A multi-scale approach for near-surface pavement cracking and failure mechanisms

Ozer, Hasan; Duarte, Carlos A.; Al-Qadi, Imad L.; NEXTRANS Center (U.S.); University Transportation Centers Program (U.S.); University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering

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A multi-scale approach for near-surface pavement cracking and failure mechanisms

2010-10-31
By Ozer, Hasan ; Duarte, Carlos A. ; Al-Qadi, Imad L.

[PDF-1.38 MB]

English

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Details:

Creators:

Ozer, Hasan ; Duarte, Carlos A. ; Al-Qadi, Imad L.

Ozer, Hasan ; Duarte, Carlos A. ; Al-Qadi, Imad L. Less -
Corporate Creators:

NEXTRANS Center (U.S.) ; University Transportation Centers Program (U.S.) ; University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering

NEXTRANS Center (U.S.) ; University Transportation Centers Program (U.S.) ; University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering Less -
Subject/TRT Terms:

[+]

Flexible Pavements Live Loads Pavement Cracking Rolling Contact Stresses
Publication/ Report Number:

USDOT-PU-4108-21574
Resource Type:

Tech Report
Geographical Coverage:

Illinois
OCLC Number:

711780289
Edition:

Final report
Corporate Publisher:

NEXTRANS Center (U.S.)
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance;NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION;NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;
Abstract:

Near‐surface cracking is one of the predominant distress types in flexible pavements. The occurrence of

near‐surface cracking, also sometimes referred to as top‐down cracking, has increased in recent years

with the increased construction of relatively thick flexible pavements. However, understanding the

mechanisms of near‐surface cracking and its integration into pavement design protocols remains a

challenge. A mechanistic‐empirical approach requires a thorough understanding of the mechanisms of

cracking on the surface or in the proximity of tires as well as an experimental characterization simulating

field failure conditions. The analysis of this problem can become a very complex task due to multi‐axial

stress states in the vicinity of tires. This study investigated the near‐surface response to non‐uniform tire

contact stresses and analyzed the potential for occurrence of cracks near the surface in a typical

relatively thick flexible pavement structure. The Generalized Finite Element Method (GFEM) was

utilized to analyze the pavement structures in three‐dimensions (3‐D) considering the viscoelastic

effects. This method provided a computational framework where arbitrary orientation of cracks in a

finite element mesh is possible. The use of the GFEM in this problem was particularly intended for

resolving the mixed mode fracture conditions which may emanate from the complex stress states in the

vicinity of tires.
Format:

PDF
Funding:

DTRT07-G-005
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:e234ca8999bbc77ab63efb77cf19eb32de60718658e264e7ebcb25c6a4e39f71
Download URL:

https://rosap.ntl.bts.gov/view/dot/18642/dot_18642_DS1.pdf
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A multi-scale approach for near-surface pavement cracking and failure mechanisms

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