Optimized Hot-Mix Asphalt Lift Configuration for Performance

Al-Qadi, Imad L; Ramakrishnan, Aravind; Zhu, Zehui; Said, Izak M.; Renshaw, Greg; Ozer, Hasan; Salim, Ramadan; Illinois Center for Transportation; University of Illinois at Urbana-Champaign; Arizona State University

doi:10.36501/0197-9191/23-006

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Optimized Hot-Mix Asphalt Lift Configuration for Performance

2023-05-01
By Al-Qadi, Imad L ; Ramakrishnan, Aravind ; Zhu, Zehui ; ...

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Details:

Creators:

Al-Qadi, Imad L ; Ramakrishnan, Aravind ; Zhu, Zehui ; Said, Izak M. ; Renshaw, Greg ; ... More +

Al-Qadi, Imad L ; Ramakrishnan, Aravind ; Zhu, Zehui ; Said, Izak M. ; Renshaw, Greg ; Ozer, Hasan ; Salim, Ramadan Less -
Corporate Creators:

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign ; Arizona State University

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign ; Arizona State University Less -
Corporate Contributors:

Illinois Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration

Illinois Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Asphalt Concrete Pavements Finite Element Method Hot Mix Asphalt Large-Scale Testing Life Cycle Costing Mix Design Optimization Overlays (Pavements) Pavement Performance Performance Based Specifications Reflective Cracking Thickness
Publication/ Report Number:

FHWA-ICT-23-005 ; ICT-23-006 UILU-2023-2006

FHWA-ICT-23-005 ; ICT-23-006 UILU-2023-2006 Less -
DOI:

https://doi.org/10.36501/0197-9191/23-006
Resource Type:

Tech Report
Geographical Coverage:

Illinois ; United States

Illinois ; United States Less -
Edition:

Final Report 8/16/19–5/31/23
Corporate Publisher:

Illinois Center for Transportation
Abstract:

Researchers conducted eight large-scale laboratory tests to assess the combined impact of hot-mix asphalt (HMA) overlay mix and thickness on its performance to control reflective cracking. Bonding efficiency, flexibility, and stiffness of the HMA mix as well as overlay thickness significantly affect an overlay’s performance against reflective cracking. Researchers developed a generalized 3D finite-element model to predict an overlay’s reflective cracking potential and generated a database of 128 cases. They also developed a data-driven surrogate model to predict reflective cracking potential that engineers can easily use. Life-cycle cost analysis of overlay alternatives was performed using Illinois Department of Transportation’s unit prices from contracts between 2018 and 2019. The researchers identified optimal overlay configurations to control reflective cracking. An overlay composed of a 1.5 in (38.1 mm) SMA-9.5 or 1.25 in (31.8 mm) IL-9.5FG surface course and a 0.75 in (19.1 mm) IL-4.75 binder course had the lowest annual cost per mile among non-interstate projects. For interstate projects, an overlay composed of a 2 in (50.8 mm) SMA-12.5 surface course and a 2.25 in (57.2 mm) IL-19.0 binder course was the most cost-effective. The study concluded that to control reflective cracking and to reduce life-cycle cost, an overlay composed of an SMA-9.5 surface course and an IL-4.75 binder course is recommended for non-interstate projects. An IL-9.5FG surface course and an IL-4.75 binder course are suggested for low-volume and low-speed roads. For interstate projects, an overlay comprised of an SMA-12.5 surface course and an IL-19.0 binder course is recommended. A data-driven surrogate model may be used to design overlay thicknesses.
Format:

PDF
Funding:

R27-204
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:2c8fb13fdbf16857d16ee3d29aee75e97b169cbf3d9bddea549755fd95ee13f8
Download URL:

https://rosap.ntl.bts.gov/view/dot/67374/dot_67374_DS1.pdf
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Optimized Hot-Mix Asphalt Lift Configuration for Performance

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