature review of existing CO2-e emission calculators applicable to road construction (using asphalt products) with a view to recommending a system for inclusion into the Austroads warm mix asphalt evaluation protocol. This assists in facilitating a more consistent approach to calculating carbon footprints by the asphalt industry. It was concluded that, in the absence of sufficient Australian-based emissions factors, it was premature to recommend a carbon calculation system for inclusion in the Austroads Warm Mix Asphalt Evaluation Protocol. However, the recent work of the Transport Authorities Greenhouse Group (TAGG) in coordinating the development of a greenhouse workbook and calculator, and the recommendation that it be adopted as a national standard, means that any further work would need to be in line with this recommendation, i.e. there would be little point in evaluating the calculators reviewed to date using local data.