Development of improved overlay thickness design alternatives for local roads.

Tutumluer, Erol; Sarker, Priyanka; Illinois Center for Transportation

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Development of improved overlay thickness design alternatives for local roads.

2015-07-01
By Tutumluer, Erol ; Sarker, Priyanka

[PDF-4.79 MB]

English

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Details:

Creators:

Tutumluer, Erol ; Sarker, Priyanka

Tutumluer, Erol ; Sarker, Priyanka Less -
Corporate Creators:

Illinois Center for Transportation
Corporate Contributors:

United States. Federal Highway Administration ; Illinois. Dept. of Transportation. Bureau of Materials and Physical Research

United States. Federal Highway Administration ; Illinois. Dept. of Transportation. Bureau of Materials and Physical Research Less -
Subject/TRT Terms:

[+]

Falling Weight Deflectometers Hot Mix Paving Mixtures Low Volume Roads Mechanistic-empirical Pavement Design Nondestructive Tests Overlays (Pavements) Structural Analysis Thickness
Publication/ Report Number:

FHWA-ICT-15-008 ; UILU-ENG-2015-2009

FHWA-ICT-15-008 ; UILU-ENG-2015-2009 Less -
Resource Type:

Tech Report
Geographical Coverage:

Illinois
Corporate Publisher:

Illinois Center for Transportation
Abstract:

In this research study, 20 pavement sections were selected from six counties in Illinois, with varying

structural and traffic characteristics. Falling weight deflectometer (FWD) tests were conducted on these

road segments to determine and monitor the structural conditions of both the existing and HMA overlaid

pavement sections. Then the corresponding required overlay thicknesses were determined using three

different methods—the AASHTO 1993 nondestructive testing (NDT) method, the IDOT modified layer

coefficients method, and the Asphalt Institute deflection approach—that are currently used by local

agencies including municipalities, counties and townships. Inadequacies of the currently available

methods to properly account for the pavement structural conditions were highlighted. Accordingly, a new

mechanistic-empirical (M-E) overlay design method was developed to adequately assess the structural

conditions of existing pavements and subsequently recommend required thickness values from FWD-based critical pavement responses computed and compared with threshold values for the pre-established fatigue and/or rutting damage algorithms. The M-E overlay design method successfully

identified structural deficiencies in the original pavement configurations through FWD NDT and

subsequently resulted in reliable and cost-effective overlay solutions, as compared with the IDOT

modified layer coefficients method.
Format:

PDF
Funding:

R27-130
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:f344bffc59526a6ed474e4c237a328a5913e355cd6600154c0ad529e216f8220
Download URL:

https://rosap.ntl.bts.gov/view/dot/29381/dot_29381_DS1.pdf
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Development of improved overlay thickness design alternatives for local roads.

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