Details:

Creators:
Bhattacharya, Biplab B. ; Von Quintus, Harold L. ; Darter, Michael I.
Bhattacharya, Biplab B. ; Von Quintus, Harold L. ; Darter, Michael I. Less -
Corporate Creators:
Applied Research Associates, Inc.
Corporate Contributors:
United States. Federal Highway Administration
Subject/TRT Terms:
[+]
Calibration Fatigue Cracking Field Tests Flexible Pavements Implementation Mechanistic-empirical Pavement Design Pavement Performance Rigid Pavements Rutting Test Sections Transfer Functions
Publication/ Report Number:
FHWA 16/02F
Resource Type:
Tech Report
Geographical Coverage:
Wyoming
Corporate Publisher:
Wyoming. Dept. of Transportation
Abstract:
The Wyoming Department of Transportation (WYDOT) currently uses the empirical AASHTO Design for Design of

Pavement Structures as their standard pavement design procedure. WYDOT plans to transition to the Mechanistic

Empirical Pavement Design Guide (MEPDG) for designing new and rehabilitated highway pavements. As a part of the

transitioning process, WYDOT has sponsored an implementation project. One part of the implementation project is to

verify the MEPDG global distress transfer functions and calibrate these functions to local conditions, if determined to

be necessary. The Wyoming Long-Term Pavement Performance (LTPP) and non-LTPP roadway segments, as well as

LTPP test section is adjacent states were used for this verification-calibration process.

As noted above, one objective of the implementation project was to verify or confirm that the MEPDG transfer

functions and global calibration coefficients derived from NCHRP project 1-40D reasonably predict distresses and

smoothness in Wyoming. One of the tasks within this project focused on using the Wyoming LTPP test sections to

confirm the applicability of the global calibration coefficients. Results from the initial verification concluded some of

the transfer functions exhibited significant bias between the measured and predicted distress and require local

calibration. Thus, some of the LTPP test sections in adjacent states with similar design features built in Wyoming

combined with some non-LTPP roadway segments in Wyoming were used to determine the coefficients of the transfer

functions to eliminate any bias between the measured and predicted distresses.

This report documents the local calibration of the transfer functions using LTPP and non-LTPP roadway segments. The

calibration process follows the steps presented in the 2010 AASHTO MEPDG Local Calibration Guide. Local

calibration coefficients were derived to remove that bias for the rutting, fatigue cracking, and thermal cracking transfer

functions of flexible pavements, and the faulting and fatigue cracking transfer functions of rigid pavements. The global

coefficients of the smoothness degradation regression equation for flexible and rigid pavements were also checked for

their applicability to Wyoming conditions.


Format:
PDF
Funding:
RS03209
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:154dc252c7d301a8f47f08ef09885731ef7726704ae0bdc8e038bca670bdd3ca
Download URL:
https://rosap.ntl.bts.gov/view/dot/29562/dot_29562_DS1.pdf
File Type:

Supporting Files

• No Additional Files

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