Evaluation of subgrade resilient modulus predictive model for use in mechanistic-empirical pavement design guide

Lev Khazanovich, Clara Celauro, Bruce Chadbourn, John Zollars, Shongtao Dai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations

Abstract

The characterization of unbound materials in the mechanistic-empirical pavement design guide (MEPDG), also known as the 2002 design guide, is reviewed, and this characterization is applied to Minnesota subgrades. The main emphasis is on the collection k1-, k2-, and k3- parameters for Minnesota fine-grained soils and the procedure for the interpretation of the resilient modulus test to provide an input to the multilayer elastic theory (MLET) analysis (Level 2 input). This is an important aspect of adaptation of the MEPDG, because the guide recommends measurement of resilient moduli from laboratory testing, but the procedure does not specify how to interpret the test data to obtain an input for an MLET analysis. The resilient modulus test results from 23 samples collected from several Minnesota locations were used to provide information for the nonlinear finite element program and multilayer elastic theory program. The obtained elastic moduli were compared with the MEPDG recommended ranges for subgrade modulus of elasticity based on the soil classification (Level 3 inputs). The MEPDG Level 3 ranges were found to be reasonable.

Original languageEnglish (US)
Title of host publicationRigid and Flexible Pavement Design 2006
PublisherNational Research Council
Pages155-166
Number of pages12
Edition1947
ISBN (Print)0309099552, 9780309099554
DOIs
StatePublished - Jan 1 2006

Publication series

NameTransportation Research Record
Number1947
ISSN (Print)0361-1981

Fingerprint

Dive into the research topics of 'Evaluation of subgrade resilient modulus predictive model for use in mechanistic-empirical pavement design guide'. Together they form a unique fingerprint.

Cite this