Implementation of Texas asphalt concrete overlay design system.

Hu, Sheng; Zhou, Fujie; Scullion, Tom; Texas A&M Transportation Institute

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

i

Implementation of Texas asphalt concrete overlay design system.

2014-08-01
By Hu, Sheng ; Zhou, Fujie ; Scullion, Tom

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English

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Details:

Creators:

Hu, Sheng ; Zhou, Fujie ; Scullion, Tom

Hu, Sheng ; Zhou, Fujie ; Scullion, Tom Less -
Corporate Creators:

Texas A&M Transportation Institute
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Asphalt Concrete Pavements Field Studies Implementation Laboratory Tests Mix Design Overlays (Pavements) Pavement Cracking Rutting
Publication/ Report Number:

FHWA/TX-13/5-5123-03-1
Resource Type:

Tech Report
Geographical Coverage:

Texas
Corporate Publisher:

Texas. Dept. of Transportation. Research and Technology Implementation Office
Abstract:

An asphalt overlay design system was developed for Texas Department of Transportation (TxDOT) under

Research Project 0-5123. The new overlay design system, named the Texas Asphalt Concrete Overlay

Design System (TxACOL), can help pavement engineers optimize asphalt overlay design in terms of

overlay mix type and thickness, based upon existing pavement structure and conditions (existing distress

types and/or load transfer efficiency at joints/cracks), local weather conditions, and anticipated traffic

level.

Several districts in Texas expressed interest in implementing this new overlay design system for designing

asphalt overlays. To facilitate the implementation in districts, Project 5-5123-03 was initiated. The work

performed under this study included (a) developing and conducting district-oriented overlay design

workshops, (b) providing asphalt overlay design assistance and monitoring the new constructed overlays,

(c) performing laboratory testing and updating the material default values of overlay mixes, (d) surveying

the field performance (rutting and cracking) of asphalt overlay projects, and (e) enhancing and calibrating

the TxACOL.

This report documents the work and findings from this study. Case analyses showed that the enhanced

TxACOL can make reasonable predictions compared to survey results. The researchers recommend that

TxACOL be used as a tool for asphalt overlay design in TxDOT districts. Apparently, calibration factors

still need to be further verified through more field test sections.
Format:

PDF
Funding:

Project 5-5123-03
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a3e71f0a468777c33cef4230b95d970ab91fdea1a5535beab5a0b139715367ea
Download URL:

https://rosap.ntl.bts.gov/view/dot/28007/dot_28007_DS1.pdf
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Implementation of Texas asphalt concrete overlay design system.

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