TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 285: Laboratory Determination of Resilient Modulus for Flexible Pavement Design describes test methods for measurement of the resilient modulus of hot-mix asphalt (HMA) and for measurement of the resilient modulus of unbound granular base and sub-base materials and sub-grade soils.
National Academies of Sciences, Engineering, and Medicine. 2004. Laboratory Determination of Resilient Modulus for Flexible Pavement Design. Washington, DC: The National Academies Press. https://doi.org/10.17226/21960.
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