Study of the Mechanical Properties of Iowa Concrete Pavement for Use in the Mechanistic-Empirical Pavement Design Guide (MEPDG)

The present research was designed to study the mechanical properties of typical portland cement concrete (PCC) used in Iowa pavements. These properties are required as input values by the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG). In this research, over 20,000 data were collected, compiled, and statistically analyzed. The typical input values of Iowa pavement concrete, such as 28-day compressive strength (f’ c), elastic modulus (Ec), modulus of rupture (MOR), and splitting tensile strength (f’ sp), were obtained and compared with the MEPDG default values. The relationships among Iowa concrete material properties were established through nonlinear regression analyses. The results of the study indicated that Iowa has a good documentation on the compressive strength of pavement concrete produced during the last few decades, but there were severe shortage of complete sets of concrete test data on the properties that are required by the current MEPDG. As a result, appropriately documenting complete sets of concrete properties, including MOR, Ec, and information on concrete mix design, is essential for updating the typical material input values and providing rational prediction equations for concrete pavement design in future.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 169-175
  • Monograph Title: Paving Materials and Pavement Analysis

Subject/Index Terms

Filing Info

  • Accession Number: 01207044
  • Record Type: Publication
  • ISBN: 9780784411049
  • Files: TRIS
  • Created Date: Oct 7 2010 2:18PM