The production of sustainable asphalt mixtures is a challenge for the asphalt industry as a whole. However, new technologies such as Warm-Mix Asphalt (WMA) appear to produce more environmental friendly asphalt mixtures, helping meet this challenge of sustainability. There are still many obstacles in developing this technology, though, such as making the required modifications to asphalt mixing plants, cost of mix production and the long-term performance of WMA. Currently, WMA is produced and evaluated using the same mixture design and performance tests as Hot-Mix Asphalt (HMA), but it seems that the current mixture design methods should be improved by evaluating the Environmental Polluting Potentials (EPPs) of materials in the asphalt mixture. In this paper, the effects of aggregate sources were studied as regards the parameters proposed as indicators for EPPs of materials as correlates to the production of HMA in Canada, as a case study. The results clearly indicated that Cleaner HotMix Asphalt (CHMA) can be produced irrespective of asphalt binder, aggregate and industrial fuel types in the mixing plants. The results also showed that the total amount of saved fuel, based on the EPP of materials, is equivalent to the amount required energy to energize anywhere from4000 to 14503 Canadian households per annum, indicating a significant amount of energy saving without any modification to the asphalt mixing plants.
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