Details:

Creators:
Al-Qadi, Imad L. ; Buttlar, William G. ; Baek, Jongeun
Al-Qadi, Imad L. ; Buttlar, William G. ; Baek, Jongeun Less -
Corporate Creators:
Illinois Center for Transportation
Corporate Contributors:
Illinois. Department of Transportation. Bureau of Materials and Physical Research
Subject/TRT Terms:
[+]
Hot Mix Asphalt Pavement Components Pavement Cracking Pavement Design Pavements
Publication/ Report Number:
FHWA-ICT-09-045 ; ICT-009-045, UILU-ENG-2009-2016
FHWA-ICT-09-045 ; ICT-009-045, UILU-ENG-2009-2016 Less -
Resource Type:
Tech Report
Geographical Coverage:
Illinois
Edition:
Project report, 2005-2008
Corporate Publisher:
Illinois Center for Transportation
Abstract:
In an effort to control reflective cracking in hot-mix asphalt (HMA) overlays placed over Portland Cement

Concrete (PCC) pavements, several reflective crack control (RCC) systems, including interlayer systems,

have been used. However, the cost-effectiveness of interlayer systems is still in doubt due their performance

and additional costs. In this project, a decision making procedure to aid in the selection of cost-effective

interlayer systems was developed. As a core step in evaluating the benefit-cost ratio (B/C) of interlayer

systems, a user-friendly life-cycle cost analysis (LCCA) program, CIND (Cost-effective INterlayer system

Decision program) was developed. Based on sensitivity analysis, a B/C prediction model was proposed, which

takes into account a performance benefit ratio (PBR) parameter, a material cost ratio (MCR), and a

construction time ratio (CTR). Using the B/C model, a table was developed which allows the user to

determine the most cost-effective interlayer system in a rehabilitation project for a given equivalent single-axle

load (ESAL) level, representative low temperature (TL), and existing concrete pavement joint spacing (JS).

Finally, a decision making tree was constructed to simplify the process of determining the most cost-effective

and compatible interlayer system for a given project. Depending on project significance and/or information

availability, pavement engineers can select from one of three newly developed B/C evaluation tools (in order

of sophistication): application tables, B/C prediction model, and the CIND computer program. Using these

tools, it was found that B/C increases as PBR increases or MCR and CTR decrease. In general, System D is

cost-effective in a wide range of ESALs and TL values; especially in a cold region with lower traffic volume.

The application range is reduced with the increase of JS, however. System E is relatively cost-effective only in

warm regions having higher traffic volume.


Format:
PDF
Funding:
ICT-R58
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:434af07c2db65749e21fc573d862c8b814154c0122359f838fe45119a993a277
Download URL:
https://rosap.ntl.bts.gov/view/dot/16721/dot_16721_DS1.pdf
File Type:

Supporting Files

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