作者: Edward T. Harrigan
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摘要: INTROdu CTION Warm mix asphalt (WMA) has been gaining acceptance across the United States and Canada in recent years. A large number of state departments transportation (DOTs) have hosted WMA demonstrations to determine if should be allowed for state-funded paving projects. These shown that is constructible can reduce fuel usage emissions associated with hot (HMA) production. However, many these were conducted only one or two technologies. Now there are over 25 commercially available technologies States. Most states do not approve a technology use on state-maintained roads without welldocumented demonstration project. The suppliers part early projects often required organize their own gain approval standard evaluation program con