TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 113: Environmental Effects in Pavement Mix and Structural Design Systems examines limitations associated with provisional protocols on hardening potential of asphalt binders and mixes, and explores ways to enhance the predictive capabilities of these protocols. A summary of this effort was published as NCHRP Research Results Digest 324.
National Academies of Sciences, Engineering, and Medicine. 2007. Environmental Effects in Pavement Mix and Structural Design Systems. Washington, DC: The National Academies Press. https://doi.org/10.17226/23244.
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