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The National Academies

NCHRP Synthesis 20-05/Topic 38-09 [Final (Synthesis)]

Estimating Stiffness of Subgrades and Unbound Materials for Pavement Design
[ NCHRP 20-05 (Synthesis of Information Related to Highway Practices) ]

  Project Data
Funds: 30000
Staff Responsibility: Jon M. Williams
Effective Date: 11/1/2006
Completion Date: 2/1/2006
Fiscal Year: 2006

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 382: Estimating Stiffness of Subgrade and Unbound Materials for Pavement Design explores the significance of the resilient modulus property, various methods of determining this property of subsoils and unbound bases, and the application of this parameter in the mechanistic-empirical pavement design guide.  Report located at http://www.trb.org/news/blurb_detail.asp?id=9866.

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