TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Laboratory Subgrade Resilient Modulus Design Values for Michigan

Accession Number:

01124183

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The Michigan Department of Transportation (MDOT) currently uses several different procedures for estimating the resilient modulus (MR) of the roadbed soil. Therefore, MDOT sponsored a research study to develop a consistent and unified procedure to determine MR of the roadbed soil that meets the requirements of the various design-levels of the American Association of State and Highway Transportation Official (AASHTO) Mechanistic-Empirical Pavement Design Guide (M-E PDG). To do this, the State of Michigan was divided, by soil type, into 15 clusters and 99 areas. From most areas, disturbed and undisturbed roadbed soil samples were collected and Falling Weight Deflectometer (FWD) tests were conducted. The samples were then tested in the laboratory to determine their natural moisture contents, grain size distributions, Atterberg limits and MR using cyclic load triaxial tests. Statistical analysis were conducted and empirical correlations were developed relating the MR value for the different soil types to their moisture contents, grain size distributions, dry unit weights, and Atterberg limits. The resulting equations can be used for design levels I and II of the M-EPDG. These equations are presented and discussed in this paper. Results of the FWD tests and backcalculation of the MR values of the roadbed soils are presented elsewhere.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-1067

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Sessions, Colin P
Baladi, Gilbert Y
Dawson, Tyler A
Haider, Syed Waqar

Pagination:

21p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Maps; References (10) ; Tables (1)

Geographic Terms:

Michigan

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-1067

Files:

TRIS, TRB

Created Date:

Jan 30 2009 5:17PM