An Empirical Equation for Predicting Pavement Deflections

Details

• Creators:
  Scrivner, F. H. ; Moore, William M.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration. Bureau of Public Roads
• Subject/TRT Terms:
  • Deflectometers
  • Deflection
  • Equations
  • Forecasting
  • Mathematical models
  • Pavement design
  • Pavements
  • Stiffness
• Publication/ Report Number:
  32-12
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  This report is intended to document the empirical equation for predicting pavement deflections given in Section 3.2 of Research Report 32-11, "A Systems Approach to the Flexible Pavement Design Problem"(l)• The equation predicts deflections measured by the Dynaflect*, given certain design parameters for the pavement. The equation was derived in two basic steps: (1) a mathematical model of the deflection phenomenon, containing certain undetermined coefficients, was developed, and (2) the coefficients were evaluated by fitting the model to Dynaflect deflection data gathered on a set of special test sections constructed in accordance with statistical principles of experiment design. This report presents the model, describes how the coefficients were evaluated, discusses the prediction errors associated with the equation, and shows how the model can be used to estimate stiffness coefficients in simple pavement structures.
• Format:
  PDF
• Funding:
  2-8-62-32
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84051/dot_84051_DS1.pdf
• File Type:
  [PDF - 934.46 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:48ec4b7467b7f03d5771a6ef47e55b68744fb67d0648507cc60f1187d608d432f172f0a2cf43e6a0de095f79e7a51d857fd17363b93c4a0e48895b55c3ea53fd